Overview
CalPeak Power Vaca Dixon Peaker Plant is a 60.5 MW OCGT gas-fired peaker plant in California, USA. It provides grid reliability during peak demand periods.
CalPeak Power Vaca Dixon Peaker Plant is an open-cycle gas turbine (OCGT) facility located in California, United States. With a capacity of 60.5 MW, it operates as a peaker plant, supplying electricity during periods of high demand. The plant is owned by CalPeak Power LLC and is currently operational. The plant uses natural gas as its primary fuel, a common choice for peaker plants due to its quick start-up capabilities. OCGT technology is less efficient than combined-cycle systems but offers flexibility for grid balancing. In California, such facilities operate under the jurisdiction of the California Air Resources Board (CARB) and must comply with state and federal emission standards, including the Clean Air Act and local air district rules. As a peaker plant, Vaca Dixon plays a critical role in maintaining grid stability, especially during heatwaves or when renewable generation fluctuates. Its location in California's energy market, which has aggressive renewable portfolio standards, positions it as a backup resource for intermittent solar and wind power. The plant's relatively small capacity makes it a niche but essential component of the regional power system.
Environmental context
The plant's gas-fired OCGT technology produces CO2, NOx, and SOx emissions, though natural gas burns cleaner than coal. Its location in California subjects it to stringent air quality regulations under the Clean Air Act and state-level caps. The facility's role as a peaker means it operates intermittently, reducing overall emissions compared to baseload plants. Proximity to populated areas may raise local air quality concerns, but modern emission controls mitigate impacts.
Frequently asked questions
The plant is located in California, United States, near the city of Vacaville in Solano County.
It is an open-cycle gas turbine (OCGT) peaker plant that runs on natural gas, designed to meet peak electricity demand.
The plant has a capacity of 60.5 megawatts (MW), typical for a small to medium peaker facility.
The plant must comply with the US Clean Air Act, including NAAQS and state-level rules from the California Air Resources Board (CARB), as well as local air district permits.
Peaker plants provide rapid-response electricity during high demand periods, helping to stabilize the grid when renewable sources like solar are less available.