Member state | DENMARK |
Case study | Thisted |
Description | Thisted Varmeforsyning (the local consumer owned district heating company) |
Region>City>location | Thisted |
Owner | Thisted Varmeforsyning (the local consumer owned district heating company) |
Operator | Thisted Varmeforsyning |
Installed capacity ( MWth) |
78 |
DH length (m) |
219 km |
Inhabitants connected | 5016 (13000 inhabitants in town) |
Design of the DH | Water based with pre-insulated pipes |
subsurface and surface technical schemes |
One production and one injection well. Absorption heat pumps driven by straw boiler. |
Operating Temperature of the DH | Winter/summer: Supply: 76/70 °C; Return: 40/44 °C |
Temperature of the geothermal ressource (production – injection) |
43 ° C / 11 ° C |
Geothermal flow rate |
Up to 200 m3/h |
Heat Pump if any (power in Mwe and COP) |
Absorption heat pumps: 7,7 MWth / COPth 1,7 |
Production of heating and/or cooling | For district heating |
Others uses (drinking water, cascade uses…) |
No |
Dates of begining and end of construction | 1982 – 1984 |
Planing of the operation (from pre-studies to full completion) |
1980 – 2001 |
Organisational scheme | |
Administration scheme | |
Investement for geothermal well |
6 million euros for two wells |
Investement for geothermal heating station |
6 million euros |
Investement for DH network and substation |
Not part of geothermal plant |
Financing (banks, funds, PPP…) |
Owner, former co-owner and EU grants |
Amount of Subsidies if any |
2,3 million euros in EU grants |
Difficulties faced | Production from cooler reservoir due to declining transmissivity in first tested deeper reservoir. Tax on power for electric heat pump causing shift to absorption heat pumps. |
Administrative permits | None |
Cost of the MWh sold | Not applicable. Consumers pay all costs for heat from the net. This includes network costs and costs for heat production from different heat production units. |
Innovation if any | The use of absorption heat pumps driven by straw district heating boiler, which makes it free to drive the heat pumps. |
Thisted
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