These Old British Coal Mines Now Pump Out Geothermal Heat

The last mine in Seaham closed in the 1990s, leaving behind holes that burrow deep into the earth. Today, these old mine shafts frequently flood, and when they do, the town pumps out the geologically warmed water. Heat pumps warm it further, and it is then piped into homes as a source of natural heat. Lo and behold, mines that once chugged out fossil fuels now dole out clean, green geothermal energy.

Source: These Old British Coal Mines Now Pump Out Geothermal Heat