Storage power plant in California, United States of America. Approximate location 34.0594, -117.7742.
StorageCaliforniaUnited States of America
VESI Pomona is a 20 MW storage power plant in California, United States of America. It is operated by VESI Pomona Energy Storage Inc.. Based on reported annual generation of -3 GWh, it can supply roughly -771 homes. It ranks #3817 of 9,833 United States of America power plants by installed capacity. Commissioned in 2017, it is around 9 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0050300.
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Operated by VESI Pomona Energy Storage Inc..
This storage plant stores and releases electricity (pumped-hydro or batteries) to balance the grid. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Northern Hemisphere, latitude 34.1°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 67% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 24/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.
In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
The #14 largest storage power plant of 104 in United States of America by capacity.
United States of America has 104 storage power plants in this dataset, together about 816 MW of capacity.
Coordinates 34.0594, -117.7742 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
