Marstal Fjernvarme

The Marstal district heating system incorporates 33,300 square meters of solar panels and two ground storage basins with a combined capacity of 85,000 cubic meters.

Established in 1962, Marstal District Heating began its transition to renewable energy in 1994 with a solar collector installation at the local swimming pool.

The district heating system demonstrates Danish engineering excellence through community ownership and operation by local residents of Marstal.

During summer months, the solar thermal system supplies all heating requirements for the network while storing excess heat in ground reservoirs for autumn and winter use.

The facility operates with a specialized control system that adjusts pump operations based on solar radiation levels, reducing pumping energy consumption by 75 percent.

Location: Ærø Municipality

Website: https://solarmarstal.dk

GPS coordinates: 54.85229,10.50630

Latest update: March 14, 2025 20:08