Member state | HUNGARY-2 |
Case study | Bóly |
Description | Bóly is a small agricultural town with 4000 inhabitants. In 2006, a district heating project is born : 1500 m deep production well was drilled. The wellhead temperature is 84°C in this well. A 2.5 km long pipeline transports hot water. At the end of the pipeline, the thermal water is 76°C, which is reinjected under the ground. With the help of this system, the town gas consumption has been reduced by 800 000m3 per year. |
Region>City>location | Southern Hungarian Transdanubian Region |
Owner | municipality |
Operator | municipality |
Installed capacity ( MWth) |
2,5 |
Installed geothermal capacity | 2,5 MWth |
DH length (m) |
7000 |
Inhabitants connected | Municipal and entrepereurial buildings are connected in a village of 4000 inhabitants |
Design of the DH | Three stages cascade system |
subsurface and surface technical schemes |
Attached in the doc file |
significant pictures if any | Attached photo in the doc file |
Operating Temperature of the DH | 80-34oC |
Temperature of the geothermal ressource (production – injection) |
84oC reservoir temperature, 28-34oC injection temperature |
Heat Pump if any (power in Mwe and COP) |
no |
Production of heating and/or cooling | 20500 GJ/y |
Dates of begining and end of construction | 2007-2008 |
Planing of the operation (from pre-studies to full completion) |
3 years |
Investement for geothermal well |
0,8 mio€/2 wells |
Investement for geothermal heating station |
0,33 mio€/15 stations |
Investement for DH network and substation |
0,3 mio€/7 km pipeline |
Financing (banks, funds, PPP…) |
EU based subsidy 60%, municipality 40% |
Amount of Subsidies if any |
0,85 mio € |
Difficulties faced | cascade system |
Administrative permits | water management operating permit |
Cost of the produced MWh | ~9.3€/MWh (incl. investment cost, support and 25 years operation) |
Cost of the MWh sold | |
Comparison with fossil energies | ~80% of gas price |
Final energy cost structure | |
Taxes | no |
Pay back | 11.8 years |
Innovation if any | Three stages cascade system |
Bóly
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