McGrath Peaker - 49.8 MW OCGT Gas Peaking Plant in California, USA

McGrath Peaker is an open-cycle gas turbine (OCGT) power plant located in California, United States. With a capacity of 49.8 MW, it is a small-scale peaking facility designed to meet short-term electricity demand spikes. The plant is owned and operated by Southern California Edison Co, a major utility serving the region. The plant uses natural gas as its primary fuel, a common choice for peaking plants due to its fast start-up capabilities and lower emissions compared to coal. As an OCGT facility, it operates with lower efficiency than combined-cycle plants but offers flexibility for grid balancing. The plant falls under the regulatory oversight of the US EPA's Clean Air Act, including NAAQS and regional air quality management programs in California. McGrath Peaker plays a key role in maintaining grid stability in Southern California, particularly during heat waves or when renewable generation fluctuates. Its location near Ventura County supports local electricity needs without the need for long-distance transmission. The plant's relatively small capacity and gas-fired technology align with California's transition toward cleaner energy sources.

The plant's gas-fired OCGT technology produces lower CO2, SOx, and NOx emissions per MWh compared to coal plants, but its peaking operation may result in higher emissions per unit due to lower efficiency. Located in a region with stringent air quality standards under the California Air Resources Board, the facility must comply with state and federal emission limits. Proximity to populated areas in Southern California necessitates careful monitoring of local air quality impacts.