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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

Arrowhead-Weston Transmission Project Moves Forward

LCG, August 27, 2004--The Marathon County Board approved a proposal from American Transmission Company (ATC) to allow a new, 345-kV transmission line through a county-owned recreational area. The overall Arrowhead-Weston line between Hermantown and Wausau will extend 220 miles and is estimated to cost $420 million. The plan calls for completion of the project by 2008. Similar land use agreements will be required with other counties, plus about 850 landowners in Wisconsin and Minnesota.

The Wisconsin Public Service Commission last year approved construction of the Arrowhead-Weston line. Utilities, including Wisconsin Public Service Corp. and Minnesota Power, say it is needed to improve electric reliability. Furthermore, with locational marginal pricing (LMP) to be introduced next year by the Midwest ISO, the additional transmission capacity will tend to reduce locational price volatility.

Earlier this year, Minnesota Power started work on the Hermantown to St. Louis River section and plans to complete the 12-mile segment by early 2005.

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