


The housing estate Berliner Ring with its high rise buildings was constructed in the 1960s. The over 700 flats are owned by individual owners and not by a single company. This was a special challenge for installing the solar system in 2004–2006, as each owner

The solar thermal plant, with in total 790 m²/8,500 ft², supports the energy supply of domestic hot water system, heating system, air-conditioning system (via absorption chiller) and feeds solar heat into the existing district heating grid.
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