is suitable for warm water generation and can be used for heating in buildings which contain heating system based on water circulation
generates heat in daytime. Cloudy weather, shadows, direction (compass point) and angle of collectors will effect to the amount of generation.
system needs electricity
system contains a thermal storage (insulated water tank)
efficiency of commercial solar thermal collectors are around 40-90% (status in 2018) of the solar radiation depending on difference of temperature between the collector and environment, radiation effectivity and the type of collector
life cycle of a solar thermal collector is around 25-30 years, other parts of the system have typically shorter life cycles