Geothermal Companies

The geothermal market in Europe

European geothermal splits into two distinct businesses: deep geothermal (power generation and district heating from kilometers-deep wells) and shallow geothermal (ground-source heat pumps for buildings). Deep geothermal clusters where geology allows, while shallow geothermal is viable almost everywhere and is growing fast as a building heating solution.

Deep geothermal projects carry meaningful subsurface risk, so drilling expertise and resource assessment quality decide outcomes. Municipalities evaluating district heating projects should prioritize operators with producing wells in comparable geology. For shallow geothermal, the market is closer to skilled trades: certified drilling contractors and heat pump installers, where local licensing and workmanship references matter most.

Across the 2227 geothermal companies tracked by FirmLens, Germany hosts 446, France hosts 255, Netherlands hosts 154, Italy hosts 121 and Spain hosts 92, making these the deepest markets in our dataset. Company counts update as our crawler re-verifies the directory.

How to evaluate geothermal companies

• Producing reference projects in comparable geology for deep geothermal
• Drilling risk management: insurance instruments and exploration methodology
• Certified drilling and installation credentials for shallow/ground-source projects
• District heating integration experience for municipal-scale projects