Links

• Global Solar Atlas by The World Bank.

Government sponsored tools

• PVWatts "Estimates the energy production of grid-connected photovoltaic (PV) energy systems throughout the world."
• NSRDB: National Solar Radiation Database

• PVGIS "Photovoltaic geographical information system"

• Retscreen - Natural Resources Canada

• MeteoSwiss Monthly and annual maps
• How much electricity or heat can my roof produce?