EXHIBIT 99.250
ABB
August 6, 1998
Mr. ▇▇▇▇▇ ▇▇▇▇▇▇▇
▇▇▇▇▇ Systems Corporation
▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇
▇▇▇, ▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇
Dear ▇▇. ▇▇▇▇▇▇▇:
Enclosed for your information and records is an original copy of the Letter
Agreement (including attachments) to performance of Stage I of the Independent
System Operator Scheduling Applications, Scheduling Infrastructure and Business
Systems Contract (the "Contract") and an original copy of the Contract
Modification to Implement Stage II to the Independent System Operator Scheduling
Applications, Scheduling Infrastructure and Business Systems Contract. The
signatures on the originals (▇▇▇▇▇ ▇▇▇▇▇▇▇▇ of ABB Power T&D Company and ▇▇▇▇▇
▇▇▇▇▇▇ of the California ISO) are dated 31 July 1998.
Sincerely,
/s/ ▇▇▇▇▇ ▇▇▇▇
▇▇▇▇▇ ▇▇▇▇
Contracts Manager
/mc
--------------------------------------------------------------------------------
ABB Information Systems 2550 ▇▇▇▇▇ Ave., Santa Clara, CA ▇▇▇▇▇ (▇▇▇) ▇▇▇-▇▇▇▇
Fax (▇▇▇) ▇▇▇-▇▇▇▇