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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

SDG&E and AES Showcase New Battery Storage Facilities

LCG, March 3, 2017--AES Energy Storage, a subsidiary of The AES Corporation,recently showcased two new Advancion® battery-based energy storage sites, totaling 37.5 MW, in partnership with San Diego Gas & Electric (SDG&E).

"California has created the launchpad for energy storage adoption on a global scale," said the President of AES Energy Storage. "By prioritizing storage to address real system needs today, SDG&E is leading the way, creating a sustainable model that others can follow to achieve a clean, unbreakable grid."

The larger site is located at a SDG&E substation in Escondido, California, where it hosts a 30 MW, four-hour duration energy storage project that is the world's largest lithium ion battery-based energy storage installation, according to AES. The energy storage facility is capable of storing the energy equivalent of serving 20,000 customers for four hours. The 400,000 batteries, similar to those in electric vehicles, were installed in nearly 20,000 modules and placed in 24 containers.

The second site is located at a SDG&E substation in El Cajon. Together, the arrays will provide enough capacity to power approximately 25,000 homes for four hours. Both arrays incorporate components from Advancion-certified suppliers, including batteries by Samsung SDI and power conversion systems by Parker Hannifin.

SDG&E and AES announced plans to proceed with two energy storage arrays last August, following the approval by the California Public Utilities Commission (CPUC) of the proposal by SDG&E to build the projects. In May 2016, the CPUC directed Southern California electric utilities to accelerate the installation of new energy storage options to enhance regional energy reliability and enable the addition of more intermittent renewable energy resources.

The CPUC requires SDG&E to procure a total of 165 MW of energy storage by 2020 that is to be operational by 2024.
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