The map shows the average amount of direct sunlight received in different areas of the United States. It gives data in units of kilowatt hours per square meter per day (kWh/m2/day) Annual Average Direct Sunlight Received in the United States kWh/mº/Day >75 70 to 75 6510 70 60 1065 55 to 60 5.0 to 55 45 to 5.0 4D 1045