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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

Connections of Wind Farms to Irish Grid Blocked

LCG, Dec. 4, 2003--The intermittent nature of wind power production and the significant amount of planned growth of wind installations in Ireland has led a top regulator to halt further connections in order to insure reliable operations.

The decision was prompted in part by a letter to the regulator, Tom Reeves, from the managing director of ESB National Grid, Kieran O'Brien, in which O'Brien asked for emergency steps to be taken. "While these issues could be ignored with low levels of wind generation on the system, now that definitive plans are in place to significantly and rapidly increase the proportion of wind generation on the system, a number of complex technical issues relating to wind generation must be resolved," the letter stated.

Reeves said that he knew the decision would not be received well by executives of wind power production firms. He stated that he was "naturally reluctant to approve emergency type measures of this nature without any prior warning to the industry," but that a higher priority lay in "overall system reliability."

O'Brien asked that the technical issues should be fully researched before any new connections are approved. He wrote that the amount of currently connected facilities and approved wind connection agreements "pose an increased risk to the security and stability of the power system which the transmission system operator feels exceeds the level normally likely to be accepted by a prudent system operator."
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