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AES Announces Construction Complete on 1,000-MW, Solar-Plus-Storage Project in California

LCG, June 11, 2025--The AES Corporation (AES) announced today that it has completed construction of the 1,000 MW Bellefield 1 project, which is under a 15-year contract with Amazon. Bellefield is a two-phase project, with each phase including 500 MW of solar plus 500 MW of a four-hour, battery energy storage system (BESS). When Phase II is completed in 2026, the total installed capacity will be 2,000 MW, and AES expects the total project will be the largest solar-plus-storage facility in the United States.

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Duke Energy Proposes to Build 1,400-MW Natural Gas-Fired Power Plant in South Carolina

LCG, June 9, 2025--Duke Energy announced today its intent to submit an application to the Public Service Commission of South Carolina (PSCSC) for approval to build a new natural gas combined-cycle generating facility with hydrogen capability in Anderson County, South Carolina. The company plans to submit the construction application to the PSCSC later this year. If approved, it expects construction would commence in summer 2027, with operations beginning by early 2031.

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Industry News

Midwest ISO and Southwest Power Pool Will Merge

LCG, Feb. 25, 2002--The directors of the Midwest Independent Transmission System Operator Inc. (ISO) and Southwest Power Pool Inc. (SPP) gave their approval to a merger of the two power transmission grid managers.

The resulting organization would have responsibility for transmission operations in twenty states and in the Canadian province of Manitoba. The Midwest ISO projects that it will submit required documents to FERC by March 15, and finalize the merger by the close of the second quarter.

The nonprofit Midwest ISO is currently negotiating with the for-profit Alliance RTO, following a December order from FERC for the two to merge, based on transmission bottlenecks that could persist if the two remained separate.

Some state representatives have asked for more justification for FERC's emphasis on the RTO concept. FERC, which is making the right of utilities to compete in deregulated power markets dependent on their membership in an RTO, will release a cost-benefit study next week, according to a spokesman.

Negotiations over the possible terms of a Midwest-Alliance merger were held up most recently when members of the Midwest ISO found Alliance's proposed transmission rates unacceptable. The Alliance RTOs members include Indiana Michigan Power Co., American Electric Power Co Inc., and Northern Indiana Public Service Co.
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