SOLAR THERMAL: Learn How Solar Thermal Works

Solar thermal differs from Photovoltaics (solar electrical systems) in that solar thermal processes involve heat generated from the sun rather than electricity generated from the sun. In solar thermal systems, we capture the sunʼs heat for water uses such as hot water for hot water heaters and washing machines and dishwashers, heating pools, solar air conditioning, solar HVAC etc...

Solar thermal collectors are defined by the USA Energy Information Administration as low-, medium-, or high-temperature collectors. Low temperature collectors are flat plates generally used to heat swimming pools. Medium-temperature collectors are also usually flat plates but are used for creating hot water for residential and commercial use. High temperature collectors concentrate sunlight using mirrors or lenses and are generally used for electric power production. This is different from solar photovoltaics, which convert solar energy directly into electricity.