MIDCOAST ENERGY PARTNERS, L.P. 18,500,000 Class A Common Units Representing Limited Partner Interests UNDERWRITING AGREEMENT

Exhibit 1.1

Execution Version

MIDCOAST ENERGY PARTNERS, L.P.

18,500,000 Class A Common Units

Representing Limited Partner Interests

UNDERWRITING AGREEMENT

Dated: November 6, 2013

MIDCOAST ENERGY PARTNERS, L.P.

18,500,000 Class A Common Units Representing Limited Partner Interests

UNDERWRITING AGREEMENT

November 6, 2013

▇▇▇▇▇▇▇ Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇

Incorporated

Barlcays Capital Inc.

Citigroup Global Markets Inc.

as Representative(s) of the several Underwriters

c/o Merrill Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇

Incorporated

▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇

▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇

Ladies and Gentlemen:

Midcoast Energy Partners, L.P., a Delaware limited partnership (the “Partnership”), Midcoast Holdings, L.L.C., a Delaware limited liability company (the “General Partner”), Midcoast Operating, L.P., a Texas limited partnership (the “Operating Partnership”), Midcoast OLP GP, L.L.C., a Delaware limited liability company (the “OLP GP”), and Enbridge Energy Partners, L.P., a Delaware limited partnership (“EEP”), confirm their respective agreements with ▇▇▇▇▇▇▇ Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇ Incorporated (“▇▇▇▇▇▇▇ ▇▇▇▇▇”) and each of the other underwriters named in Schedule A hereto (collectively, the “Underwriters,” which term shall also include any underwriter substituted as hereinafter provided in Section 10 hereof), for whom ▇▇▇▇▇▇▇ ▇▇▇▇▇, Barclays Capital Inc. and Citigroup Global Markets Inc. are acting as representatives (in such capacity, the “Representatives”), with respect to (i) the sale by the Partnership and the purchase by the Underwriters, acting severally and not jointly, of the respective numbers of Class A common units representing limited partner interests in the Partnership (“Common Units”) set forth in Schedule A hereto and (ii) the grant by the Partnership to the Underwriters, acting severally and not jointly, of the option described in Section 2(b) hereof to purchase all or any part of 2,775,000 additional Common Units. The aforesaid 18,500,000 Common Units (the “Initial Securities”) to be purchased by the Underwriters and all or any part of the 2,775,000 Common Units subject to the option described in Section 2(b) hereof (the “Option Securities”) are herein called, collectively, the “Securities.”

Each of the Partnership, the General Partner, the Operating Partnership and the OLP GP is sometimes referred to herein as a “Partnership Party,” and they are sometimes collectively referred to herein as the “Partnership Parties.” Each of the Partnership Parties and EEP is sometimes referred to herein as an “Enbridge Party,” and they are sometimes collectively referred to herein as the “Enbridge Parties.” The Partnership, the General Partner and EEP are referred to herein as the “Enbridge Entities.”

The Partnership understands that the Underwriters propose to make a public offering of the Securities as soon as the Representatives deem advisable after this Agreement has been executed and delivered.

The Partnership and the Underwriters agree that up to 5% of the Initial Securities to be purchased by the Underwriters (the “Reserved Securities”) shall be reserved for sale by the Underwriters to certain persons designated by the Partnership (the “Invitees”), as part of the distribution of the Securities by the Underwriters, subject to the terms of this Agreement, the applicable rules, regulations and interpretations of the Financial Industry Regulatory Authority, Inc. (“FINRA”) and all other applicable laws, rules and regulations. The Partnership solely determined, without any direct or indirect participation by the Underwriters, the Invitees who will purchase the Reserved Securities (including the amount to be purchased by such persons) sold by the Underwriters. To the extent that such Reserved Securities are not orally confirmed for purchase by Invitees by 8:00 A.M. (New York City time) on the first business day after the date of this Agreement, such Reserved Securities may be offered to the public as part of the public offering contemplated hereby.

It is understood and agreed by all parties that prior to or at the Closing Time, the following transactions (the “Formation Transactions”) will occur:

(a) pursuant to a Contribution, Conveyance and Assumption Agreement substantially in the form filed as an exhibit to the Registration Statement (the “Contribution Agreement”), EEP will contribute a 38.999% interest in the Operating Partnership and a 100% interest in the OLP GP to the Partnership;

(b) the Partnership will issue to EEP 4,110,056 Common Units and 22,610,056 subordinated units representing limited partner interests in the Partnership (“Subordinated Units”) collectively representing an aggregate 58% limited partner interest in the Partnership;

(c) the Partnership will issue to the General Partner 922,859 general partner units representing a 2.0% general partner interest in the Partnership (the “GP Interest”) and all of the Partnership’s incentive distribution rights (the “IDRs”);

(d) the Partnership will issue the Initial Securities to the public representing a 40% limited partner interest in the Partnership, and the Partnership will use the proceeds as described under “Use of Proceeds” in the Registration Statement;

(e) the Partnership and the Operating Partnership will enter into a new credit agreement substantially in the form filed as an exhibit to the Registration Statement (the “New Credit Agreement”) providing for a $850.0 million revolving credit facility, and use the proceeds therefrom to fund an additional $323.4 million distribution to EEP;

(f) the Operating Partnership will enter into a new working capital loan agreement with EEP substantially in the form filed as an exhibit to the Registration Statement (the “Working Capital Agreement”) providing for a $250.0 million working capital credit facility;

(g) the Partnership and the Operating Partnership will enter into an intercorporate services agreement with EEP substantially in the form filed as an exhibit to the Registration Statement (the “Services Agreement”);

(h) the Operating Partnership will enter into a financial support agreement with EEP substantially in the form filed as an exhibit to the Registration Statement (the “Financial Support Agreement”);

(i) the Partnership will enter into an amended and restated insurance allocation agreement among EEP and certain of its affiliates substantially in the form filed as an exhibit to the Registration Statement (the “Allocation Agreement”);

(j) the Partnership, the General Partner, the Operating Partnership and the OLP GP will enter into an omnibus agreement with EEP and Enbridge Inc. substantially in the form filed as an exhibit to the Registration Statement (the “Omnibus Agreement”);

(j) EEP and the General Partner, in its individual capacity and in its capacity as the general partner of the Partnership, will approve, adopt, execute and deliver on behalf of itself and on behalf of each person who purchases a Common Unit an amended and restated agreement of limited partnership of the Partnership substantially in the form of Appendix A to the Prospectus (the “Partnership Agreement”);

(k) EEP will approve, adopt, execute and deliver an amended and restated limited liability company agreement of the General Partner (the “GP LLC Agreement”);

(l) the Partnership will approve, adopt, execute and deliver an amended and restated limited liability company agreement of the OLP GP (the “OLP GP LLC Agreement”); and

(m) the Partnership, EEP and the OLP GP will approve, adopt, execute and deliver an amended and restated limited partnership agreement of the Operating Partnership substantially in the form filed as an exhibit to the Registration Statement (the “Operating LP Agreement” and, together with the Contribution Agreement, the New Credit Agreement, the Working Capital Agreement, the Services Agreement, the Financial Support Agreement, the Omnibus Agreement and the Allocation Agreement, the “Transaction Documents”). The Transaction Documents, the Partnership Agreement, the GP LLC Agreement and the OLP GP LLC Agreement are referred to collectively herein as the “Operative Documents” and each, individually, as an “Operative Document.”

The Partnership has filed with the Securities and Exchange Commission (the “Commission”) a registration statement on Form S-1 (No. 333-189341), including the related preliminary prospectus or prospectuses, covering the registration of the sale of the Securities under the Securities Act of 1933, as amended (the “1933 Act”). Promptly after execution and delivery of this Agreement, the Partnership will prepare and file a prospectus in accordance with the provisions of Rule 430A (“Rule 430A”) of the rules and regulations of the Commission under the 1933 Act (the “1933 Act Regulations”) and Rule 424(b) (“Rule 424(b)”) of the 1933 Act Regulations. The information included in such prospectus that was omitted from such registration statement at the time it became effective but that is deemed to be part of such registration statement at the time it became effective pursuant to Rule 430A(b) is herein called the “Rule 430A Information.” Such registration statement, including the amendments thereto, the exhibits thereto and any schedules thereto, at the time it became effective, and including the Rule 430A Information, is herein called the “Registration Statement.” Any registration statement filed pursuant to Rule 462(b) of the 1933 Act Regulations is herein called the “Rule 462(b) Registration Statement” and, after such filing, the term “Registration Statement” shall include the Rule 462(b) Registration Statement. Each prospectus used prior to the effectiveness of the Registration Statement, and each prospectus that omitted the Rule 430A Information that was used after such effectiveness and prior to the execution and delivery of this Agreement is herein called a “preliminary prospectus.” The final prospectus, in the form first furnished to the Underwriters for use in connection with the offering of the Securities, is herein called the “Prospectus.” For purposes of this Agreement, all references to the Registration Statement, any preliminary prospectus, the Prospectus or any amendment or supplement to any of the foregoing shall be deemed to include the copy filed with the Commission pursuant to its Electronic Data Gathering, Analysis and Retrieval system or any successor system (“▇▇▇▇▇”).

As used in this Agreement:

“Applicable Time” means 7:00 p.m., New York City time, on November 6, 2013 or such other time as agreed by the Partnership and ▇▇▇▇▇▇▇ ▇▇▇▇▇.

“General Disclosure Package” means any Issuer General Use Free Writing Prospectuses issued at or prior to the Applicable Time, the most recent preliminary prospectus that is distributed to investors prior to the Applicable Time and the information included on Schedule B-1 hereto, all considered together.

“Issuer Free Writing Prospectus” means any “issuer free writing prospectus,” as defined in Rule 433 of the 1933 Act Regulations (“Rule 433”), including without limitation any “free writing prospectus” (as defined in Rule 405 of the 1933 Act Regulations (“Rule 405”)) relating to the Securities that is (i) required to be filed with the Commission by the Partnership, (ii) a “road show that is a written communication” within the meaning of Rule 433(d)(8)(i), whether or not required to be filed with the Commission, or (iii) exempt from filing with the Commission pursuant to Rule 433(d)(5)(i) because it contains a description of the Securities or of the offering that does not reflect the final terms, in each case in the form filed or required to be filed with the Commission or, if not required to be filed, in the form retained in the Partnership’s records pursuant to Rule 433(g).

“Issuer General Use Free Writing Prospectus” means any Issuer Free Writing Prospectus that is intended for general distribution to prospective investors (other than a “bona fide electronic road show,” as defined in Rule 433 (the “Bona Fide Electronic Road Show”)), as evidenced by its being specified in Schedule B-2 hereto.

“Issuer Limited Use Free Writing Prospectus” means any Issuer Free Writing Prospectus that is not an Issuer General Use Free Writing Prospectus.

SECTION 1. Representations and Warranties.

(a) Representations and Warranties by the Enbridge Entities. The Enbridge Entities, jointly and severally, represent and warrant to each Underwriter as of the date hereof, the Applicable Time, the Closing Time (as defined below) and any Date of Delivery (as defined below), and agree with each Underwriter, as follows:

(i) Registration Statement and Prospectuses. Each of the Registration Statement and any amendment thereto has become effective under the 1933 Act. No stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto has been issued under the 1933 Act, no order preventing or suspending the use of any preliminary prospectus, any Issuer Free Writing Prospectus or the Prospectus has been issued and no proceedings for any of those purposes have been instituted or are pending or, to the knowledge of the Enbridge Parties, threatened by the Commission. The Partnership has complied with each request (if any) from the Commission for additional information.

The Registration Statement and any post-effective amendment thereto, at the time it became effective, complied, and any amendment thereto filed after the date hereof will comply, in all material respects with the requirements of the 1933 Act and the 1933 Act Regulations. Each preliminary prospectus complied, and the Prospectus and any amendment or supplement thereto will comply, at the time each was filed or will be filed with the Commission, in all material respects with the requirements of the 1933 Act and the 1933 Act Regulations. Each

preliminary prospectus delivered to the Underwriters for use in connection with this offering and the Prospectus was or will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to ▇▇▇▇▇, except to the extent permitted by Regulation S-T.

(ii) Accurate Disclosure. Neither the Registration Statement nor any amendment thereto, at its effective time, at the Closing Time or at any Date of Delivery, contained, contains or will contain an untrue statement of a material fact or omitted, omits or will omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading. As of the Applicable Time, neither (A) the General Disclosure Package nor (B) any individual Issuer Limited Use Free Writing Prospectus, when considered together with the General Disclosure Package, included, includes or will include an untrue statement of a material fact or omitted, omits or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. Neither the Prospectus nor any amendment or supplement thereto, as of its issue date, at the time of any filing with the Commission pursuant to Rule 424(b), at the Closing Time or at any Date of Delivery, included, includes or will include an untrue statement of a material fact or omitted, omits or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

The representations and warranties in this subsection shall not apply to statements in or omissions from the Registration Statement (or any amendment thereto), the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) made in reliance upon and in conformity with written information furnished to the Partnership by any Underwriter through ▇▇▇▇▇▇▇ ▇▇▇▇▇ expressly for use therein. For purposes of this Agreement, the only information so furnished shall be the information in the first paragraph under the heading “Underwriting–Commissions and Discounts,” the information in the last paragraph under the heading “Underwriting–New York Stock Exchange Listing,” the information in the second, third and fourth paragraphs under the heading “Underwriting–Price Stabilization, Short Positions and Penalty Bids” and the information under the heading “Underwriting–Electronic Distribution” in each case contained in the Prospectus (collectively, the “Underwriter Information”).

(iii) Issuer Free Writing Prospectuses. No Issuer Free Writing Prospectus includes any information that conflicts or will conflict with the information contained in the Registration Statement or the Prospectus and any preliminary or other prospectus deemed to be a part thereof that has not been superseded or modified. The foregoing sentence does not apply to statements in or omissions from any Issuer Free Writing Prospectus based upon and in conformity with the Underwriter Information. The Partnership has made available a Bona Fide Electronic Road Show in compliance with Rule 433(d)(8)(ii) such that no filing of any “road show” (as defined in Rule 433(h)) is required in connection with the offering of the Securities.

(iv) Projections. Each of the statements made by the Partnership in the Registration Statement and the General Disclosure Package and to be made in the Prospectus (and any supplements thereto) within the coverage of Rule 175(b) under the 1933 Act, including (but not limited to) any statements with respect to projected results of operations, estimated available cash and distributable cash flow and future cash distributions of the Partnership, and any statements made in support thereof or related thereto under the heading “Cash Distribution Policy and Restrictions on Distributions,” or the anticipated ratio of taxable income to distributions, was made or will be made with a reasonable basis and in good faith.

(v) Partnership Not Ineligible Issuer. At the time of filing the Registration Statement and any post-effective amendment thereto, at the earliest time thereafter that the Partnership or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) of the 1933 Act Regulations) of the Securities and at the date hereof, the Partnership was not and is not an “ineligible issuer,” as defined in Rule 405, without taking account of any determination by the Commission pursuant to Rule 405 that it is not necessary that the Partnership be considered an ineligible issuer.

(vi) Independent Accountants. PricewaterhouseCoopers LLP, who certified the financial statements and supporting schedules of the Predecessor (as defined in the Registration Statement) and the Partnership and their respective consolidated subsidiaries included in the Registration Statement, the General Disclosure Package and the Prospectus (or any amendment or supplement thereto), are independent public accountants with respect to such entities as required by the 1933 Act, the 1933 Act Regulations and the Public Company Accounting Oversight Board.

(vii) Financial Statements; Non-GAAP Financial Measures. The financial statements included in the Registration Statement, the General Disclosure Package and the Prospectus, together with the related schedules and notes thereto, present fairly in all material respects the financial position of the Predecessor and the Partnership and their respective consolidated subsidiaries at the dates indicated and the results of operations, comprehensive income, cash flows and changes in partners’ capital of the Predecessor and its consolidated subsidiaries for the periods specified; said financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applied on a consistent basis throughout the periods involved. The supporting schedules, if any, present fairly in all material respects and in accordance with GAAP the information required to be stated therein. The selected financial data and the summary financial information included in the Registration Statement, the General Disclosure Package and the Prospectus present fairly in all material respects the information shown therein and have been compiled on a basis consistent with that of the audited financial statements and unaudited financial statements, as applicable, from which they were derived. The pro forma financial statements and the related notes thereto included in the Registration Statement, the General Disclosure Package and the Prospectus present fairly the information shown therein, have been prepared in accordance with the Commission’s rules and guidelines with respect to pro forma financial statements and have been properly compiled on the bases described therein, and the assumptions used in the preparation thereof are reasonable and the adjustments used therein are appropriate to give effect to the transactions and circumstances referred to therein. Except as included therein, no historical or pro forma financial statements or supporting schedules are required to be included in the Registration Statement, the General Disclosure Package or the Prospectus under the 1933 Act or the 1933 Act Regulations. The Partnership Parties do not have any material liabilities or obligations, direct or contingent (including any off-balance sheet obligations), not described in the Registration Statement (excluding the exhibits thereto), the General Disclosure Package and the Prospectus. All disclosures contained in the Registration Statement, the General Disclosure Package or the Prospectus regarding “non-GAAP financial measures” (as such term is defined by the rules and regulations of the Commission) comply with Regulation G of the Securities Exchange Act of 1934, as amended (the “1934 Act”), and Item 10 of Regulation S-K of the 1933 Act, to the extent applicable.

(viii) No Material Adverse Change in Business. Except as otherwise stated therein, since the date of the most recent financial statements included in the Registration Statement, the General Disclosure Package or the Prospectus, (A) there has been no material adverse change in the condition, financial or otherwise, or in the earnings, properties, operations or business prospects of the Partnership Parties and their subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business, or in the ability of the Enbridge Parties to

consummate the Formation Transactions, the transactions contemplated in this Agreement or the performance by the Enbridge Parties of their respective obligations hereunder (each such change, a “Material Adverse Effect”), (B) there have been no transactions entered into by any of the Partnership Parties or any of their respective subsidiaries, other than those in the ordinary course of business, which are material with respect to the Partnership Parties and their respective subsidiaries considered as one enterprise, (C) there has been no material change in the capitalization, short-term debt or long-term debt of the Partnership Parties and (D) there has been no distribution of any kind declared, paid or made by the Partnership on its Common Units.

(ix) Good Standing of the Enbridge Parties. Each Enbridge Party has been duly organized and is validly existing as a corporation, limited partnership or limited liability company, as applicable, in good standing under the laws of the State of Delaware or the State of Texas, as applicable, and has all corporate, limited partnership or limited liability company, as applicable, power and authority necessary to own, lease and operate its properties and to conduct its business as described in the Registration Statement, the General Disclosure Package and the Prospectus and to enter into and perform its obligations under this Agreement and the Transaction Documents to which it is a party; and each Partnership Party is duly qualified as a foreign corporation, limited partnership or limited liability company, as applicable, to transact business and is in good standing in each other jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not reasonably be expected to result in a Material Adverse Effect. The Partnership has all requisite partnership power and authority to issue, sell and deliver (A) the Securities, in accordance with and upon the terms and conditions set forth in this Agreement, the Partnership Agreement, the Registration Statement, the General Disclosure Package and the Prospectus and (B) the EEP Units and IDRs, in accordance with and upon the terms and conditions set forth in the Partnership Agreement and the Contribution Agreement.

(x) Good Standing of Subsidiaries. Each subsidiary of the Partnership (each, a “Subsidiary” and, collectively, the “Subsidiaries”) has been duly organized and is validly existing as a corporation, limited partnership or limited liability company, as applicable, in good standing under the laws of the jurisdiction of its incorporation or organization, has all corporate, limited partnership or limited liability company, as applicable, power and authority necessary to own, lease and operate its properties and to conduct its business as described in the Registration Statement, the General Disclosure Package and the Prospectus and is duly qualified as a foreign corporation, limited partnership or limited liability company, as applicable, to transact business and is in good standing in each other jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure to so qualify or to be in good standing would not result in a Material Adverse Effect. Except as otherwise disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, all of the issued and outstanding equity interests of each Subsidiary has been duly authorized and validly issued, is fully paid and non-assessable and is owned by the Partnership, directly or through subsidiaries, free and clear of any security interest, mortgage, pledge, lien, encumbrance, claim or equity (“Lien”). None of the outstanding equity interests of any Subsidiary were issued in violation of the preemptive or similar rights of any securityholder of such Subsidiary. For purposes of this Section 1(a)(x), the only subsidiaries of the Partnership are (A) the subsidiaries listed on Exhibit 21 to the Registration Statement and (B) certain other subsidiaries which, considered in the aggregate as a single subsidiary, do not constitute a “significant subsidiary” as defined in Rule 1-02 of Regulation S-X.

(xi) Ownership of the General Partner. EEP owns, and, as of Closing Time and any Date of Delivery, will own, 100% of the issued and outstanding membership interests in the General Partner. Such membership interests have been duly authorized and validly issued in accordance with the GP LLC Agreement and are fully paid (to the extent required by the GP LLC Agreement) and non-assessable (except as such non-assessability may be affected by Sections 18-303, 18-607 and 18-804 of the Delaware Limited Liability Company Act (the “Delaware LLC Act”)); and EEP owns such membership interests free and clear of all Liens (except Liens arising under the New Credit Agreement, restrictions on transferability in the GP LLC Agreement or as described in the Registration Statement, the General Disclosure Package and the Prospectus).

(xii) Ownership of the General Partner Interest in the Partnership. As of the Closing Time and any Date of Delivery, the General Partner will be the sole general partner of the Partnership and will own the GP Interest; such GP Interest will be duly authorized and validly issued in accordance with the Partnership Agreement, and the General Partner will own such GP Interest free and clear of all Liens (except restrictions on transferability contained in the Partnership Agreement or as described in the Registration Statement, the General Disclosure Package and the Prospectus).

(xiii) Power and Authority to Act as a General Partner. The General Partner has, and, as of the Closing Time and any Date of Delivery, will have, all requisite power and authority to act as the general partner of the Partnership, in all material respects as described in the Registration Statement, the General Disclosure Package and the Prospectus.

(xiv) Ownership of the EEP Units. Assuming no purchase by the Underwriters of any Option Securities, at the Closing Time and any Date of Delivery, after giving effect to the transactions (including the Formation Transactions) contemplated by this Agreement, EEP will own 4,110,056 Common Units and 22,610,056 Subordinated Units (collectively, the “EEP Units”). At the Closing Time, the EEP Units and the limited partner interests represented thereby will be duly authorized and validly issued in accordance with the Partnership Agreement, and will be fully paid (to the extent required under the Partnership Agreement) and non-assessable (except as such non-assessability may be affected by matters described in Sections 17-303, 17-607 and 17-804 of the Delaware Revised Uniform Limited Partnership Act (the “Delaware LP Act”)) and EEP will own the EEP Units free and clear of all Liens (except restrictions on transferability contained in the Partnership Agreement or as described in the Registration Statement, the General Disclosure Package and the Prospectus).

(xv) Ownership of IDRs. After giving effect to the Formation Transactions, at the Closing Time and any Date of Delivery, the General Partner will own all of the IDRs and such IDRs will have been duly authorized and validly issued in accordance with the Partnership Agreement, and will be fully paid (to the extent required under the Partnership Agreement) and non-assessable (except as such non-assessability may be affected by matters described in Sections 17-303, 17-607 and 17-804 of the Delaware LP Act); and the General Partner will own the IDRs free and clear of all Liens (except restrictions on transferability contained in the Partnership Agreement or as described in the Registration Statement, the General Disclosure Package and the Prospectus).

(xvi) Ownership of the Operating Partnership. After giving effect to the Formation Transactions, at the Closing Time and any Date of Delivery, the Partnership will own a 38.999% limited partner interest, EEP will own a 61%, limited partner interest and the OLP GP will own a 0.001% general partner interest in the Operating Partnership; such partnership interests have been duly authorized and validly issued in accordance with the Operating LP Agreement, and are fully

paid (to the extent required by the Operating LP Agreement) and non-assessable (except as such non-assessability may be affected by Sections 153.102, 153.103 and 153.112 of the Texas Business Organizations Code); and the Partnership, EEP or OLP GP, as applicable, will own all such partnership interests free and clear of all Liens (except Liens arising under the New Credit Agreement, restrictions on transferability in the Operating LP Agreement or as described in the Registration Statement, the General Disclosure Package and the Prospectus).

(xvii) Ownership of the OLP GP. After giving effect to the Formation Transactions, at the Closing Time and any Date of Delivery, the Partnership will own all of the issued and outstanding membership interests in the OLP GP; such membership interests have been duly authorized and validly issued in accordance with the OLP GP LLC Agreement, and are fully paid (to the extent required by the OLP GP LLC Agreement) and non-assessable (except as such non-assessability may be affected by Sections 18-303, 18-607 and 18-804 of the Delaware LLC Act); and the Partnership will own all such membership interests free and clear of all Liens (with the exception of Liens arising under the New Credit Agreement, restrictions on transferability in the OLP GP LLC Agreement or as described in the Registration Statement, the General Disclosure Package and the Prospectus).

(xviii) Capitalization. At the Closing Time, after giving effect to the Formation Transactions and the offering of the Initial Securities as contemplated by this Agreement, the issued and outstanding partnership interests of the Partnership will consist of 22,610,056 Common Units, 22,610,056 Subordinated Units, the GP Interest and the IDRs. Assuming no purchase by the Underwriters of the Option Securities, other than the EEP Units and the IDRs, the Initial Securities will be the only limited partner interests of the Partnership issued and outstanding at the Closing Time and each Date of Delivery.

(xix) Minority-Owned Interests. At the Closing Time, after giving effect to the Formation Transactions, the Partnership will own, directly or indirectly, a 35% interest in Texas Express Pipeline LLC, a Delaware limited liability company (“Texas Express Pipeline”), and Texas Express Gathering LLC (“Texas Express Gathering” and, together with Texas Express Pipeline, “Texas Express”). To the knowledge of the Enbridge Parties, the representations and warranties regarding the subsidiaries of the Partnership Parties in Sections 1(a)(x), (xxvi)-(xxvii), (xxxi)-(xxxviii), (xliii)-(xlv) and (xlviii)-(li) are true and correct as applied to Texas Express.

(xx) No Other Equity Ownership. Other than its ownership of the GP Interest and the IDRs, the General Partner will not, at the Closing Time and each Date of Delivery, own, directly or indirectly, any equity or long-term debt securities of any corporation, partnership, limited liability company, joint venture, association or other entity. Other than (i) the Partnership’s ownership of a 38.999% limited partner interest in the Operating Partnership and 100% membership interest in the OLP GP, (ii) the Operating Partnership’s ownership of the Subsidiaries, (iii) the OLP GP’s ownership of a 0.001% general partner interest in the Operating Partnership, and (iv) the Operating Partnership’s ownership of a 35% interest in each of Texas Express Pipeline and Texas Express Gathering, none of the Partnership Parties will, at the Closing Time and each Date of Delivery, own, directly or indirectly, any equity or long-term debt securities of any corporation, partnership, limited liability company, joint venture, association or other entity.

(xxi) No Preemptive or Registration Rights. Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, there are no (A) preemptive rights or other rights to subscribe for or to purchase, nor any restriction upon the voting or transfer of, any equity securities of the Partnership Parties or (B) outstanding options or warrants to purchase

any securities of the Partnership. None of the outstanding equity interests of any Partnership Party were issued in violation of the preemptive or similar rights of any securityholder of such Partnership Party. Neither the filing of the Registration Statement nor the offering or sale of the Securities as contemplated by this Agreement gives rise to any rights for or relating to the registration of any Common Units or other securities of the Partnership, except such rights as have been waived or satisfied.

(xxii) Authorization of Agreement. This Agreement has been duly authorized, executed and delivered by each of the Enbridge Parties.

(xxiii) Authorization, Execution and Delivery of Operative Documents. At or before the Closing Time, each of the Operative Documents will be duly authorized, executed and delivered by each of the Enbridge Parties party thereto and, assuming due authorization by the other parties thereto, will be a valid and legally binding agreement of each of the Enbridge Parties party thereto, enforceable against each of the Enbridge Parties party thereto in accordance with their terms; provided, that, with respect to each agreement described in this Section 1(a)(xxiii), the enforceability thereof may be limited by (A) bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws relating to or affecting creditors’ rights generally and by general principles of equity (regardless of whether such enforceability is considered in a proceeding in equity or at law) and (B) public policy, any applicable law relating to fiduciary duties and indemnification and an implied covenant of good faith and fair dealing.

(xxiv) Authorization of Securities. The Securities to be purchased by the Underwriters have been duly authorized for issuance and sale to the Underwriters pursuant to this Agreement and, when issued and delivered pursuant to this Agreement against payment of the consideration set forth herein, will be validly issued and fully paid (to the extent required under the Partnership Agreement) and non-assessable (except as such non-assessability may be affected by matters described in Sections 17-303, 17-607 and 17-804 of the Delaware LP Act), and the issuance of the Securities is not subject to the preemptive or other similar rights of any securityholder of the Partnership, except such rights as have been waived or satisfied.

(xxv) Description of the Securities. The Securities, when issued and delivered in accordance with the terms of the Partnership Agreement and this Agreement against payment therefor as provided therein and herein, and the EEP Units and the IDRs, when issued and delivered in accordance with the terms of the Partnership Agreement, will conform, in all material respects, to the descriptions thereof contained in the Registration Statement, the General Disclosure Package and the Prospectus and such description conforms to the rights set forth in the instruments defining the same.

(xxvi) Absence of Violations, Defaults and Conflicts. None of the Enbridge Parties or any of the respective subsidiaries of the Partnership Parties is (A) in violation of its charter, by-laws, certificate of formation, agreement of limited partnership, limited liability company agreement or similar organizational document, (B) in violation, breach or default, and no event has occurred that, with notice or lapse of time or both, would constitute such a violation or breach of, or default under, any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or other agreement or instrument to which any Enbridge Party or any of the respective subsidiaries of the Partnership Parties is a party or by which it or any of them may be bound or to which any of the properties or assets of the Enbridge Parties or any of the respective subsidiaries of the Partnership Parties is subject (collectively, “Agreements and Instruments”), except for such violations, breaches and defaults that would not, singly or in the aggregate, result in a Material Adverse Effect, (C) in violation of any law, statute, rule, regulation, judgment, order, writ or

decree of any arbitrator, court, governmental body, regulatory body, administrative agency or other authority, body or agency having jurisdiction over the Enbridge Parties or any of the respective subsidiaries of the Partnership Parties or any of their respective properties, assets or operations (each, a “Governmental Entity”), except for such violations that would not, singly or in the aggregate, result in a Material Adverse Effect, or (D) in violation, breach or default of the Operative Documents. The execution, delivery and performance of this Agreement and the Operative Documents by the Enbridge Parties that are parties hereto or thereto, and the consummation of the Formation Transactions and the transactions contemplated herein and in the Transaction Documents, the Registration Statement, the General Disclosure Package and the Prospectus (including the issuance and sale of the Securities and the use of the proceeds from the sale of the Securities as described therein under the caption “Use of Proceeds”) do not and will not, whether with or without the giving of notice or passage of time or both, conflict with or constitute a breach of, or default or Repayment Event (as defined below) under, or result in the creation or imposition of any Lien (other than Liens arising under the New Credit Agreement) upon any properties or assets of any of the Enbridge Parties or any of the respective subsidiaries of the Partnership Parties pursuant to, the Agreements and Instruments (except for such conflicts, breaches, defaults or Repayment Events or Liens that would not, singly or in the aggregate, result in a Material Adverse Effect or materially and adversely affect their respective properties or assets), nor will such action result in (A) any violation of the provisions of the charter, by-laws or similar organizational document of the Enbridge Parties or any of the respective subsidiaries of the Partnership Parties or (B) any law, statute, rule, regulation, judgment, order, writ or decree of any Governmental Entity (except with respect to this clause (B) for any violations that would not, singly or in the aggregate, result in a Material Adverse Effect). As used herein, a “Repayment Event” means any event or condition which gives the holder of any note, debenture or other evidence of indebtedness (or any person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a portion of such indebtedness by the Enbridge Parties or any of the respective subsidiaries of the Partnership Parties.

(xxvii) Absence of Labor Dispute. No labor dispute with the employees of any of the Partnership Parties or any of their respective subsidiaries or any of their affiliates who will provide services on their behalf exists or, to the knowledge of the Enbridge Parties, is imminent, and none of the Enbridge Parties is aware of any existing or imminent labor disturbance by the employees of any of the Partnership Parties or any of their respective subsidiaries’ principal suppliers, manufacturers, customers or contractors, which, in either case, would result in a Material Adverse Effect.

(xxviii) Absence of Proceedings. Except as disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, there is no action, suit, proceeding, inquiry or investigation before or brought by any Governmental Entity now pending or, to the knowledge of the Enbridge Parties, threatened, against or affecting any of the Partnership Parties or any of their respective subsidiaries, that would reasonably be expected to result in a Material Adverse Effect or materially and adversely affect their respective properties or assets or the performance of their obligations under this Agreement or any of the Transaction Documents or the consummation of any of the transactions contemplated herein or therein.

(xxix) Accuracy of Exhibits. There are no franchises, contracts or documents which are required by the 1933 Act or the 1933 Act Regulations to be described in the Registration Statement, the General Disclosure Package or the Prospectus or to be filed as exhibits to the Registration Statement which have not been so described or filed as required. Each such contract or document that is described in the Registration Statement, the General Disclosure Package or the Prospectus conforms in all material respects to the description thereof.

(xxx) Absence of Further Requirements. No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any Governmental Entity is necessary or required for the performance by any of the Enbridge Parties of their respective obligations hereunder, in connection with the offering, issuance or sale of the Securities hereunder or the consummation of the Formation Transactions or the transactions contemplated by this Agreement or any of the Transaction Documents, except (A) such as have been already obtained or as may be required under the 1933 Act, the 1933 Act Regulations, the rules of the New York Stock Exchange, state securities laws or the rules of FINRA, (B) such as have been obtained under the laws and regulations of jurisdictions outside the United States in which the Reserved Securities were offered and (C) except with regards to subsection (B) hereof, for any such filing, authorization, approval, consent, license, order, registration, qualification or decree that if not obtained, would not be reasonably be expected to have a Material Adverse Effect or prevent or materially hinder or delay the performance of this Agreement or the consummation of any of the Formation Transactions.

(xxxi) Possession of Licenses and Permits. Each of the Partnership Parties and their respective subsidiaries possess such permits, licenses, approvals, consents and other authorizations (collectively, “Governmental Licenses”) issued by the appropriate Governmental Entities necessary to conduct the business now operated by them, except where the failure so to possess would not, singly or in the aggregate, reasonably be expected to result in a Material Adverse Effect. Each of the Partnership Parties and their respective subsidiaries are in compliance with the terms and conditions of all Governmental Licenses, except where the failure so to comply would not, singly or in the aggregate, reasonably be expected to result in a Material Adverse Effect. All of the Governmental Licenses are valid and in full force and effect, except when the invalidity of such Governmental Licenses or the failure of such Governmental Licenses to be in full force and effect would not, singly or in the aggregate, result in a Material Adverse Effect. Neither any Partnership Party nor any of their respective subsidiaries has received any notice of proceedings relating to the revocation or modification of any Governmental Licenses which, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would reasonably be expected to result in a Material Adverse Effect.

(xxxii) Title to Property. Following consummation of the Formation Transactions, at the Closing Time and each Date of Delivery, the Partnership Parties and their respective subsidiaries will have indefeasible title to all real property and good title to all personal property described in the Registration Statement, the General Disclosure Package or the Prospectus as owned by them, in each case, free and clear of all mortgages, pledges, liens, security interests, claims, restrictions or encumbrances of any kind except such as (A) are described in the Registration Statement, the General Disclosure Package and the Prospectus (B) arise under the New Credit Agreement or (C) do not, singly or in the aggregate, materially affect the value of such property and do not interfere with the use made and proposed to be made of such property by the Partnership Parties or any of their respective subsidiaries; and all of the leases and subleases material to the business of the Partnership Parties and their respective subsidiaries, considered as one enterprise, and under which any Partnership Party or any of its subsidiaries holds properties described in the Registration Statement, the General Disclosure Package or the Prospectus, are in full force and effect, and neither any Partnership Party nor any of their respective subsidiaries has any notice of any material claim of any sort that has been asserted by anyone adverse to the rights of any Partnership Party or any of its subsidiaries under any of the leases or subleases mentioned above, or affecting or questioning the rights of any Partnership Party or any of its subsidiaries to the continued possession of the leased or subleased premises under any such lease or sublease.

(xxxiii) Rights-of-Way. At the Closing Time and each Date of Delivery, after giving effect to the Formation Transactions, (A) the Partnership Parties and their respective subsidiaries have such easements or rights-of-way from each person (collectively, “rights-of-way”) as are necessary to conduct their business in the manner described, and subject to the limitations contained, in the Registration Statement, the General Disclosure Package and the Prospectus, except for (i) qualifications, reservations and encumbrances that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect and (ii) such rights-of-way that, if not obtained, would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect; (B) the Partnership Parties and their respective subsidiaries have, or following consummation of the Formation Transactions will have, fulfilled and performed all their material obligations with respect to such rights-of-way and no event has occurred that allows, or after notice or lapse of time would allow, revocation or termination thereof or would result in any impairment of the rights of the holder of any such rights-of-way, except for such revocations, terminations and impairments that would not reasonably be expected to result in a Material Adverse Effect; and (C) except as described in the Registration Statement, the General Disclosure Package and the Prospectus, none of such rights-of-way contains any restriction that is materially burdensome to the Partnership Parties and their respective subsidiaries, taken as a whole.

(xxxiv) Possession of Intellectual Property. At the Closing Time and each Date of Delivery, after giving effect to the Formation Transactions, each of the Partnership Parties and their respective subsidiaries will own or possess, or will be able to acquire on reasonable terms, adequate patents, patent rights, licenses, inventions, copyrights, know how (including trade secrets and other unpatented and/or unpatentable proprietary or confidential information, systems or procedures), trademarks, service marks, trade names or other intellectual property (collectively, “Intellectual Property”) necessary to carry on the business now operated by it; none of the Partnership Parties or any of their respective subsidiaries has received any notice or is otherwise aware of any infringement of or conflict with asserted rights of others with respect to any Intellectual Property or of any facts or circumstances which would render any Intellectual Property invalid or inadequate to protect the interest of any Partnership Party or any of its subsidiaries therein, and which infringement or conflict (if the subject of any unfavorable decision, ruling or finding) or invalidity or inadequacy, singly or in the aggregate, would result in a Material Adverse Effect.

(xxxv) Certain Relationships and Related Transactions. No relationship, direct or indirect, exists between or among any Partnership Party or any of its subsidiaries, on the one hand, and the directors, officers, stockholders, affiliates, customers or suppliers of any Partnership Party or any of its subsidiaries, on the other hand, that is required to be described in the Registration Statement, the General Disclosure Package and the Prospectus and is not so described.

(xxxvi) ERISA. Except as would not reasonably be expected to result in a Material Adverse Effect, (i) the Partnership Parties and their respective subsidiaries are in compliance in all material respects with all presently applicable provisions of the Employee Retirement Income Security Act of 1974, as amended, including the regulations and published governmental interpretations thereunder (“ERISA”); (ii) no “reportable event” (as defined in Section 4043(c) of ERISA) has occurred with respect to any “pension plan” (as defined in Section 3(2) of ERISA) for which any Partnership Party or any of its subsidiaries would have any liability, excluding any reportable event for which a waiver could apply; (iii) none of the Partnership Parties nor any of their respective subsidiaries has incurred, nor does any such entity expect to incur, liability under (a) Title IV of ERISA with respect to termination of, or withdrawal from, any “pension plan” or

(b) Sections 412 or 4971 of the Internal Revenue Code of 1986, as amended, including the regulations and published governmental interpretations thereunder (the “Code”) with respect to any “pension plan”; (iv) each “pension plan” for which any Partnership Party or any of its subsidiaries would have any liability that is intended to be qualified under Section 401(a) of the Code is the subject of a favorable determination or opinion letter from the Internal Revenue Service to the effect that it is so qualified and, to the knowledge of the Enbridge Parties, nothing has occurred, whether by action or by failure to act, which would reasonably be expected to cause the loss of such qualification; and (v) no Partnership Party or any subsidiary thereof has incurred any unpaid liability to the Pension Benefit Guaranty Corporation (other than for payment of premiums in the ordinary course of business).

(xxxvii) Environmental Laws. Except as described in the Registration Statement, the General Disclosure Package and the Prospectus or as would not, singly or in the aggregate, reasonably be expected to result in a Material Adverse Effect, (A) none of the Partnership Parties or any of their respective subsidiaries is in violation of any federal, state, local or foreign statute, law, rule, regulation, ordinance, code, policy or rule of common law or any judicial or administrative interpretation thereof, including any judicial or administrative order, consent, decree or judgment, relating to pollution or protection of human health, the environment (including, without limitation, ambient air, surface water, groundwater, land surface or subsurface strata) or wildlife, including, without limitation, laws and regulations relating to the release or threatened release of chemicals, pollutants, contaminants, wastes, toxic substances, hazardous substances, petroleum or petroleum products, asbestos-containing materials or mold (collectively, “Hazardous Materials”) or to the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of Hazardous Materials (collectively, “Environmental Laws”), (B) each of the Partnership Parties and their respective subsidiaries have all permits, authorizations and approvals required under any applicable Environmental Laws and are each in compliance with their requirements, (C) there are no pending or threatened administrative, regulatory or judicial actions, suits, demands, demand letters, claims, liens, notices of noncompliance or violation, investigation or proceedings relating to any Environmental Law against any Partnership Party or any of its subsidiaries and (D) to the knowledge of the Enbridge Parties, there are no events or circumstances that would reasonably be expected to form the basis of an order for clean-up or remediation, or an action, suit or proceeding by any private party or Governmental Entity, against or affecting any Partnership Party or any of its subsidiaries relating to Hazardous Materials or any Environmental Laws. In the ordinary course of its business, the Partnership Parties periodically review the effect of Environmental Laws on their business, operations and properties, in the course of which they identify and evaluates associated costs and liabilities (including, without limitation, any capital or operating expenditures required for clean-up, closure of properties or compliance with Environmental Laws, or any permit, license or approval, any related constraints on operating activities and any potential liabilities to third parties). On the basis of such review, the Partnership Parties have concluded that such associated costs and liabilities would not, singly or in the aggregate, result in a Material Adverse Effect, except as described in or contemplated in the Registration Statement, the General Disclosure Package and the Prospectus.

(xxxviii) Accounting Controls. Each of the Partnership Parties and their respective subsidiaries maintain effective internal control over financial reporting (as defined under Rule 13a-15 and 15d-15 under the rules and regulations of the Commission under the 1934 Act (the “1934 Act Regulations”)) and a system of internal accounting controls sufficient to provide reasonable assurances that (A) transactions are executed in accordance with management’s general or specific authorization; (B) transactions are recorded as necessary to

permit preparation of financial statements in conformity with GAAP and to maintain accountability for assets; (C) access to assets is permitted only in accordance with management’s general or specific authorization; and (D) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences. Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, since the end of the Partnership Parties’ most recent audited fiscal year, there has been (1) no material weakness in the Partnership Parties’ internal control over financial reporting (whether or not remediated) and (2) no change in the Partnership Parties’ internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Partnership Parties’ internal control over financial reporting.

(xxxix) Disclosure Controls. The Partnership has established and maintains “disclosure controls and procedures” (as defined in Rule 13a-15(e) under the ▇▇▇▇ ▇▇▇); and (i) such disclosure controls and procedures are designed to ensure that the information required to be disclosed by the Partnership in the reports it files or will file or submit under the 1934 Act, as applicable, is accumulated and communicated to management of the General Partner, including its principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure to be made and (ii) such disclosure controls and procedures are effective in all material respects to perform the functions for which they were established to the extent required by Rule 13a-15 of the 1934 Act.

(xl) Compliance with the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act. The Partnership has taken all necessary actions to ensure that, upon the effectiveness of the Registration Statement, it will be in compliance with all provisions of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act of 2002 and all rules and regulations promulgated thereunder or implementing the provisions thereof (the “▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act”) that are then in effect and with which the Partnership is required to comply as of the effectiveness of the Registration Statement.

(xli) Contribution Agreement. The Contribution Agreement is in a form legally sufficient to transfer or convey to the Partnership Parties thereunder all of the right, title and interest of the transferor stated therein and to the ownership interests, assets and rights purported to be transferred thereby, as described in the Registration Statement, the General Disclosure Package and the Prospectus, subject to the conditions, reservations, encumbrances and limitations described in the Contribution Agreement. Upon execution and delivery of the Contribution Agreement, the Partnership Parties will succeed in all material respects to the business, assets, properties, liabilities and operations reflected by the pro forma combined financial statements of the Partnership.

(xlii) Transfer Taxes. There are no transfer taxes or other similar fees or charges under federal law or the laws of any state, or any political subdivision thereof, required to be paid in connection with the execution and delivery of this Agreement or the issuance by the Partnership or sale by the Partnership of the Securities, except for those as would not be reasonably expected to have a Material Adverse Effect.

(xliii) Payment of Taxes. All United States federal income tax returns of each of the Partnership Parties and their respective subsidiaries required by law to be filed have been filed and all taxes shown by such returns or otherwise assessed, which are due and payable, have been paid, except assessments against which appeals have been or will be promptly taken and as to which adequate reserves have been provided. The United States federal income tax returns of the Predecessor through the fiscal year ended December 31, 2012 have been settled and no assessment in connection therewith has been made against it. Each of the Partnership Parties and

their respective subsidiaries have filed all other tax returns that are required to have been filed by them pursuant to applicable foreign, state, local or other law except insofar as the failure to file such returns would not result in a Material Adverse Effect, and has paid all taxes due pursuant to such returns or pursuant to any assessment received by any Partnership Party and their respective subsidiaries, except for such taxes, if any, as are being contested in good faith and as to which adequate reserves have been established by the Partnership Parties. The charges, accruals and reserves on the books of any Partnership Party in respect of any income and tax liability for any years not finally determined are adequate to meet any assessments or re-assessments for additional income tax for any years not finally determined, except to the extent of any inadequacy that would not reasonably be expected to result in a Material Adverse Effect.

(xliv) Insurance. Each of the Partnership Parties and the respective subsidiaries of the Partnership Parties carry or are entitled to the benefits of insurance, with financially sound and reputable insurers, in such amounts and covering such risks as is generally maintained by companies of established repute engaged in the same or similar business, and all such insurance is in full force and effect. The Partnership Parties have no reason to believe that any Partnership Party or any of the respective subsidiaries of the Partnership Parties will not be able (A) to renew its existing insurance coverage as and when such policies expire or (B) to obtain comparable coverage from similar institutions as may be necessary or appropriate to conduct its business as now conducted and at a cost that would not reasonably be expected to result in a Material Adverse Effect. Neither any Partnership Party nor any of their respective subsidiaries has been denied any insurance coverage which it has sought or for which it has applied.

(xlv) Subsidiary Distributions. At the Closing Time and any Date of Delivery, after giving effect to the Formation Transactions, no direct or indirect subsidiary of the Partnership will be prohibited, directly or indirectly, from paying any distributions to the Partnership, from making any other distribution on such subsidiary’s equity interests, from repaying to the Partnership any loans or advances to such subsidiary from the Partnership or from transferring any of such subsidiary’s property or assets to the Partnership or any other subsidiary of the Partnership, except as provided under the New Credit Agreement and the Working Capital Agreement.

(xlvi) Investment Company Act. None of the Partnership Parties is required, and upon the issuance and sale of the Securities as herein contemplated and the application of the net proceeds therefrom as described in the Registration Statement, the General Disclosure Package and the Prospectus under “Use of Proceeds,” none of the Partnership Parties will be required, to register as an “investment company” under the Investment Company Act of 1940, as amended.

(xlvii) Absence of Manipulation. None of the Enbridge Parties nor any affiliate of any Enbridge Party has taken, nor will any Enbridge Party or any of its affiliates take, directly or indirectly, any action which is designed, or would be reasonably likely, to cause or result in, or which constitutes, the stabilization or manipulation of the price of any security of the Partnership to facilitate the sale or resale of the Securities or to result in a violation of Regulation M under the 1934 Act.

(xlviii) Foreign Corrupt Practices Act. None of the Partnership Parties, any of their respective subsidiaries or, to the knowledge of the Enbridge Parties, any director, officer, agent, employee, affiliate or other person acting on behalf of any Partnership Party or any of its subsidiaries is aware of or has taken any action, directly or indirectly, that would result in a violation by such persons of the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder (the “FCPA”), including, without limitation, making use of the mails

or any means or instrumentality of interstate commerce corruptly in furtherance of an offer, payment, promise to pay or authorization of the payment of any money, or other property, gift, promise to give, or authorization of the giving of anything of value to any “foreign official” (as such term is defined in the FCPA) or any foreign political party or official thereof or any candidate for foreign political office, in contravention of the FCPA and the Partnership Parties, their respective subsidiaries and, to the knowledge of the Enbridge Parties, their respective affiliates have conducted their businesses in compliance with the FCPA and have instituted and maintain policies and procedures designed to ensure, and which are reasonably expected to continue to ensure, continued compliance therewith.

(xlix) Money Laundering Laws. The operations of the Partnership Parties and their respective subsidiaries are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the money laundering statutes of all jurisdictions, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any Governmental Entity (collectively, the “Money Laundering Laws”); and no action, suit or proceeding by or before any Governmental Entity involving any Partnership Party or any of its subsidiaries with respect to the Money Laundering Laws is pending or, to the knowledge of the Enbridge Parties, threatened.

(l) OFAC. None of the Partnership Parties, any of their respective subsidiaries or, to the knowledge of the Enbridge Parties, any director, officer, agent, employee, affiliate or representative of any Partnership Party or any of its subsidiaries is an individual or entity (“Person”) currently the subject or target of any sanctions administered or enforced by the United States Government, including, without limitation, the U.S. Department of the Treasury’s Office of Foreign Assets Control (“OFAC”), the United Nations Security Council, the European Union, Her Majesty’s Treasury, or other relevant sanctions authority (collectively, “Sanctions”), nor is any Partnership Party or any of its subsidiaries located, organized or resident in a country or territory that is the subject of Sanctions; and the Partnership will not directly or indirectly use the proceeds of the sale of the Securities, or lend, contribute or otherwise make available such proceeds to any subsidiaries, joint venture partners or other Person, to fund any activities of or business with any Person, or in any country or territory, that, at the time of such funding, is the subject of Sanctions or in any other manner that will result in a violation by any Person (including any Person participating in the transaction, whether as underwriter, advisor, investor or otherwise) of Sanctions.

(li) Lending Relationship. Except as disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, (i) none of the Partnership Parties or any of their subsidiaries has any material lending or other relationship with any bank or lending affiliate of any Underwriter and (ii) the Partnership does not intend to use any of the proceeds from the sale of the Securities to repay any outstanding debt owed to any affiliate of any Underwriter.

(lii) Statistical and Market-Related Data. Any statistical and market-related data included in the Registration Statement, the General Disclosure Package or the Prospectus are based on or derived from sources that the Enbridge Parties believe, after reasonable inquiry, to be reliable and accurate and, to the extent required, the Partnership has obtained the written consent to the use of such data from such sources.

(liii) Private Placement. The issuance of (i) the EEP Units to EEP and (ii) the GP Interest and the IDRs to the General Partner are exempt from the registration requirements of the 1933 Act and securities laws of any state having jurisdiction with respect thereto, and none of the Enbridge Parties has taken or will take any action that would cause the loss of such exemption.

(liv) Offering Materials. None of the Enbridge Parties has distributed and, prior to the later to occur of the Closing Time or any Date of Delivery and completion of the distribution of the Securities, will distribute any offering material in connection with the offering and sale of the Securities other than any preliminary prospectus, the Prospectus, any Issuer Free Writing Prospectus to which the Representatives have consented in accordance with this Agreement, any other materials, if any, permitted by the 1933 Act, including Rule 134, and in connection with the Reserved Securities, the enrollment materials prepared by ▇▇▇▇▇▇▇ ▇▇▇▇▇.

(lv) FINRA. To the knowledge of the Partnership and the General Partner, there are no affiliations or associations between any member of FINRA and any of the General Partner’s officers or directors or the Partnership’s 5% or greater security holders, except as described in the Registration Statement, the General Disclosure Package and the Prospectus.

(lvi) Sales of Reserved Securities. In connection with any offer and sale of Reserved Securities outside the United States, each preliminary prospectus, the Prospectus, any prospectus wrapper and any amendment or supplement thereto, at the time it was distributed, complied and will comply in all material respects with any applicable laws or regulations of foreign jurisdictions in which the same is distributed. The Partnership has not offered, or caused the Representatives to offer, Reserved Securities to any person with the specific intent to unlawfully influence (i) a customer or supplier of the Partnership or any of its affiliates to alter the customer’s or supplier’s level or type of business with any such entity or (ii) a trade journalist or publication to write or publish favorable information about the Partnership or any of its affiliates, or their respective businesses or products.

(b) Officer’s Certificates. Any certificate signed by any officer of any Enbridge Party or any of its subsidiaries delivered to the Representatives or to counsel for the Underwriters shall be deemed a representation and warranty by such Enbridge Party to each Underwriter as to the matters covered thereby.

SECTION 2. Sale and Delivery to Underwriters; Closing.

(a) Initial Securities. On the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Partnership agrees to sell to each Underwriter, severally and not jointly, and each Underwriter, severally and not jointly, agrees to purchase from the Partnership, at the price per Common Unit set forth in Schedule A, that number of Initial Securities set forth in Schedule A opposite the name of such Underwriter, plus any additional number of Initial Securities which such Underwriter may become obligated to purchase pursuant to the provisions of Section 10 hereof, subject, in each case, to such adjustments among the Underwriters as ▇▇▇▇▇▇▇ ▇▇▇▇▇ in its sole discretion shall make to eliminate any sales or purchases of fractional Common Units.

(b) Option Securities. In addition, on the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Partnership hereby grants an option to the Underwriters, severally and not jointly, to purchase up to an additional 2,775,000 Common Units, at the price per Common Unit set forth in Schedule A, less an amount per Common Unit equal to any distributions declared by the Partnership and payable on the Initial Securities but not payable on the Option Securities. The option hereby granted may be exercised for 30 days after the date hereof and may be exercised in whole or in part at any time from time to time upon notice by the Representatives to the Partnership setting forth the number of Option Securities as to which the several Underwriters are then

exercising the option and the time and date of payment and delivery (a “Date of Delivery”) for such Option Securities. Any such Date of Delivery shall be determined by the Representatives, but shall not be earlier than two full business days after the exercise of said option nor later than seven full business days after the exercise of said option; provided that, in any event, any such Date of Delivery shall not be prior to the Closing Time. If the option is exercised as to all or any portion of the Option Securities, each of the Underwriters, acting severally and not jointly, will purchase that proportion of the total number of Option Securities then being purchased which the number of Initial Securities set forth in Schedule A opposite the name of such Underwriter bears to the total number of Initial Securities, subject, in each case, to such adjustments as ▇▇▇▇▇▇▇ ▇▇▇▇▇ in its sole discretion shall make to eliminate any sales or purchases of fractional Common Units.

(c) Payment. Payment of the purchase price for, and delivery of, the Initial Securities shall be made at the offices of ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇ LLP, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇, ▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇, or at such other place as shall be agreed upon by the Representatives and the Partnership, at 9:00 A.M. (New York City time) on the third (fourth, if the pricing occurs after 4:30 P.M. (New York City time) on any given day) business day after the date hereof (unless postponed in accordance with the provisions of Section 10), or such other time not later than ten business days after such date as shall be agreed upon by the Representatives and the Partnership (such time and date of payment and delivery being herein called “Closing Time”).

In addition, in the event that any or all of the Option Securities are purchased by the Underwriters, payment of the purchase price for, and delivery of, such Option Securities shall be made at the above-mentioned offices, or at such other place as shall be agreed upon by the Representatives and the Partnership, on each Date of Delivery as specified in the notice from ▇▇▇▇▇▇▇ ▇▇▇▇▇ to the Partnership.

Payment shall be made to the Partnership by wire transfer of immediately available funds to a bank account designated by the Partnership against delivery to the Representatives for the respective accounts of the Underwriters of the Securities to be purchased by them. It is understood that each Underwriter has authorized the Representatives, for its account, to accept delivery of, receipt for, and make payment of the purchase price for, the Initial Securities and the Option Securities, if any, which it has agreed to purchase. ▇▇▇▇▇▇▇ ▇▇▇▇▇, individually and not as representative of the Underwriters, may (but shall not be obligated to) make payment of the purchase price for the Initial Securities or the Option Securities, if any, to be purchased by any Underwriter whose funds have not been received by the Closing Time or the relevant Date of Delivery, as the case may be, but such payment shall not relieve such Underwriter from its obligations hereunder. Delivery of the Securities shall be made through the facilities of The Depository Trust Company unless the Representatives shall otherwise instruct.

SECTION 3. Covenants of the Enbridge Entities. The Enbridge Entities, jointly and severally, covenant with each Underwriter as follows:

(a) Compliance with Securities Regulations and Commission Requests. The Partnership, subject to Section 3(b), will comply with the requirements of Rule 430A, and will notify the Representatives promptly, and confirm the notice in writing, (i) when any post-effective amendment to the Registration Statement shall become effective or any amendment or supplement to the Prospectus shall have been filed, (ii) of the receipt of any comments on the Registration Statement from the Commission, (iii) of any request by the Commission for any amendment to the Registration Statement or any amendment or supplement to the Prospectus or for additional information, (iv) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or any post-effective amendment or of any order preventing or suspending the use of any preliminary prospectus or the Prospectus, or of the suspension of the qualification of the Securities for offering or sale in any jurisdiction, or of the initiation or threatening of any proceedings for any of such purposes or of any

examination pursuant to Section 8(d) or 8(e) of the 1933 Act concerning the Registration Statement and (v) if the Partnership becomes the subject of a proceeding under Section 8A of the 1933 Act in connection with the offering of the Securities. The Partnership will effect all filings required under Rule 424(b), in the manner and within the time period required by Rule 424(b) (without reliance on Rule 424(b)(8)), and will take such steps as it deems necessary to ascertain promptly whether the form of prospectus transmitted for filing under Rule 424(b) was received for filing by the Commission and, in the event that it was not, it will promptly file such prospectus. The Partnership will use its reasonable best efforts to prevent the issuance of any stop order, prevention or suspension and, if any such order is issued, to obtain the lifting thereof as soon as practicable.

(b) Continued Compliance with Securities Laws. The Partnership will comply with the 1933 Act and the 1933 Act Regulations so as to permit the completion of the distribution of the Securities as contemplated in this Agreement and in the Registration Statement, the General Disclosure Package and the Prospectus. If at any time when a prospectus relating to the Securities is (or, but for the exception afforded by Rule 172 of the 1933 Act Regulations (“Rule 172”), would be) required by the 1933 Act to be delivered in connection with sales of the Securities, any event shall occur or condition shall exist as a result of which it is necessary, in the opinion of counsel for the Underwriters or for the Partnership, to (i) amend the Registration Statement in order that the Registration Statement will not include an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading, (ii) amend or supplement the General Disclosure Package or the Prospectus in order that the General Disclosure Package or the Prospectus, as the case may be, will not include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein not misleading in the light of the circumstances existing at the time it is delivered to a purchaser or (iii) amend the Registration Statement or amend or supplement the General Disclosure Package or the Prospectus, as the case may be, in order to comply with the requirements of the 1933 Act or the 1933 Act Regulations, the Partnership will promptly (A) give the Representatives notice of such event, (B) prepare any amendment or supplement as may be necessary to correct such statement or omission or to make the Registration Statement, the General Disclosure Package or the Prospectus comply with such requirements and, a reasonable amount of time prior to any proposed filing or use, furnish the Representatives with copies of any such amendment or supplement and (C) file with the Commission any such amendment or supplement; provided that the Partnership shall not file or use any such amendment or supplement to which the Representatives or counsel for the Underwriters shall reasonably object. The Partnership will furnish to the Underwriters such number of copies of such amendment or supplement as the Underwriters may reasonably request. The Partnership has given the Representatives notice of any filings made pursuant to the 1934 Act or 1934 Act Regulations within 48 hours prior to the Applicable Time; the Partnership will give the Representatives notice of its intention to make any such filing from the Applicable Time to the Closing Time and will furnish the Representatives with copies of any such documents a reasonable amount of time prior to such proposed filing, as the case may be, and will not file or use any such document to which the Representatives or counsel for the Underwriters shall reasonably object.

(c) Delivery of Registration Statement. The Partnership has furnished or will deliver to the Representatives and counsel for the Underwriters, without charge, copies of the Registration Statement as originally filed and each amendment thereto (including exhibits filed therewith) and copies of all consents and certificates of experts as filed therewith, and will also deliver to the Representatives, upon request and without charge, a conformed copy of the Registration Statement as originally filed and each amendment thereto (without exhibits) for each of the Underwriters. The copies of the Registration Statement and each amendment thereto furnished to the Underwriters will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to ▇▇▇▇▇, except to the extent permitted by Regulation S-T.

(d) Delivery of Prospectuses. The Partnership has delivered to each Underwriter, without charge, as many copies of each preliminary prospectus as such Underwriter reasonably requested, and the Partnership hereby consents to the use of such copies for purposes permitted by the 1933 Act. The Partnership will furnish to each Underwriter, without charge, during the period when a prospectus relating to the Securities is (or, but for the exception afforded by Rule 172, would be) required to be delivered under the 1933 Act, such number of copies of the Prospectus (as amended or supplemented) as such Underwriter may reasonably request. The Prospectus and any amendments or supplements thereto furnished to the Underwriters will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to ▇▇▇▇▇, except to the extent permitted by Regulation S-T.

(e) Blue Sky Qualifications. The Partnership will use its reasonable best efforts, in cooperation with the Underwriters, to qualify the Securities for offering and sale under the applicable securities laws of such states and other jurisdictions (domestic or foreign) as the Representatives may designate and to maintain such qualifications in effect so long as required to complete the distribution of the Securities; provided, however, that the Partnership shall not be obligated to file any general consent to service of process or to qualify to do business or as a dealer in securities in any jurisdiction in which it is not so qualified or to subject itself to taxation in respect of doing business in any jurisdiction in which it is not otherwise so subject.

(f) Rule 158. The Partnership will timely file such reports pursuant to the 1934 Act as are necessary in order to make generally available to its securityholders as soon as practicable an earnings statement for the purposes of, and to provide to the Underwriters the benefits contemplated by, the last paragraph of Section 11(a) of the 1933 Act.

(g) Use of Proceeds. The Partnership will use the net proceeds received by it from the sale of the Securities in the manner specified in the Registration Statement, the General Disclosure Package and the Prospectus under “Use of Proceeds.”

(h) Listing. The Partnership will use its reasonable best efforts to effect and maintain the listing of the Common Units (including the Securities) on the New York Stock Exchange.

(i) Restriction on Sale of Securities. During a period of 180 days from the date of the Prospectus, the Partnership will not, without the prior written consent of ▇▇▇▇▇▇▇ ▇▇▇▇▇, (i) directly or indirectly, offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase or otherwise transfer or dispose (or enter into any transaction which is designed to, or might reasonably be expected to, result in the disposition (whether by actual disposition or effective economic disposition due to cash settlement or otherwise) by the Partnership) of, any Common Units or any securities convertible into or exercisable or exchangeable for Common Units or file any registration statement under the 1933 Act with respect to any of the foregoing, or publicly disclose the intention to make any such offer, sale, pledge, disposition or filing, or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of the Common Units, whether any such swap or transaction described in clause (i) or (ii) above is to be settled by delivery of Common Units or such other securities, in cash or otherwise. The foregoing sentence shall not apply to (A) the Securities to be sold hereunder, (B) any Common Units issued by the Partnership upon the exercise of an option or warrant or the conversion of a security outstanding on the date hereof and referred to in the Registration Statement, the General Disclosure Package and the Prospectus, (C) any Common Units, options to purchase Common Units or other equity incentive awards, in each case issued or granted pursuant to the long-term incentive plan or other existing employee benefit plans of the Partnership referred to in the

Registration Statement, the General Disclosure Package and the Prospectus, (D) any Common Units issued pursuant to any non-employee director unit plan or dividend reinvestment plan referred to in the Registration Statement, the General Disclosure Package and the Prospectus or (E) the filing of a registration statement on Form S-8. Notwithstanding the foregoing, if (1) during the last 17 days of the 180-day restricted period the Partnership issues an earnings release or material news or a material event relating to the Partnership occurs or (2) prior to the expiration of the 180-day restricted period, the Partnership announces that it will issue an earnings release or becomes aware that material news or a material event will occur during the 16-day period beginning on the last day of the 180-day restricted period, the restrictions imposed in this clause (i) shall continue to apply until the expiration of the 18-day period beginning on the date of the issuance of the earnings release or the occurrence of the material news or material event, unless ▇▇▇▇▇▇▇ ▇▇▇▇▇ waives, in writing, such extension.

(j) Reporting Requirements. The Partnership, during the period when a Prospectus relating to the Securities is (or, but for the exception afforded by Rule 172, would be) required to be delivered under the 1933 Act, will file all documents required to be filed with the Commission pursuant to the 1934 Act within the time periods required by the 1934 Act and 1934 Act Regulations. Additionally, the Partnership shall report the use of proceeds from the issuance of the Common Units as may be required under Rule 463 under the 1933 Act.

(k) Issuer Free Writing Prospectuses. The Partnership agrees that, unless it obtains the prior written consent of the Representatives, it will not make any offer relating to the Securities that would constitute an Issuer Free Writing Prospectus or that would otherwise constitute a “free writing prospectus,” or a portion thereof, required to be filed by the Partnership with the Commission or retained by the Partnership under Rule 433; provided that the Representatives will be deemed to have consented to the Issuer Free Writing Prospectuses listed on Schedule B-2 hereto and any “road show that is a written communication” within the meaning of Rule 433(d)(8)(i) that has been reviewed by the Representatives. The Partnership represents that it has treated or agrees that it will treat each such free writing prospectus consented to, or deemed consented to, by the Representatives as an “issuer free writing prospectus,” as defined in Rule 433, and that it has complied and will comply with the applicable requirements of Rule 433 with respect thereto, including timely filing with the Commission where required, legending and record keeping. If at any time following issuance of an Issuer Free Writing Prospectus there occurred or occurs an event or development as a result of which such Issuer Free Writing Prospectus conflicted or would conflict with the information contained in the Registration Statement, any preliminary prospectus or the Prospectus or included or would include an untrue statement of a material fact or omitted or would omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances existing at that subsequent time, not misleading, the Partnership will promptly notify the Representatives and will promptly amend or supplement, at its own expense, such Issuer Free Writing Prospectus to eliminate or correct such conflict, untrue statement or omission.

(l) Compliance with FINRA Rules. The Partnership hereby agrees that it will ensure that the Reserved Securities will be restricted as required by FINRA or the FINRA rules from sale, transfer, assignment, pledge or hypothecation for a period of three months following the date of this Agreement. The Underwriters will notify the Partnership as to which persons will need to be so restricted. At the request of the Underwriters, the Partnership will direct the transfer agent to place a stop transfer restriction upon such securities for such period of time. Should the Partnership release, or seek to release, from such restrictions any of the Reserved Securities, the Partnership agrees to reimburse the Underwriters for any reasonable expenses (including, without limitation, reasonable legal expenses) they incur in connection with such release.

SECTION 4. Payment of Expenses.

(a) Expenses. The Partnership will pay or cause to be paid all expenses incident to the performance of its obligations under this Agreement, including (i) the preparation, printing and filing of the Registration Statement (including financial statements and exhibits) as originally filed and each amendment thereto, (ii) the preparation, printing and delivery to the Underwriters of copies of each preliminary prospectus, each Issuer Free Writing Prospectus and the Prospectus and any amendments or supplements thereto and any costs associated with electronic delivery of any of the foregoing by the Underwriters to investors, (iii) the preparation, issuance and delivery of the certificates for the Securities, if any, to the Underwriters, including any unit or other transfer taxes and any stamp or other duties payable upon the sale, issuance or delivery of the Securities to the Underwriters, (iv) the fees and disbursements of the Partnership’s counsel, accountants and other advisors, (v) the qualification of the Securities under securities laws in accordance with the provisions of Section 3(e) hereof, including filing fees and the reasonable fees and disbursements of counsel for the Underwriters in connection with the preparation of any Blue Sky memorandum and any supplement thereto, (vi) the fees and expenses of any transfer agent or registrar for the Securities, (vii) the costs and expenses of the Partnership relating to investor presentations on any “road show” undertaken in connection with the marketing of the Securities, including without limitation, expenses associated with the production of road show slides and graphics, fees and expenses of any consultants engaged in connection with the road show presentations, travel and lodging expenses of the representatives and officers of the Partnership Parties and any such consultants, and the cost of aircraft and other transportation chartered in connection with the road show not paid by the Underwriters (and the Underwriters will pay 50% of the cost of such aircraft or other transportation (up to $150,000)), (viii) the filing fees incident to, and the reasonable fees and disbursements of counsel to the Underwriters in connection with, the review by FINRA of the terms of the sale of the Securities (not to exceed $20,000), (ix) the fees and expenses incurred in connection with the listing of the Securities on the New York Stock Exchange and (x) all costs and expenses of the Underwriters, including the fees and disbursements of counsel for the Underwriters, in connection with matters related to the Reserved Securities which are designated by the Partnership for sale to Invitees; and except as otherwise expressly provided herein, the Underwriters shall pay their own costs and expenses, including the costs and expenses of their counsel, transfer taxes on any resale of the Common Units by any Underwriter, 50% of the cost of aircraft and other transportation chartered in connection with the roadshow (up to $150,000), any advertising expenses in connection with any offers they may make and the transportation, lodging and other expenses incurred by the Underwriters on their own behalf in connection with the roadshow and other presentations to prospective purchasers of the Common Units.

(b) Termination of Agreement. If this Agreement is terminated by the Representatives in accordance with the provisions of Section 5(n), Section 9(a)(i) or (iii) or Section 10 hereof, the Partnership shall reimburse the Underwriters for all of their out-of-pocket expenses, including the reasonable fees and disbursements of counsel for the Underwriters.

SECTION 5. Conditions of Underwriters’ Obligations. The obligations of the several Underwriters hereunder are subject to the accuracy of the representations and warranties of the Enbridge Parties contained herein or in certificates of any officer of any Enbridge Party or any of its subsidiaries delivered pursuant to the provisions hereof, to the performance by the Enbridge Parties of their covenants and other obligations hereunder, and to the following further conditions:

(a) Effectiveness of Registration Statement; Rule 430A Information. The Registration Statement, including any Rule 462(b) Registration Statement, has become effective and, at the Closing Time or the applicable Date of Delivery, no stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto has been issued under the 1933 Act, no order preventing or suspending the use of any preliminary prospectus or the Prospectus has been issued and no proceedings for any of those purposes have been instituted or are pending or, to the knowledge of the Enbridge Parties, contemplated; and the Partnership has complied with each request (if any) from the Commission for additional information. A prospectus containing the Rule 430A Information shall have been filed with the Commission in the manner and within the time frame required by Rule 424(b) without reliance on Rule 424(b)(8) or a post-effective amendment providing such information shall have been filed with, and declared effective by, the Commission in accordance with the requirements of Rule 430A.

(b) Opinion of Counsel for the Enbridge Parties. At the Closing Time, the Representatives shall have received (i) the favorable opinion, dated the Closing Time, of ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇ LLP, counsel for the Enbridge Parties, in form and substance satisfactory to counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters to the effect set forth in Exhibit A-1 hereto and to such further effect as counsel to the Underwriters may reasonably request, (ii) the favorable opinion of ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇ & Finger, P.A., special Delaware counsel for the Partnership, in form satisfactory to counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters to the effect set forth in Exhibit A-2 hereto and to such further effect as counsel to the Underwriters may reasonably request, (iii) the favorable opinion of Norton ▇▇▇▇ ▇▇▇▇▇▇▇▇▇ LLP, counsel for the Enbridge Parties, in form and substance satisfactory to counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters to the effect set forth in Exhibit A-3 hereto and to such further effect as counsel to the Underwriters may reasonably request and (iv) the favorable opinion of ▇▇▇▇▇ ▇▇▇▇▇▇▇, Vice President—Law and Assistant Secretary of the General Partner, in form and substance satisfactory to counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters to the effect set forth in Exhibit A-4 hereto and to such further effect as counsel to the Underwriters may reasonably request.

(c) Opinion of Counsel for Underwriters. At the Closing Time, the Representatives shall have received the favorable opinion, dated the Closing Time, of ▇▇▇▇▇ ▇▇▇▇▇ L.L.P., counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters with respect to such matters as the Representatives may require, in form and substance satisfactory to the Representatives.

(d) Officers’ Certificates. At the Closing Time, the Representatives shall have received a certificate of the chief executive officer or the president of the General Partner and of the chief financial or chief accounting officer of the General Partner, dated the Closing Time, to the effect that (i) since the date hereof or since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package or the Prospectus, there has not been a Material Adverse Effect, except as described in the Registration Statement, the General Disclosure Package and the Prospectus, (ii) the representations and warranties of the Enbridge Parties in this Agreement are true and correct with the same force and effect as though expressly made at and as of the Closing Time, (iii) the Enbridge Parties have complied with all agreements and satisfied all conditions on their part to be performed or satisfied at or prior to the Closing Time, and (iv) no stop order suspending the effectiveness of the Registration Statement under the 1933 Act has been issued, no order preventing or suspending the use of any preliminary prospectus or the Prospectus has been issued and no proceedings for any of those purposes have been instituted or are pending or, to the knowledge of the Enbridge Entities, contemplated.

(e) Chief Financial Officer’s Certificate. At the time of the execution of this Agreement and at the Closing Time, a certificate, in form and substance reasonably satisfactory to the Representatives, of the chief financial officer of the General Partner, in substantially the form attached hereto as Exhibit C.

(f) Accountant’s Comfort Letter. At the time of the execution of this Agreement, the Representatives shall have received from PricewaterhouseCoopers LLP a letter, dated such date, in form and substance satisfactory to the Representatives, together with signed or reproduced copies of such letter for each of the other Underwriters containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information contained in the Registration Statement, the General Disclosure Package and the Prospectus.

(g) Bring-down Comfort Letter. At the Closing Time, the Representatives shall have received from PricewaterhouseCoopers LLP a letter, dated as of the Closing Time, to the effect that they reaffirm the statements made in the letter furnished pursuant to subsection (e) of this Section, except that the specified date referred to shall be a date not more than three business days prior to the Closing Time.

(h) Approval of Listing. At the Closing Time, the Securities shall have been approved for listing on the New York Stock Exchange, subject only to official notice of issuance.

(i) No Objection. FINRA has confirmed that it has not raised any objection with respect to the fairness and reasonableness of the underwriting terms and arrangements relating to the offering of the Securities.

(j) Lock-up Agreements. At the date of this Agreement, the Representatives shall have received an agreement substantially in the form of Exhibit B hereto signed by the persons listed on Schedule C hereto.

(k) Maintenance of Rating. Since the execution of this Agreement, there shall not have been any decrease in or withdrawal of the rating of any securities of the Enbridge Parties by any “nationally recognized statistical rating organization” (as defined for purposes of Section 3(a)(62) of the ▇▇▇▇ ▇▇▇) or any notice given of any intended or potential decrease in or withdrawal of any such rating or of a possible change in any such rating that does not indicate the direction of the possible change.

(l) Formation Transactions. In connection with the sale of the Initial Securities at the Closing Time, the Formation Transactions shall have been duly consummated at the respective times and on the terms contemplated by this Agreement, the General Disclosure Package and the Prospectus and the Representatives shall have received such evidence that the Formation Transactions have been consummated as the Representatives may reasonably request.

(m) Conditions to Purchase of Option Securities. In the event that the Underwriters exercise their option provided in Section 2(b) hereof to purchase all or any portion of the Option Securities, the representations and warranties of the Enbridge Parties contained herein and the statements in any certificates furnished by any Enbridge Party and any of their respective subsidiaries hereunder shall be true and correct as of each Date of Delivery and, at the relevant Date of Delivery, the Representatives shall have received:

(i) Officers’ Certificates. Certificates, dated such Date of Delivery, signed on behalf of each of the Partnership Parties by the Chief Executive Officer or the President and the chief financial or chief accounting officer of the applicable Partnership Party confirming that the certificates delivered at the Closing Time pursuant to Section 5(d) hereof remains true and correct as of such Date of Delivery.

(ii) Opinion of Counsel for Enbridge Parties. If requested by the Representatives, the favorable opinion of each of (1) ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇ LLP, counsel for the Enbridge Parties, and (2) ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇ & Finger, P.A., special Delaware counsel for the Partnership, in form and substance satisfactory to counsel for the Underwriters, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinions required by Section 5(b) hereof.

(iii) Opinion of Counsel for Underwriters. If requested by the Representatives, the favorable opinion of ▇▇▇▇▇ ▇▇▇▇▇ L.L.P., counsel for the Underwriters, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Section 5(c) hereof.

(iv) Bring-down Comfort Letter. If requested by the Representatives, a letter from PricewaterhouseCoopers LLP, in form and substance satisfactory to the Representatives and dated such Date of Delivery, substantially in the same form and substance as the letter furnished to the Representatives pursuant to Section 5(f) hereof, except that the “specified date” in the letter furnished pursuant to this paragraph shall be a date not more than three business days prior to such Date of Delivery.

(n) Additional Documents. At the Closing Time and at each Date of Delivery (if any) counsel for the Underwriters shall have been furnished with such documents and opinions as they may require for the purpose of enabling them to pass upon the issuance and sale of the Securities as herein contemplated, or in order to evidence the accuracy of any of the representations or warranties, or the fulfillment of any of the conditions, herein contained; and all proceedings taken by the Enbridge Parties in connection with the issuance and sale of the Securities as herein contemplated shall be satisfactory in form and substance to the Representatives and counsel for the Underwriters.

(o) Termination of Agreement. If any condition specified in this Section shall not have been fulfilled when and as required to be fulfilled, this Agreement, or, in the case of any condition to the purchase of Option Securities on a Date of Delivery which is after the Closing Time, the obligations of the several Underwriters to purchase the relevant Option Securities, may be terminated by the Representatives by notice to the Partnership at any time at or prior to Closing Time or such Date of Delivery, as the case may be, and such termination shall be without liability of any party to any other party except as provided in Section 4 and except that Sections 1, 6, 7, 8, 14, 15 and 16 shall survive any such termination and remain in full force and effect.

SECTION 6. Indemnification.

(a) Indemnification of Underwriters. The Enbridge Parties, jointly and severally, agree to indemnify and hold harmless each Underwriter, its affiliates (as such term is defined in Rule 501(b) under the ▇▇▇▇ ▇▇▇) who have participated in the distribution of Common Units (each, an “Affiliate”), its selling agents and each person, if any, who controls any Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act as follows:

(i) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, arising out of any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement (or any amendment thereto), including the Rule 430A Information, or the omission or alleged omission therefrom of a material fact required to be stated therein or necessary to make the statements therein not misleading or arising out of any untrue statement or alleged untrue statement of a material fact included (A) in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto), or (B) in any materials or information provided to investors by, or with the approval of, the Enbridge Parties in connection with the marketing of the offering of the Common Units (“Marketing Materials”), including any roadshow or investor presentations made to investors by the Enbridge Parties (whether in person or electronically), or the omission or alleged omission in any preliminary prospectus, Issuer Free Writing Prospectus, Prospectus or in any Marketing Materials of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading;

(ii) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, to the extent of the aggregate amount paid in settlement of any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or of any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission; provided that (subject to Section 6(d) below) any such settlement is effected with the written consent of the Enbridge Parties;

(iii) against any and all expense whatsoever, as incurred (including the fees and disbursements of counsel chosen by ▇▇▇▇▇▇▇ ▇▇▇▇▇), reasonably incurred in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission, to the extent that any such expense is not paid under (i) or (ii) above;

provided, however, that this indemnity agreement shall not apply to any loss, liability, claim, damage or expense to the extent arising out of any untrue statement or omission or alleged untrue statement or omission made in the Registration Statement (or any amendment thereto), including the Rule 430A Information, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with the Underwriter Information.

(b) Indemnification of Enbridge Parties, Directors and Officers. Each Underwriter severally agrees to indemnify and hold harmless each of the Enbridge Parties and each of the directors and officers of the General Partner who signed the Registration Statement, and each person, if any, who controls the Partnership within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act, against any and all loss, liability, claim, damage and expense described in the indemnity contained in subsection (a) of this Section, as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Registration Statement (or any amendment thereto), including the Rule 430A Information, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with the Underwriter Information.

(c) Actions against Parties; Notification. Each indemnified party shall give notice as promptly as reasonably practicable to each indemnifying party of any action commenced against it in respect of which indemnity may be sought hereunder, but failure to so notify an indemnifying party shall not relieve such indemnifying party from any liability hereunder to the extent it is not materially prejudiced as a result thereof and in any event shall not relieve it from any liability which it may have otherwise than on account of this indemnity agreement. In the case of parties indemnified pursuant to Section 6(a) above, counsel to the indemnified parties shall be selected by ▇▇▇▇▇▇▇ ▇▇▇▇▇, and, in the case of parties indemnified pursuant to Section 6(b) above, counsel to the indemnified parties shall be selected by the Enbridge Parties. An indemnifying party may participate at its own expense in the defense of any such action; provided, however, that counsel to the indemnifying party shall not (except with the consent of the indemnified party) also be counsel to the indemnified party. In no event shall the indemnifying parties be liable for fees and expenses of more than one counsel (in addition to any local counsel) separate from their own counsel for all indemnified parties in connection with any one action or separate but similar or related actions in the same jurisdiction arising out of the same general allegations or circumstances. No indemnifying party shall, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever in respect of which indemnification or contribution could be sought under this Section 6 or Section 7 hereof (whether or not the indemnified parties are actual or potential parties thereto), unless such settlement, compromise or consent (i) includes an unconditional release of each indemnified party from all liability arising out of such litigation, investigation, proceeding or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any indemnified party.

(d) Settlement without Consent if Failure to Reimburse. If at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, such indemnifying party agrees that it shall be liable for any settlement of the nature contemplated by Section 6(a)(ii) or settlement of any claim in connection with any violation referred to in Section 6(e) effected without its written consent if (i) such settlement is entered into more than 45 days after receipt by such indemnifying party of the aforesaid request, (ii) such indemnifying party shall have received notice of the terms of such settlement at least 30 days prior to such settlement being entered into and (iii) such indemnifying party shall not have reimbursed such indemnified party in accordance with such request prior to the date of such settlement.

(e) Indemnification for Reserved Securities. In connection with the offer and sale of the Reserved Securities, the Enbridge Parties, jointly and severally, agree to indemnify and hold harmless ▇▇▇▇▇▇▇ ▇▇▇▇▇, its Affiliates and selling agents and each person, if any, who controls any of the foregoing within the meaning of either Section 15 of the 1933 Act or Section 20 of the 1934 Act (collectively, the ▇▇▇▇▇▇▇ ▇▇▇▇▇ Parties”), from and against any and all loss, liability, claim, damage and expense (including, without limitation, any legal or other expenses reasonably incurred in connection with defending, investigating or settling any such action or claim), as incurred, (i) arising out of the violation of any applicable laws or regulations of foreign jurisdictions where Reserved Securities have been offered, (ii) arising out of any untrue statement or alleged untrue statement of a material fact contained in any prospectus wrapper or other material prepared by or with the consent of the Enbridge Parties for distribution to Invitees in connection with the offering of the Reserved Securities or caused by any omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, (iii) caused by the failure of any Invitee to pay for and accept delivery of Reserved Securities which have been orally confirmed for purchase by any Invitee by 8:00 A.M. (New York City time) on the first business day after the date of the Agreement or (iv) related to, or arising out of or in connection with, the offering of the Reserved Securities; provided that no indemnification shall be available under this section for any loss, liability, claim, damage or expense which shall have been finally judicially determined by a court of competent jurisdiction to have been caused primarily by the gross negligence or willful misconduct of the ▇▇▇▇▇▇▇ ▇▇▇▇▇ Parties.

SECTION 7. Contribution. If the indemnification provided for in Section 6 hereof is for any reason unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, liabilities, claims, damages or expenses referred to therein, then each indemnifying party shall contribute to the aggregate amount of such losses, liabilities, claims, damages and expenses incurred by such indemnified party, as incurred, (i) in such proportion as is appropriate to reflect the relative benefits received by the Partnership, on the one hand, and the Underwriters, on the other hand, from the offering of the Securities pursuant to this Agreement or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Enbridge Parties, on the one hand, and of the Underwriters, on the other hand, in connection with the statements or omissions, or in connection with any violation of the nature referred to in Section 6(e) hereof, which resulted in such losses, liabilities, claims, damages or expenses, as well as any other relevant equitable considerations.

The relative benefits received by the Enbridge Parties, on the one hand, and the Underwriters, on the other hand, in connection with the offering of the Securities pursuant to this Agreement shall be deemed to be in the same respective proportions as the total net proceeds from the offering of the Securities pursuant to this Agreement (before deducting expenses) received by the Enbridge Parties, on the one hand, and the total underwriting discount received by the Underwriters, on the other hand, in each case as set forth on the cover of the Prospectus, bear to the aggregate initial public offering price of the Securities as set forth on the cover of the Prospectus.

The relative fault of the Enbridge Parties, on the one hand, and the Underwriters, on the other hand, shall be determined by reference to, among other things, whether any such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Enbridge Parties or by the Underwriters and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission or any violation of the nature referred to in Section 6(e) hereof.

The Enbridge Parties and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 7 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section 7. The aggregate amount of losses, liabilities, claims, damages and expenses incurred by an indemnified party and referred to above in this Section 7 shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue or alleged untrue statement or omission or alleged omission.

Notwithstanding the provisions of this Section 7, no Underwriter shall be required to contribute any amount in excess of the underwriting commissions received by such Underwriter in connection with the Securities underwritten by it and distributed to the public.

No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the ▇▇▇▇ ▇▇▇) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation.

For purposes of this Section 7, each person, if any, who controls an Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act and each Underwriter’s Affiliates and selling agents shall have the same rights to contribution as such Underwriter, and each director of the General Partner, each officer of the General Partner who signed the Registration Statement, and each person, if any, who controls the Partnership within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act shall have the same rights to contribution as the Enbridge Parties. The Underwriters’ respective obligations to contribute pursuant to this Section 7 are several in proportion to the number of Initial Securities set forth opposite their respective names in Schedule A hereto and not joint.

SECTION 8. Representations, Warranties and Agreements to Survive. All representations, warranties and agreements contained in this Agreement or in certificates of officers of the Enbridge Parties or any of their respective subsidiaries submitted pursuant hereto, shall remain operative and in full force and effect regardless of (i) any investigation made by or on behalf of any Underwriter or its Affiliates or selling agents, any person controlling any Underwriter, its officers or directors or any person controlling any Enbridge Party and (ii) delivery of and payment for the Securities.

SECTION 9. Termination of Agreement.

(a) Termination. The Representatives may terminate this Agreement, by notice to the Partnership, at any time at or prior to the Closing Time (i) if there has been, in the judgment of the Representatives, since the time of execution of this Agreement or since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package or the Prospectus, any material adverse change in the condition, financial or otherwise, or in the earnings, business affairs or

business prospects of the Partnership Parties and their respective subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business, or (ii) if there has occurred any material adverse change in the financial markets in the United States or the international financial markets, any outbreak of hostilities or escalation thereof or other calamity or crisis or any change or development involving a prospective change in national or international political, financial or economic conditions, in each case the effect of which is such as to make it, in the judgment of the Representatives, impracticable or inadvisable to proceed with the completion of the offering or to enforce contracts for the sale of the Securities, or (iii) if trading in any securities of the Partnership has been suspended or materially limited by the Commission or the New York Stock Exchange, or (iv) if trading generally on the New York Stock Exchange or in the Nasdaq Global Market has been suspended or materially limited, or minimum or maximum prices for trading have been fixed, or maximum ranges for prices have been required, by any of said exchanges or by order of the Commission, FINRA or any other governmental authority, or (v) a material disruption has occurred in commercial banking or securities settlement or clearance services in the United States or with respect to Clearstream or Euroclear systems in Europe, or (vi) if a banking moratorium has been declared by either Federal or New York authorities.

(b) Liabilities. If this Agreement is terminated pursuant to this Section, such termination shall be without liability of any party to any other party except as provided in Section 4 hereof, and provided further that Sections 1, 6, 7, 8, 14, 15 and 16 shall survive such termination and remain in full force and effect.

SECTION 10. Default by One or More of the Underwriters. If one or more of the Underwriters shall fail at the Closing Time or a Date of Delivery to purchase the Securities which it or they are obligated to purchase under this Agreement (the “Defaulted Securities”), the Representatives shall have the right, within 24 hours thereafter, to make arrangements for one or more of the non-defaulting Underwriters, or any other underwriters, to purchase all, but not less than all, of the Defaulted Securities in such amounts as may be agreed upon and upon the terms herein set forth; if, however, the Representatives shall not have completed such arrangements within such 24-hour period, then:

(i) if the number of Defaulted Securities does not exceed 10% of the number of Securities to be purchased on such date, each of the non-defaulting Underwriters shall be obligated, severally and not jointly, to purchase the full amount thereof in the proportions that their respective underwriting obligations hereunder bear to the underwriting obligations of all non-defaulting Underwriters, or

(ii) if the number of Defaulted Securities exceeds 10% of the number of Securities to be purchased on such date, this Agreement or, with respect to any Date of Delivery which occurs after the Closing Time, the obligation of the Underwriters to purchase, and the Partnership to sell, the Option Securities to be purchased and sold on such Date of Delivery shall terminate without liability on the part of any non-defaulting Underwriter.

No action taken pursuant to this Section shall relieve any defaulting Underwriter from liability in respect of its default.

In the event of any such default which does not result in a termination of this Agreement or, in the case of a Date of Delivery which is after the Closing Time, which does not result in a termination of the obligation of the Underwriters to purchase and the Partnership to sell the relevant Option Securities, as the case may be, either the (i) Representatives or (ii) the Partnership shall have the right to postpone Closing Time or the relevant Date of Delivery, as the case may be, for a period not exceeding seven days in order to effect any required changes in the Registration Statement, the General Disclosure Package or the Prospectus or in any other documents or arrangements. As used herein, the term “Underwriter” includes any person substituted for an Underwriter under this Section 10.

SECTION 11. Notices. All notices and other communications hereunder shall be in writing and shall be deemed to have been duly given if mailed or transmitted by any standard form of telecommunication. Notices to the Underwriters shall be directed to c/o Merrill ▇▇▇▇▇ at ▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇, attention of Syndicate Department (facsimile: (▇▇▇) ▇▇▇-▇▇▇▇), with a copy to ECM Legal (facsimile: (▇▇▇) ▇▇▇-▇▇▇▇); notices to the Enbridge Parties shall be directed to the office of the General Partner, at ▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇, ▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇▇▇▇▇, Attention: E. ▇▇▇▇▇ ▇▇▇▇▇▇▇, Assistant Secretary.

SECTION 12. No Advisory or Fiduciary Relationship. Each Enbridge Party acknowledges and agrees that (a) the purchase and sale of the Securities pursuant to this Agreement, including the determination of the initial public offering price of the Securities and any related discounts and commissions, is an arm’s-length commercial transaction between the Enbridge Parties, on the one hand, and the several Underwriters, on the other hand, (b) in connection with the offering of the Securities and the process leading thereto, each Underwriter is and has been acting solely as a principal and is not the agent or fiduciary of any Enbridge Party, any of their respective subsidiaries or their respective stockholders, creditors, employees or any other party, (c) no Underwriter has assumed or will assume an advisory or fiduciary responsibility in favor of any Enbridge Party with respect to the offering of the Securities or the process leading thereto (irrespective of whether such Underwriter has advised or is currently advising any Enbridge Party or any of its subsidiaries on other matters) and no Underwriter has any obligation to any Enbridge Party with respect to the offering of the Securities except the obligations expressly set forth in this Agreement, (d) the Underwriters and their respective affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Enbridge Parties and (e) the Underwriters have not provided any legal, accounting, regulatory or tax advice with respect to the offering of the Securities and the Enbridge Parties have consulted their own respective legal, accounting, regulatory and tax advisors to the extent they deemed appropriate.

SECTION 13. Parties. This Agreement shall each inure to the benefit of and be binding upon the Underwriters and the Enbridge Parties and their respective successors. Nothing expressed or mentioned in this Agreement is intended or shall be construed to give any person, firm or corporation, other than the Underwriters and the Enbridge Parties and their respective successors and the controlling persons and officers and directors referred to in Sections 6 and 7 and their heirs and legal representatives, any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained. This Agreement and all conditions and provisions hereof are intended to be for the sole and exclusive benefit of the Underwriters and the Enbridge Parties and their respective successors, and said controlling persons and officers and directors and their heirs and legal representatives, and for the benefit of no other person, firm or corporation. No purchaser of Securities from any Underwriter shall be deemed to be a successor by reason merely of such purchase.

SECTION 14. Trial by Jury. Each Enbridge Party (on its behalf and, to the extent permitted by applicable law, on behalf of its equityholders and affiliates) and each of the Underwriters hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby.

SECTION 15. GOVERNING LAW. THIS AGREEMENT AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF, THE STATE OF NEW YORK WITHOUT REGARD TO ITS CHOICE OF LAW PROVISIONS.

SECTION 16. Consent to Jurisdiction; Waiver of Immunity. Any legal suit, action or proceeding arising out of or based upon this Agreement or the transactions contemplated hereby shall be instituted in (i) the federal courts of the United States of America located in the City and County of New York, Borough of Manhattan or (ii) the courts of the State of New York located in the City and County of New York, Borough of Manhattan (collectively, the “Specified Courts”), and each party irrevocably submits to the exclusive jurisdiction (except for proceedings instituted in regard to the enforcement of a judgment of any such court, as to which such jurisdiction is non-exclusive) of such courts in any such suit, action or proceeding. Service of any process, summons, notice or document by mail to such party’s address set forth above shall be effective service of process for any suit, action or other proceeding brought in any such court. The parties irrevocably and unconditionally waive any objection to the laying of venue of any suit, action or other proceeding in the Specified Courts and irrevocably and unconditionally waive and agree not to plead or claim in any such court that any such suit, action or other proceeding brought in any such court has been brought in an inconvenient forum.

SECTION 17. TIME. TIME SHALL BE OF THE ESSENCE OF THIS AGREEMENT. EXCEPT AS OTHERWISE SET FORTH HEREIN, SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.

SECTION 18. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts shall together constitute one and the same Agreement.

SECTION 19. Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction hereof.

If the foregoing is in accordance with your understanding of our agreement, please sign and return to the Partnership a counterpart hereof, whereupon this instrument, along with all counterparts, will become a binding agreement among the Underwriters and the Enbridge Parties in accordance with its terms.



Very truly yours,

ENBRIDGE ENERGY PARTNERS, L.P.

By:		Enbridge Energy Management, L.L.C., as delegate of Enbridge Energy Company, Inc., as general partner

By:		/s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Title: Vice President—Law and Assistant Secretary

MIDCOAST ENERGY PARTNERS, L.P.

By:		Midcoast Holdings, L.L.C.,
		as general partner

By:		/s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Title: Vice President—Law and Assistant Secretary

MIDCOAST HOLDINGS, L.L.C.

By:		/s/ ▇▇▇▇▇ Katison
		Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Title: Vice President—Law and Assistant Secretary

[Signature Page to Underwriting Agreement]


MIDCOAST OPERATING, L.P.

By:		Enbridge Energy Management, L.L.C., as delegate of Enbridge Energy Company, Inc., as general partner of Enbridge Energy Partners, L.P., as the sole member of Midcoast OLP GP, L.L.C., as general partner

By:		/s/ ▇▇▇▇▇ Katison
		Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Title: Vice President—Law and Assistant Secretary

MIDCOAST OLP GP, L.L.C.

By:		Enbridge Energy Management, L.L.C., as delegate of Enbridge Energy Company, Inc., as general partner of Enbridge Energy Partners, L.P., as the sole member

By:		/s/ ▇▇▇▇▇ Katison
		Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Title: Vice President—Law and Assistant Secretary


CONFIRMED AND ACCEPTED, as of the date first above written: ▇▇▇▇▇▇▇ LYNCH, PIERCE, ▇▇▇▇▇▇ & ▇▇▇▇▇ INCORPORATED BARCLAYS CAPITAL INC. CITIGROUP GLOBAL MARKETS INC. ▇▇▇▇▇▇▇ LYNCH, PIERCE, ▇▇▇▇▇▇ & ▇▇▇▇▇ INCORPORATED

By		/s/ ▇▇▇▇ ▇▇▇▇▇
		Authorized Signatory

BARCLAYS CAPITAL INC.

By		/s/ ▇▇▇▇▇▇▇▇ ▇▇▇▇
		Authorized Signatory

CITIGROUP GLOBAL MARKETS

By		/s/ ▇▇▇▇▇▇ ▇▇▇▇▇
		Authorized Signatory

For themselves and as Representatives of the other Underwriters named in Schedule A hereto.

[Signature Page to Underwriting Agreement]

SCHEDULE A

The initial public offering price per Class A Common Unit for the Securities shall be $18.00.

The purchase price per Class A Common Unit for the Securities to be paid by the several Underwriters shall be $16.92, being an amount equal to the initial public offering price set forth above less $1.08 per Class A Common Unit, subject to adjustment in accordance with Section 2(b) for distributions declared by the Partnership and payable on the Initial Securities but not payable on the Option Securities.


Name of Underwriter	Number of Initial Securities
▇▇▇▇▇▇▇ Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇ Incorporated		6,475,000
Barclays Capital Inc.		1,850,000
Citigroup Global Markets Inc.		1,850,000
Credit Suisse Securities (USA) LLC		1,110,000
Deutsche Bank Securities Inc.		1,110,000
▇▇▇▇▇▇▇, Sachs & Co.		1,110,000
▇.▇. ▇▇▇▇▇▇ Securities LLC		1,110,000
▇▇▇▇▇▇ ▇▇▇▇▇▇▇ & Co. LLC		1,110,000
▇▇▇▇▇ Fargo Securities, LLC		1,110,000
UBS Securities LLC		1,110,000
RBS Securities Inc.		185,000
SMBC Nikko Securities America, Inc		185,000
Ladenburg ▇▇▇▇▇▇▇▇ & Co. Inc.		185,000
Total		18,500,000

Sch A-1

SCHEDULE B-1

Pricing Terms

1. The Partnership is selling 18,500,000 Class A Common Units.

2. The Partnership has granted an option to the Underwriters, severally and not jointly, to purchase up to an additional 2,775,000 Class A Common Units.

3. The initial public offering price per Class A Common Unit shall be $18.00.

Sch B - 1

SCHEDULE B-2

Free Writing Prospectuses

None

Sch B - 1

SCHEDULE C

List of Persons and Entities Subject to Lock-up

Enbridge Energy Partners, L.P.

Enbridge Energy Management, L.L.C.

Midcoast Holdings, L.L.C.

▇▇▇▇ ▇. ▇▇▇▇

▇▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇

▇▇▇▇▇ ▇. ▇▇▇

E. ▇▇▇▇▇ ▇▇▇▇▇▇▇

▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇

▇▇▇▇▇ ▇. ▇▇▇▇▇▇

▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇

▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇

▇▇▇▇ ▇▇▇▇▇▇

▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇

▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇

▇▇▇ ▇▇▇▇▇▇▇▇▇

J. ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇

Sch C - 1

Exhibit A-1

FORM OF OPINION OF ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇ LLP

TO BE DELIVERED PURSUANT TO SECTION 5(b)(i)

[To be provided to the underwriters]

▇-▇

▇▇▇▇▇▇▇ ▇-▇

FORM OF OPINION OF ▇▇▇▇▇▇▇▇, ▇▇▇▇▇▇ & FINGER, P.A.

TO BE DELIVERED PURSUANT TO SECTION 5(b)(ii)

[To be provided to the underwriters]

▇-▇

▇▇▇▇▇▇▇ ▇-▇

FORM OF OPINION OF NORTON ▇▇▇▇ ▇▇▇▇▇▇▇▇▇ LLP

TO BE DELIVERED PURSUANT TO SECTION 5(b)(iii)

[To be provided to the underwriters]

▇-▇

▇▇▇▇▇▇▇ ▇-▇

FORM OF OPINION OF ▇▇▇▇▇ ▇▇▇▇▇▇▇

TO BE DELIVERED PURSUANT TO SECTION 5(b)(iv)

[To be provided to the underwriters]

A-4

[Form of lock-up]

Exhibit B

▇▇▇▇▇▇▇ Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇

Incorporated

as Representative of the several

Underwriters to be named in the

within mentioned Underwriting Agreement

c/o Merrill Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇

Incorporated

▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇

▇▇▇ ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇

Re:

Proposed Public Offering by Midcoast Energy Partners, L.P.

Ladies and Gentlemen:

The undersigned understands that ▇▇▇▇▇▇▇ Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇ Incorporated (“▇▇▇▇▇▇▇ ▇▇▇▇▇”) proposes to enter into an Underwriting Agreement (the “Underwriting Agreement”) with Midcoast Energy Partners, L.P., a Delaware limited partnership (the “Partnership”), and Midcoast Holdings, L.L.C., a Delaware limited liability company and the general partner of the Partnership (the “General Partner”), and certain of their affiliates, providing for the public offering of Class A common units representing limited partner interests in the Partnership (the “Common Units”). In recognition of the benefit that such an offering will confer upon the undersigned, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the undersigned agrees with each underwriter to be named in the Underwriting Agreement that, during the period beginning on the date hereof and ending on the date that is 180 days from the date of the Underwriting Agreement (subject to extensions as discussed below), the undersigned will not, without the prior written consent of ▇▇▇▇▇▇▇ ▇▇▇▇▇, directly or indirectly, (i) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant for the sale of, or otherwise dispose of or transfer any Common Units or any securities convertible into or exchangeable or exercisable for Common Units, whether now owned or hereafter acquired by the undersigned or with respect to which the undersigned has or hereafter acquires the power of disposition (collectively, the “Lock-Up Securities”), or exercise any right with respect to the registration of any of the Lock-up Securities, or file or cause to be filed any registration statement in connection therewith, under the Securities Act of 1933, as amended, or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of the Lock-Up Securities, whether any such swap or transaction is to be settled by delivery of Common Units or other securities, in cash or otherwise.

Notwithstanding the foregoing, and subject to the conditions below, the undersigned may transfer the Lock-Up Securities without the prior written consent of ▇▇▇▇▇▇▇ ▇▇▇▇▇, provided that (1) ▇▇▇▇▇▇▇ ▇▇▇▇▇ receives a signed lock-up agreement for the balance of the lockup period from each donee, trustee, distributee, or transferee, as the case may be, (2) any such transfer shall not involve a disposition for

value, (3) such transfers are not required to be reported with the Securities and Exchange Commission on Form 4 in accordance with Section 16 of the Securities Exchange Act of 1934, as amended, and (4) the undersigned does not otherwise voluntarily effect any public filing or report regarding such transfers:

•

as a bona fide gift or gifts; or

•

to any trust for the direct or indirect benefit of the undersigned or the immediate family of the undersigned (for purposes of this lock-up agreement, “immediate family” shall mean any relationship by blood, marriage or adoption, not more remote than first cousin); or

•

as a distribution to limited partners or stockholders of the undersigned; or

•

to the undersigned’s affiliates or to any investment fund or other entity controlled or managed by the undersigned.

Furthermore, the undersigned may sell Common Units purchased by the undersigned on the open market following the public offering if and only if (i) such sales are not required to be reported in any public report or filing with the Securities Exchange Commission, or otherwise and (ii) the undersigned does not otherwise voluntarily effect any public filing or report regarding such sales.

Notwithstanding the foregoing, if:

(1) during the last 17 days of the 180-day lock-up period, the Partnership issues an earnings release or material news or a material event relating to the Partnership occurs; or

(2) prior to the expiration of the 180-day lock-up period, the Partnership announces that it will release earnings results or becomes aware that material news or a material event will occur during the 16-day period beginning on the last day of the 180-day lock-up period,

the restrictions imposed by this lock-up agreement shall continue to apply until the expiration of the 18-day period beginning on the issuance of the earnings release or the occurrence of the material news or material event, as applicable, unless ▇▇▇▇▇▇▇ ▇▇▇▇▇ waives, in writing, such extension.

The undersigned agrees that, prior to engaging in any transaction or taking any other action that is subject to the terms of this lock-up agreement during the period from the date of this lock-up agreement to and including the 34^th day following the expiration of the initial 180-day lock-up period, it will give notice thereof to the Partnership and will not consummate such transaction or take any such action unless it has received written confirmation from the Partnership that the 180-day lock-up period (as may have been extended pursuant to the previous paragraph) has expired.

The undersigned also agrees and consents to the entry of stop transfer instructions with the Partnership’s transfer agent and registrar against the transfer of the Lock-Up Securities except in compliance with the foregoing restrictions.


Very truly yours,

Signature:
Name:

Exhibit D

PRINCIPAL FINANCIAL OFFICER’S CERTIFICATE

November , 2013

The undersigned, ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇, Vice President—Finance of Midcoast Holdings, L.L.C., a Delaware limited liability company (the “General Partner”) and the general partner of Midcoast Energy Partners, L.P., a Delaware limited partnership (the “Partnership”), in connection with the offering and sale by the Partnership of Class A common units representing limited partner interests in the Partnership (the “Units”), pursuant to (i) a registration statement on Form S-1 (Registration No. 333-189341) initially filed with the Securities and Exchange Commission (the “Commission”) on June 14, 2013 (as amended to date, the “Registration Statement”), (ii) a preliminary prospectus dated October 31, 2013 (the “Preliminary Prospectus”) filed with the Commission pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Act”), and (iii) the Underwriting Agreement dated as of the date hereof by and among the Partnership, the General Partner, Midcoast Operating, L.P., a Texas limited partnership, Midcoast OLP GP, L.L.C., a Delaware limited liability company, Enbridge Energy Partners, L.P., a Delaware limited partnership, and ▇▇▇▇▇▇▇ Lynch, Pierce, ▇▇▇▇▇▇ & ▇▇▇▇▇ Incorporated, Barclays Capital Inc. and Citigroup Global Markets Inc., for themselves and as representatives of the other underwriters named therein (the “Underwriters”), hereby certifies that, as of the date hereof:

(i) I am the duly elected, qualified and acting Vice President—Finance of the General Partner and am providing this certificate to the Underwriters, in my capacity as an officer of the General Partner and not individually, based on my examination of the Partnership’s preliminary financial records, analyses, schedules and other documents.

(ii) No consolidated financial statements of the Partnership as of any date or for any period subsequent to June 30, 2013 are available.

(iii) I supervised the compilation and review of the circled information contained in the attached Exhibit 1 (the “Preliminary Information”), which Preliminary Information is included in the Preliminary Prospectus and which otherwise has not been confirmed by PricewaterhouseCoopers LLP, and which Preliminary Information was prepared in good faith and based upon assumptions that I believe are reasonable and consistent with the operations of the Partnership in the ordinary course of business. To my knowledge, the Preliminary Information represents the Partnership’s current preliminary estimates based upon quarterly analysis, review and reconciliations of the Partnership’s financial accounts and records, which quarterly analysis, review and reconciliations have not yet been finalized. Furthermore, I supervised the comparison of such Preliminary Information as of or for the period indicated with the corresponding information shown in or derived from the Partnership’s accounting records and found them to be consistent and in agreement (except for differences caused by rounding).

(iv) The Preliminary Information is preliminary and subject to adjustments that may arise as a result of the completion of customary quarterly closing and review procedures and are inherently uncertain and subject to a wide variety of significant business, economic and competitive risks.

This certificate is to assist the Underwriters in conducting and documenting their investigation of the affairs of the Partnership in connection with the offering of the Units covered by the Registration Statement and the Preliminary Prospectus.

MIDCOAST ENERGY PARTNERS, L.P. 18,500,000 Class A Common Units Representing Limited Partner Interests UNDERWRITING AGREEMENT

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