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TerraPower Announces Start of Construction on First Utility-Scale Advanced Nuclear Plant in Wyoming

LCG, April 23, 2026--TerraPower announced today the official start of construction on its Kemmerer Unit 1 nuclear power plant, which could be the first utility-scale advanced nuclear power plant in the United States. In early March, the Nuclear Regulatory Commission (NRC) announced that it had authorized the staff to issue a construction permit for Unit 1 commercial nuclear power plant in Kemmerer, Wyoming.

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TVA Announces Two Energy Storage Agreements Totaling 425 MW/1,700 MWh

LCG, April 22, 2026--The Tennessee Valley Authority (TVA) yesterday announced two new, 20-year agreements for a 225 MW/900 MWh battery energy storage system (BESS) project in East Tennessee and for a 200 MW/800 MWh BESS project in northern Alabama. Both projects are planned to commence commercial operations in 2029.

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Industry News

Midwest ISO Continues to Evanesce

LCG, June 15, 2001The Midwest Independent System Operator, which a year ago claimed to be the nation's largest, continues to wither. Yesterday, the shrinking ISO said it has notified the Mid-America Interconnected Network that an agreement reached last September for the two organizations to integrate certain functions has been rendered irrelevant.

MAIN is one of 10 regional councils of the North American Electric Reliability Council, an industry-sponsored organization responsible for operating procedures and protocols that govern the nation's transmission grid.

In a letter to the chairman of MAIN's executive committee, James P. Torgerson, chief executive of the Midwest ISO, said that because Commonwealth Edison Co., Illinois Power Co. and Ameren Corp. are no longer members of the Midwest ISO the rationale for continuing the agreement no longer exists.

Under terms of last year's memorandum of understanding, the Midwest ISO was to have integratedvarious MAIN functions and personnel into the Midwest ISO. However, because the Midwest ISO will not be assuming security coordination and transmission operational control over all MAIN member transmission systems as originally anticipated, the MOU is no longer valid, the letter explains.

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