Solar Radiation - Daily Surface Energy

Solar energy accumulated on south faced horizontal to vertical tilted surfaces on the northern hemisphere latitude 0^oN, 30^oN and 60^oN - are indicated in the diagrams below:

Solar Radiation - Latitude 0^oN

• 1 MJ = 0.278 kWh = 239 kcal = 948 Btu
• 1 m² = 1550 in² = 10.764 ft²

Solar Radiation - Latitude 30^oN

Solar Radiation - Latitude 60^oN

At equator there may be enough radiation in winter time to consider year-round applications. In the northern hemisphere we have to look for applications that requires energy mainly in summer time.