Mira Loma

Solar power plant in California, United States of America. Approximate location 34.0131, -117.5375.

SolarCaliforniaUnited States of AmericaCO₂ reported

Mira Loma is a 3 MW solar power plant in California, United States of America. It is operated by Costco Wholesale. Based on reported annual generation of 3 GWh, it can supply roughly 771 homes. It ranks #7143 of 9,833 United States of America power plants by installed capacity. Commissioned in 2011, it is around 15 years old — relatively modern. Its measured emissions of 5,491 t CO₂/yr (Climate TRACE) are equivalent to about 1,280 cars driven for a year. In context, solar supplies about 8.6% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

3MW installed capacity
3GWh reported / yr
771homes powered
5,491t CO₂ / yr (Climate TRACE)
2011commissioned (~15 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0058698.

5,491 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

1,280passenger cars driven for a year
716homes' yearly energy use
91,517tree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions reported to Climate TRACE.

Reported generation trend

2013: 4 GWh20132014: 4 GWh20142015: 4 GWh20152016: 4 GWh20162017: 4 GWh20172018: 3 GWh20182019: 3 GWh20194 GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Costco Wholesale. All plants by this company →

Local climate & thermal context

This solar plant converts sunlight directly into electricity with photovoltaic panels. It sits in a warm-summer Mediterranean climate (Köppen Csb) — Northern Hemisphere, latitude 34.0°N — which shapes how much energy it can produce and how its output varies through the year.

18.0°Cannual mean temp
766heating degree-days (base 18°C)
784cooling degree-days (base 18°C)
326 melevation

Monthly mean temperature

J: 12 °CJF: 13 °CFM: 14 °CMA: 16 °CAM: 19 °CMJ: 22 °CJJ: 25 °CJA: 25 °CAS: 23 °CSO: 20 °CON: 15 °CND: 12 °CD25 °C

Heating degree-days here run 69% 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.

Solar PV loses ~0.35%/°C above 25°C cell temperature — roughly 0.1% at warm-season highs here (estimate).

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.

How it compares & nearby plants

The #1701 largest solar power plant of 3283 in United States of America by capacity.

United States of America has 3283 solar power plants in this dataset, together about 37,970 MW of capacity.

Nearby power plants

Location

Coordinates 34.0131, -117.5375 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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