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Minnesota PUC Approves Operations Extension for Xcel Energy's Prairie Island Nuclear Plant

LCG, August 15, 2025--Xcel Energy announced that the company received state approval yesterday from the Minnesota Public Utilities Commission to extend operations of the Prairie Island nuclear plant through the early 2050s. Prairie Island has two units that have a combined generating capacity of 1,100 MW. The units’ current operating licenses expire in 2033 and 2034.

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PGE Announces Addition of 475 MW of Battery Energy Storage Systems to Improve Grid Reliability and Costs

LCG, August 7, 2025--Portland General Electric (PGE) today announced the completion of three, four-hour lithium-ion utility-scale battery energy storage systems (BESS) in Oregon, adding 475 MW and more than 1.9 GWh of dispatchable capacity to serve the Portland metro area. Each of these BESS facilities can deliver power during peak demand or when other electric generating facilities are limited, which improves system flexibility, reliability and costs.

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Industry News

Operators Shut Down Niagara Mohawk's Nine Mile Point 1

LCG, Oct. 3, 2000--Operators manually shut down the Nine Mile Point Unit 1 nuclear power plant at 6:25 a.m. yesterday after the unplanned opening of a reactor relief valve, Niagara Mohawk Power Corp. said.

The opening of the relief valve lead to increased water levels in the plant's drywell, a structuresurrounding the reactor and designed to collect water discharged from the reactor. The increasedwater level in the drywell caused operators to declare, as required, an "Unusual Event" and notify the Nuclear Regulatory Commission.

The report was filed at 7:12 a.m. and noted that the reactor was manually "scrammed" from an operating level of less that 1 percent of capacity. It was just beginning the restart process following a maintenance outage.

Later yesterday, Niagara Mohawk reported that Nine Mile Point 1 was in cold shutdown mode and that the Unusual Event was terminated at 9:05 a.m.

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