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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

ERCOT reviewed Frio County Transmission Project

June 18, 2020 - In November 2019, 7X Energy submitted the Frio County Transmission Project to the ERCOT Regional Planning Group (RPG) as an economic-driven project to address projected transmission congestion in the Frio County area. This is supported by an independent economic benefit study performed by LCG Consulting using its proprietary UPLAN model, the same economic planning model utilized by ERCOT, in accordance with ERCOT procedures. LCG’s analysis shows significant annual production cost benefit for the transmission upgrades in question.

In the independent review completed in May 2020, ERCOT identified transmission congestion on the 69-kV and 138-kV transmission system in Frio County, and a total of seven transmission upgrade options were evaluated. ERCOT concluded that the upgrades identified in Option 5 would provide the most cost-effective solution to the identified congestion while meeting the ERCOT economic planning criteria. Option 5 is estimated to cost $12.13 million and is described as follows:
  • Rebuild the Moore – Big Foot 138-kV line such that the summer normal and emergency ratings are at least 485 MVA

  • Reconductor the Moore – Hondo Creek 138-kV line such that the summer normal and emergency ratings are at least 382 MVA

The recommended option is classified as a Tier 2 project based on the ERCOT Protocol Section 3.11.4.3(2), and the project is expected to be in-service by Summer 2021.
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