The EPA EnviroAtlas Area of Solar Energy (km2) per 12-digit HUC dataset was clipped to California sub-watersheds (NRCS).
Original Metadata:
This EnviroAtlas national map estimates the square
kilometers of area within each subwatershed (12-digit HUC)
that offers the potential for harvesting solar energy. HUCs
were used as the framework to summarize the average annual
daily potential watt hours of solar energy that could be
harvested per square meter. This map represents the area of
land that receivessolar energy but it does not take into account
land cover, ownership, land use, or aspect.
Area of solar energy data were created by calculating the area
within the 12-digit HUC boundaries. The values represent the
area of earth’s surface receiving solar energy; they can be
compared to corresponding values of Average Annual Daily
Potential measured in kilowatt hours per square meter per day
(kWh/m2
/day). The area of solar energy map does not take
into account land use, ownership, land cover, or aspect.