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NuScale Power Achieves Standard Design Approval from NRC for 77 MW SMR

LCG, May 30, 2025--NuScale Power Corporation (NuScale), a leading provider of advanced small modular reactor (SMR) nuclear technology, yesterday announced that it has received design approval from the U.S. Nuclear Regulatory Commission (NRC) for its uprated 77 MW power modules. NuScale states that it remains the only SMR technology company with design approval from the NRC, and the company remains on track for deployment by 2030, with 50- and 77-MW SMR options.

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EIA Presents Analysis of California's Solar and Wind Power Curtailment Challenges

LCG, May 29, 2025--The U.S. Energy Information Administration (EIA) released an analysis yesterday showing that the California Independent System Operator (CAISO), the grid operator for most of the state, is increasing its curtailment of the rapidly growing solar- and wind-powered generation facilities in order to balance electricity supply and demand, which is necessary to maintain a stable electric system.

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Industry News

Lake Michigan Silt Closes AEP's Cook Nuke

LCG, Aug. 30, 2001--American Electric power Co. said this morning that the 1,100 megawatt Unit 2 of its Cook nuclear power plant at Benton Harbor, Mich., was being taken off line because of the intrusion of Lake Michigan silt into its cooling water systems.

"The silt was drawn in by plant water intake pipes and degraded cooling water systems required for plant safety equipment and back-up power sources," AEP said in a statement.

Silty water is a fine abrasive and can literally grind down the moving parts of a system in which it circulates. AEP said Unit 1 at Cook, a twin of Unit 2, was taken off line on Monday to replace a circulating water pump discharge valve. The company did not say silt was what made the replacement necessary but did say that silt intrusion affects the cooling water systems for both units.

Three huge pipes, each 16 feet across, bring water from one-half mile out in Lake Michigan into the plant. It is not surprising that silt -- and an occasional boat -- would find its way into the plant's systems.

AEP was unable to say how long the units would be shut down, but said return-to-service schedules for both units will be established following an investigation to determine the cause of the silt intrusion.

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