| Member state | ITALY |
| Case study | Pomarance |
| Description | Pomarance has 8 DH. They use steam at 60t/h to heat the city. The total networks are 60 MWth and supplies buildings and one industry. A flow rate regulating system saves 30 % of energy. |
| Region>City>location | Tuscany>Municipality of Pomarance |
| Installed capacity ( MWth) |
60MWth, referred to all GeoDH networks installed in the municipality of Pomarance |
| Installed geothermal capacity | 60 MWth |
| DH length (m) |
100000m, referred to all GeoDH networks installed in the municipality of Pomarance |
| Inhabitants connected | 2500 |
| Operating Temperature of the DH | 120°C – 80°C |
| Temperature of the geothermal ressource (production – injection) |
Superheated steam at 190-220°C |
| Production of heating and/or cooling | Heating only: 49,7 GWh/year in 2012 |
| Investement for geothermal well |
Wells were already existing, since geothermal heat is provided from Enel Green Power wells dedicated to electricity generation |
| Investement for geothermal heating station |
2,0Mio € |
| Investement for DH network and substation |
28,0Mio € |
| Financing (banks, funds, PPP…) |
“European funds: 20 Mio € Local institutions funds: 1,5Mio € Own funds / bank: the remaining amount” |
| Cost of the MWh sold | 53-63€/MWh |
| Comparison with fossil energies | 110-120€/MWh |
| Innovation if any | Flow rate regulating on utilities. In intermediate seasons, the installation of regulating valves on 60% of the network, resulted in 30% of energy saving Remote control: the system can be managed (including failure displaying) via smartphone, tablet, pc remote. This allows to have lower management costs. |
Pomarance
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