Average Daily Solar Hours (Insolation) Map USA

This is an official map provided by NREL ( US Department of Energy) that shows the average average daily solar insolation values for various areas of the US. Each kWh/m/day is consider to be one "solar hour". This is helpful to determine the size of the PV solar array (and battery plant) needed to operate a solar powered air conditioner for a given number of hours per day. See DC Solar Powered Air Conditioner

Central America, South America & The Caribbean Solar Insolation Map

Africa & The Middle East Solar Insolation Map

Europe Solar Sun Hours Map

Australia Solar Map

Click here to enlarge map. Note* DNI (Direct Normal Insolation), solar insolation, solar radiation, solar irrandiance are all the same thing. These terms all refer to the solar strength, measured in average kWh per day per square meter, in a given location.

Average Solar Hours Per Day:

Central America, South America & The Caribbean Solar Insolation Map

Africa & The Middle East Solar Insolation Map

Europe Solar Sun Hours Map

Australia Solar Map

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