Worlds of David Darling
Encyclopedia of Science
Home > Encyclopedia of Alternative Energy

diffuse insolation

diffuse and direct insolation
Diffuse sunlight (B), reflected from clouds, the ground, and nearby objects, and direct sunlight (A) falling onto flat-plate solar panels. Credit: US Dept. of Energy
Diffuse insolation is sunlight received indirectly as a result of scattering due to clouds, fog, haze, dust, or other obstructions in the atmosphere or on the ground. Unlike direct insolation, diffuse light cannot be focused by the optics of a concentrator photovoltaic system, though it can be used by a flat-plate collector. See also insolation.

Related category