Ring Sopark is a new housing area outside Bradstrup with app. 500 single family houses. The first part (100 houses) will be supplied with district heating, but in a way that makes it CO2 — neutral. Altogether the houses will have app. 1.000 m2 roof, integrated solar collectors (50-100 m2/roof), 2.000 m2 ground mounted solar collectors, 1.000 m3 accumulation tank and a compressor heat pump to cool the ground mounted solar collectors. Surplus heat in the summer period will be “lent” to the district heating system covering the rest of the city and “barrowed” again in the winter pe­riod. One of the topics of the project is to show that collective solutions for bringing down CO2 — emissions from houses are cheaper than individual solutions in the house.

The project will demonstrate

• Roof integrated solar collectors delivering to the district heating network.

• CO2 — neutral houses to lowest costs for the society.

• Extended regulation possibilities for electricity.

• Optimises district heating network with a heat loss of 15-20% in new areas with single houses.

• Central control of heat demand from the district heating system to each house making it possible to lower the forward temperature in periods.

The project is supported from the Danish state to make it feasible compared to the present heat production price from the district heating plant, but when the energy frame for buildings will be lower, the costs can be fully paid by the consumers because the investment costs for reduction of fuel consumption are lower than the investment cost in the single house for the same reduction.

The first part is expected to be build in 2009.