Generation output reduced at major gas-fired plants in California

Subsidiaries of Sempra Energy (NYSE:SRE) and Calpine (NYSE:CPN) saw power generation reduced at two significant natural gas-fired power plants in recent days.

Sempra utility San Diego Gas & Electric (SDG&E) experienced an unplanned curtailment of 300 MW at its Palomar gas-fired unit on Feb. 28. Meanwhile, the Calpine Los Medanos gas unit California had its power reduced by almost 300 MW (297 (MW) on Feb. 26, according to data from the Department of Energy (DOE).

Palomar is rated at 575 MW and Los Medanos is listed at 561 MW, DOE said. DOE cited outage data provided by the California Independent System Operator (CAISO).

Meanwhile in Nevada, NV Energy has restored power to more than 10,000 customers after a circuit breaker failure on Feb. 28. NV Energy indicated that the cause of the outage was a “catastrophic failure” of a circuit breaker at one of its substations.

NV Energy is part of Berkshire Hathaway Energy.

About Wayne Barber 4201 Articles
Wayne Barber, Chief Analyst for the GenerationHub, has been covering power generation, energy and natural resources issues at national publications for more than 20 years. Prior to joining PennWell he was editor of Generation Markets Week at SNL Financial for nine years. He has also worked as a business journalist at both McGraw-Hill and Financial Times Energy. Wayne also worked as a newspaper reporter for several years. During his career has visited nuclear reactors and coal mines as well as coal and natural gas power plants. Wayne can be reached at