CX-016124: South-of-Allston Flow Congestion Relief Pilot Program: Generating Capacity Agreement with Transalta Energy Marketing, Inc.

As part of a two-year pilot program, CX: Bonneville Power Administration (BPA) proposes to purchase decremental generating capacity from Transalta Energy Marketing, Inc. (Transalta). Upon notice from BPA, Transalta would reduce generation at the Centralia coal-fired plant, which has two generating units and a total net capacity of 1,376 megawatts (MW). To achieve temporary summer-peak congestion relief along BPA’s South-of-Allston (SOA) transmission path during the pilot program, CX: BPA plans to pair these generation reductions with third-party thermal-generation increases, distributed-generation increases, and demand-response load reductions located south of the SOA path.