Geothermal Companies in Spain

Geoatlantic is a geothermal energy research and development initiative operating across the Atlantic Arc region, focusing on geothermal heat pump technology, local capacity building, and energy transition support for communities in Scotland, England, France, Portugal, and Spain.

GEOFIT is an EU-funded Horizon 2020 innovation project developing cost-effective geothermal retrofitting solutions for buildings. A consortium of 24 partners from 10 EU countries combines advanced Enhanced Geothermal Systems (EGS) components with complementary technologies including heat pumps, drilling monitoring, and structural health monitoring.

Spanish engineering and installation company specializing in HVAC, refrigeration, and renewable energy systems including biomass, geothermal, and solar thermal with over 35 years of experience.

i1Solar specializes in solar photovoltaic installations and heat pump systems for residential and commercial clients in the Basque Country. The company provides end-to-end services including system design, installation, permitting, grant application assistance, and post-installation monitoring.

Spanish geothermal energy company specializing in geothermal installations, heat pump systems, and climate control solutions for residential and commercial buildings. Operating since 2009 with over 1,230 boreholes completed.

Vaillant manufactures heating, cooling, and hot water systems including heat pumps, boilers, air conditioning, and aerothermal/geothermal solutions for residential and commercial applications.

Solsierra is a Spanish renewable energy installer specializing in residential and collective solar photovoltaic systems, aerothermal heating, and electric vehicle charging solutions. The company operates as a founding partner of CE Sierra, a community energy coalition, providing turnkey installations with permitting and subsidy management.

Engineering and consulting cooperative specializing in photovoltaic solar systems and energy communities. Since 2009, Civicenergy has supported renewable energy transition through democratic, equitable, and sustainable community energy projects globally.

Spanish company specializing in the sale and installation of air source heat pump (aerotermia) systems, radiant floor heating, heat pumps, solar energy, biomass, and geothermal solutions across multiple regions in Spain.

Spanish renewable energy installer specializing in biomass, solar, aerothermal, and geothermal systems for residential heating and hot water. Offers engineering design, installation, and maintenance services across northern Spain.

Spanish HVAC specialist with 30+ years' experience in radiant floor heating, geothermal, and aerothermal systems for residential, commercial, and industrial applications across Extremadura and surrounding regions.

EU-funded Horizon Europe research project developing a novel CO2-based electrothermal energy storage system combining transcritical CO2 cycles, geological CO2 storage, and geothermal heat extraction for renewable energy dispatchability and permanent CO2 sequestration.