Dictionary of Energy

Solar. the amount of energy that a building absorbs due to solar energy striking its exterior and conducting to the interior, or by passing through windows and being absorbed by materials in the building.
Solar. a greenhouse that requires minimal use of supplemental energy because it is designed and built to make maximum use of solar energy for both heating and lighting.
see SOLAR GAIN.
Solar. a system that combines the use of a solar energy system with a heat pump, to increase the efficiency of both; e.g., the lesser amount of heat collected by a solar system in winter may be too low in itself for use in direct heating but can be used as a source for a heat pump instead.
Solar. a standalone electrical power supply system for single buildings by means of solar energy, typically used to operate small appliances in rural areas without electrification.
Solar. a wooden box with a clear glass top that allows solar radiation in, and a black inner lining that absorbs this radiation and converts it to heat. A precursor to modern solar thermal collectors, used to heat food and water.
Solar. the angle at which the earth must turn...