Monthly Average Solar Resource for horizontal and tilted flat-plates, and 2-axis tracking concentrating collectors. These data provide monthly average and annual average daily total solar resource averaged over surface cells of approximately 40 km by 40 km in size. Countries included in dataset include: Africa, Bangladesh, Brazil, Caribbean, Central America, China, East Asia, Ethiopia, Ghana, Kenya, Mexico, Nepal, South America, Sri Lanka, and the United States. Units: kWh/m^2/day Source: U.S. National Renewable Energy Laboratory (NREL)

SRID 900913 of two available coordinate systems. Normal direct solar radiation in kWh/m2/day for 1 year organized into cells with 40km x 40km Source: INPE (National Institute for Space Research) and LABSOLAR (Laboratory of Solar Energy/Federal University of Santa Catarina) - Brazil

SRID 4326 of two available coordinate systems. Normal direct solar radiation in kWh/m2/day for 1 year organized into cells with 40km x 40km units:KWh/m sq. per day, Source: INPE (National Institute for Space Research) and LABSOLAR (Laboratory of Solar Energy/Federal University of Santa Catarina) - Brazil