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.