SOLID is one of the world leading specialists in all applications of solar thermal energy. Headquartered in Graz, Austria, SOLID has been constructing numerous Large Scale Solar Plants since 1992 for solar applications such as Solar air-conditioning, Solar domestic and process hot water and heating.

Till date, SOLID has successfully completed more than 200 Large Scale Solar Plants on commercial buildings such as Offices, Hospitals, Hotels, Recreational Centres and Airports etc. Comparing amongst other Solar and Renewable technologies, SOLID's Solar thermal system is well known for achieving the fastest payback.