Common use of SCOPE OF WORK AND RESPONSIBILITIES Clause in Contracts

SCOPE OF WORK AND RESPONSIBILITIES. 1. Interconnection Customer’s Scope of Work and Responsibilities The Interconnection Customer’s Interconnection Facilities described in this Section D.1 shall be designed, constructed, operated and maintained by the Interconnection Customer in accordance with industry standards and specifications and the Connecting Transmission Owner’s (“CTO”) Electric System Bulletins (“ESBs”) which are available at: The Interconnection Customer shall submit all engineering design and electrical specifications associated with the Interconnection Customer Interconnection Facilities and any modifications to the Small Generating Facility, to the CTO for review and written acceptance in accordance with the ESBs. Interconnection Customer shall coordinate activities with the Connecting Transmission Owner to ensure the Connecting Transmission Owner may proceed with the requested reviews, testing and approvals. These activities and requirements may include, but may not be limited to, up-front costs, performance agreements, rights of way, and site suitability prior to any potential relocation of Connecting Transmission Owner’s existing facilities and installation of new facilities, as necessary. Interconnection Customer will submit a full set of technical submittals as outlined by ESB 751, as modified by Exhibit E of the “National Grid Electric Service Plan – Dahowa Hydro 34.5 kV Substation Upgrade, dated May 1, 2019.”, included herewith as Attachment 8. In addition to these technical submittals, the Project will need to comply with the following specific measures: The new proposed recloser shall be installed by Interconnection Customer as soon as practical to allow the facility to operate with proper service equipment (means of disconnection and overcurrent protection). Therefore, this installation may occur prior to final approvals of the remainder of the technical submittals and equipment installations. The new recloser shall be equipped with capacitive voltage sensing in its primary 34.5kV termination bushings. These sensors shall be configured to provide 3Vo protection, through a relay, PLC, or similar, and shall be demonstrated on the Functional Electrical Drawings (single line, three line, and breaker controls drawings) as described in ESB 751. Although the facility appears to have a robust 3Vo scheme with voltage sensing on the generator-side of the recloser, the proposed functionality (capacitive voltage sensing in recloser 34.5kV bushings) will provide line to ground detection during periods when the recloser is “open”. This detection of a line to ground condition when the recloser is in the open position will result in the lock-out of the recloser. When the recloser is “closed” and operating in normal conditions, the existing 3Vo system may be employed to detect line to ground conditions. The capacitive voltage sensors shall be configured as a redundant 3Vo scheme under this condition. This arrangement shall be clearly described within the control drawings required by ESB 751. Manufacturer’s drawings, including schematic circuit drawings, nameplate ratings and physical data shall be provided for the Company’s review. The 34.5kV side arresters were previously reviewed by Connecting Transmission Owner during the review of the newly proposed recloser. The Connecting Transmission Owner-accepted 36kV/27kV MCOV station class arresters will be installed by Interconnection Customer within the recloser cabinet and must be reflected in the functional electrical drawings as required by ESB 751.

SCOPE OF WORK AND RESPONSIBILITIES. 1. Interconnection Customer’s Scope of Work and Responsibilities The Interconnection Customer’s Interconnection Facilities described As agreed upon by the Parties pursuant to Article 5.2 of this Agreement, the SASUFs referenced above in this Section D.1 shall B and the Other SUFs at the Little Pond Station referenced above in Section C(i) will be designed, constructedprocured, operated and maintained constructed by the Interconnection Customer Customer, subject to Connecting Transmission Owner’s review and approval, and in accordance with industry standards and specifications and the Connecting Transmission Owner’s (“specifications and all applicable codes and standards, to the extent not inconsistent with NYISO Tariffs or procedures. • Testing and commissioning requirements for SASUF to be completed by Interconnection Customer based on testing requirements provided by CTO”) Electric System Bulletins (“ESBs”) which are available at: . • Establishment of a means of communication between the protective devices at the new Little Pond Station and the remote ends ▇▇▇▇▇▇▇▇▇ Station, Mongaup Station, and Cuddebackville Station. • Connecting Transmission Owner will procure and install security equipment at the Little Pond Station. Interconnection Customer is responsible for facilitating the infrastructure required for the security system. Cost of the Connecting Transmission Owner Security system to be reimbursed by Interconnection Customer. • Multiple outages may be required for the transmission work. Interconnection Customer shall be responsible for the reasonable cost associated with any additional work required for service continuity in accordance with Good Utility Practice, provided however that Connecting Transmission Owner shall provide Interconnection Customer an estimate of the cost of such additional work prior to scheduling of any outage requiring such work. All switching to be performed by Connecting Transmission Owner. • The Interconnection Customer shall submit be responsible for performing short circuit studies using the latest NYISO ASPEN case and developing relay settings as per Connecting Transmission Owner’s protection specifications at the SASUF. The Connecting Transmission Owner shall review and approve the short circuit study and relay settings files prior to start of testing and commissioning at SASUF. The Interconnection Customer shall provide a list of all the analog and digital points that will be connected to the RTU. The Connecting Transmission Owner engineering team will provide the setting files for the RTU devices only. The testing and commissioning from the RTU to the field devices will be performed by Interconnection Customer. The Communication testing of RTU to Connecting Transmission Owner’s O&R Energy Control Center shall be performed by Connecting Transmission Owner staff. • The Interconnection Customer shall be responsible for the design and electrical specifications associated with construction of the Interconnection Customer Interconnection Facilities stormwater management system (the “Stormwater System”) and any modifications to for maintenance of the Stormwater System until the Commercial Operation Date of the Small Generating Facility. On and after the Commercial Operation Date of the Small Generating Facility, the Connecting Transmission Owner shall be responsible for the operation and maintenance of the Stormwater System, as noted below, provided that (i) the design for the Stormwater System shall be subject to the CTO for review, comment, and acceptance of the Connecting Transmission Owner prior to submittal to the applicable municipality in connection with permitting, and any changes to such design shall be subject to the prior review, comment and acceptance by the Connecting Transmission Owner, (ii) the internal and external costs of the Connecting Transmission Owner attributable to its review and written acceptance comment described in subsection (i) of this paragraph shall be reimbursed by the Interconnection Customer within 30 days of receipt of invoice, (iii) the Stormwater System shall be constructed in accordance with the ESBs. design accepted by the Connecting Transmission Owner, (iv) the Connecting Transmission Owner shall only be responsible for the operation and maintenance of the Stormwater System to the extent located within the Little Pond Station Parcel or along the access road from the public road to the Little Pond Station Parcel, and shall not be responsible for the operation or maintenance of the Stormwater System in other locations, including, without limitation, to the extent located inside of the Little Pond Solar Collector Substation yard or in the solar field, (v) any Stormwater System maintenance agreement contemplated with the applicable municipality shall be subject to the review, comment, and acceptance by the Connecting Transmission Owner prior to execution by the Interconnection Customer and the applicable municipality, and a copy of such fully executed agreement shall coordinate activities with be provided to the Connecting Transmission Owner promptly upon its execution, (vi) the Little Pond Station Easement shall provide for the Connecting Transmission Owner’s obligations relating to the Stormwater System, including, without limitation, the grant of easement rights for the Connecting Transmission Owner to ensure comply with such obligations and (vii) the Connecting Transmission Owner may proceed with the requested reviews, testing and approvals. These activities and requirements may include, but may shall not be limited to, up-front costs, performance agreements, rights of way, and site suitability prior liable for storm or stormwater damage or other damage to any potential relocation of Connecting Transmission Ownerthe Interconnection Customer’s existing facilities and installation of new facilities, as necessary. Interconnection Customer will submit a full set of technical submittals as outlined not caused by ESB 751, as modified by Exhibit E of the “National Grid Electric Service Plan – Dahowa Hydro 34.5 kV Substation Upgrade, dated May 1, 2019.”, included herewith as Attachment 8. In addition to these technical submittals, the Project will need to comply with the following specific measures: The new proposed recloser shall be installed by Interconnection Customer as soon as practical to allow the facility to operate with proper service equipment (means of disconnection and overcurrent protection). Therefore, this installation may occur prior to final approvals of the remainder of the technical submittals and equipment installations. The new recloser shall be equipped with capacitive voltage sensing in its primary 34.5kV termination bushings. These sensors shall be configured to provide 3Vo protection, through a relay, PLC, or similar, and shall be demonstrated on the Functional Electrical Drawings (single line, three line, and breaker controls drawings) as described in ESB 751. Although the facility appears to have a robust 3Vo scheme with voltage sensing on the generator-side of the recloser, the proposed functionality (capacitive voltage sensing in recloser 34.5kV bushings) will provide line to ground detection during periods when the recloser is “open”. This detection of a line to ground condition when the recloser is in the open position will result in the lock-out of the recloser. When the recloser is “closed” and operating in normal conditions, the existing 3Vo system may be employed to detect line to ground conditions. The capacitive voltage sensors shall be configured as a redundant 3Vo scheme under this condition. This arrangement shall be clearly described within the control drawings required by ESB 751. Manufacturer’s drawings, including schematic circuit drawings, nameplate ratings and physical data shall be provided for the Company’s review. The 34.5kV side arresters were previously reviewed by Connecting Transmission Owner during (including any water runoff that exceeds the review design capability of the newly proposed recloser. The Connecting Transmission Owner-accepted 36kV/27kV MCOV station class arresters will be installed by Interconnection Customer within the recloser cabinet and must be reflected in the functional electrical drawings as required by ESB 751Stormwater System).