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Midway Solar Farm II

Solar power plant in California, United States of America. Approximate location 33.1621, -115.5317.

SolarCaliforniaUnited States of America

Midway Solar Farm II is a 30 MW solar power plant in California, United States of America. It is operated by Dominion Renewable Energy. Based on reported annual generation of 80 GWh, it can supply roughly 22,971 homes. It ranks #3289 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, solar supplies about 8.6% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

30MW installed capacity
80GWh reported / yr
22,971homes powered
2017commissioned (~9 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0060237.

Reported generation trend

2017: 72 GWh20172018: 87 GWh20182019: 80 GWh201987 GWh

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

Owner

Operated by Dominion Renewable Energy. All plants by this company →

Local climate & thermal context

This solar plant converts sunlight directly into electricity with photovoltaic panels. It sits in a hot desert climate (Köppen BWh) — Northern Hemisphere, latitude 33.2°N — which shapes how much energy it can produce and how its output varies through the year.

22.6°Cannual mean temp
444heating degree-days (base 18°C)
2,146cooling degree-days (base 18°C)
-27 melevation

Monthly mean temperature

J: 13 °CJF: 15 °CFM: 18 °CMA: 21 °CAM: 25 °CMJ: 30 °CJJ: 33 °CJA: 33 °CAS: 30 °CSO: 24 °CON: 17 °CND: 13 °CD33 °C

Heating degree-days here run 82% 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: 20/100 — 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 2.9% 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 #258 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 33.1621, -115.5317 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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