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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

Ameren Announces New Nuclear Reactor Under Consideration at Callaway

LCG, December 6, 2005--Ameren Corporation announced late last week that it is evaluating the addition of another nuclear reactor at its Callaway Plant in Missouri.

Gary Rainwater, chief executive officer and president of Ameren Corporation, made the announcement last Thursday. According to Rainwater, the new reactor would cost about $2 billion and could commence operations in 2017, at the earliest. Ameren is currently exploring options for base load power stations, and a decision is expected in the next three years. A factor that favors nuclear power is that no greenhouse gases are emitted.

The existing Callaway Plant is a Standardized Nuclear Unit Power Plant System (SNUPPS) that uses a Westinghouse four-loop pressurized water reactor and a General Electric turbine-generator. The plant, located about twenty-five miles northeast of Jefferson City, went into service December 1984 and has a net generating capacity of 1,126 MW. The site was initially developed with the idea of adding a second unit in the future.

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