Key Facts
Vojens, Denmark
Solar Collectors Area 70 000 m²
Solar Thermal Capacity 49 MWth
Households supplied 2 000
Storage capacity 200 000 m³
Commissioned 2016
Type of collector/supplier flat plate collectors by Arcon Sunmark – Trade of GREENoneTEC
Project Developer Arcon Sunmark – Trade of GREENoneTEC
CO2 savings Approximately 6 000 tonnes per year
In Vojens, Denmark, known for its less sunny climate, the world’s largest seasonal solar heat storage project has been operational since 2016. This extensive storage functions as a seasonal heat storage, enabling the solar heating plant, which is the third largest in the world, to contribute over 50% of the annual heat production to the network.
The remaining heat is generated by three gas engines, a 10 MW electric boiler, an absorption heat pump, and gas boilers.