In 2015 only 0,80 million m² were newly installed, about 10% less than 2014. The total collector area installed 2015 is around 19.2 million m² in approx. 2,1 million solar thermal systems with a thermal capacity of 13.4 GW in 2015. (3/2016 BSW-solar www.solarwirtschaft.de)
Over 95% of the solar thermal market consists of collector arrays on single- or two-family houses with average systems of 4- 6 m² for water systems and 10-12 m² for systems that support the space heating system.
An increasing market is expected for solar process heating, solar district heating grids and multi-family-houses as funding conditions have improved with a Market Incentive Program updated April 2015. (www.bmwi.de/go/marktanreizprogramm; www.heizen-mit-erneuerbaren-energien.de )
According to BSW-solar´s “Solar Thermal Roadmap”, published 2012, the solar thermal industry must construct increasingly larger plants and reduce their costs through standardization and simplification of the systems.
In Germany 60% of the total heat demand and nearly 35% of the final energy demand are used in applications below 100°C for space heating, domestic hot water and process heating and heating networks. Integration of solar thermal systems into heating network systems is expected to expand but stays ambitious, because nearly all heating networks operate at temperatures from 80° to 130°C which require high efficient collectors .
An ambitious expansion goal of the German Solar Heating Roadmap is to increase the share of solar heating in the requirements and regulations for households from around 1% in 2015 to approximately 8% in 2030. In German industry (heat requirement up to 100°C) the solar fraction shall rise from nearly 0% today to 10% in 2030.
With its “Energiewende” (energy turnaround) the German government intends to provide the vast majority of Germany`s energy supplies with renewable energy by 2050.