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NRC Renews Operating Licenses for Constellation's Nuclear Reactors at Clinton and Dresden Facilities

LCG, December 16, 2025--The Nuclear Regulatory Commission (NRC) announced today that it has renewed the operating licenses of Constellation LLC’s Clinton Unit 1 in Clinton, Illinois, and Dresden Units 2 and 3, near Morris, Illinois, for an additional 20 years beyond the current expiration dates. The combined capacity of these three, Illinois-based nuclear units is 2,925 MW, and the operating license extension will enable the units to generate carbon-free power through about 2050.

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ERCOT Announces Organizational Changes to Promote Grid Reliability, Rapid Demand Growth, and Innovation

LCG, December 12, 2025--Today, the Electric Reliability Council of Texas, Inc. (ERCOT) announced strategic organizational changes designed to accelerate innovation, strengthen grid reliability, and support the unprecedented growth in the demand for electricity across Texas. To meet these objectives, ERCOT created two new organizations: Interconnection and Grid Analysis, and Enterprise Data and Artificial Intelligence (AI). The two organizations will formally launch in January 2026.

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Industry News

Diesel Problems Keep Seabrook Off-line

LCG, Dec. 15, 2000--The 1,150 megawatt Seabrook nuclear power plant in southeastern New Hampshire shut down October 21 to refuel and was expected back on-line by November 21, but continuing problems with a back-up diesel generator have prevented a restart and it appears they will continue to do so, a minority owner of the plant said yesterday.

Bay Corp Holdings Ltd., the parent company for Great Bay Power Corp. and Little Bay Power Corp., said that repairs to the diesel had been expected to be accomplished by the middle of this month, but haven't been. When mechanics tested one of the diesel generators recently, they broke it.

Seabrook is mostly owned by Northeast Utilities subsidiary Public Service Co. of New Hampshire and is operated by North Atlantic Energy Service Corp. North Atlantic is now projecting that the plant will be returned to service at the end of January.

Bay Corp got out a news release to explain the outage is costing it a lot of money for replacement power it must purchase at high rates to cover the 174 megawatts it isn't getting from Seabrook.

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