Sunstore 4 Marstal, Denmark

Sunstore 4 Marstal, Denmark

Summary Sunstore4 View

Sunstore4 Marstal, Denmark

The city of Marstal, in the Danish island of Aero, has adopted in summer 2012 the Sunstore4 model, a 100% renewable district heating system integrating several different technologies: solar thermal, biomass boiler and heat pump. The plant also include ORC electricity production and a 75,000 m3 seasonal heat storage. This innovative and flexible solution also shows an affordable heat production cost, between 40 and 60 €/MWh.

The company managing the district heating system is owned by the heat consumers themselves, which founded a cooperative company with two main goals: producing heat from local energy sources and assure a negligible impact on the environment. At the same time, by assuring a long term stability of the heat cost, being independent from the price oscillations of conventional fossil fuels, it provides the citizens with a clear view of their economic future.

The heat supply is about 32 GWh/year, 55% of which is provided by solar thermal, 40% by biomass and only 5% by the heat pump. It should be noted also that solar thermal shows no polluting emissions at all in its operation phase and that biomass is CO2 neutral.The Sunstore4 project has been developed and implemented by a large international research group, in the framework of a FP7 funded European project.

 

PPT Presentation of the Sunstore4 system, Marstal View

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