geothermal wallpaperProviderpixabayResolution4752 × 3168Aspect ratio1.50:1AuthorstuxSourceOpen original page Download wallpaper Available sizesPreview150 × 99Web640 × 426Large4752 × 3168Tagsgeothermalgeothermal energyearth cruststored heatregenerative energypower plantelectrical currentcombined heat and powerbuildingarchitecture