The core of the Earth can reach temperatures of up to 6,000˚C. Even just a few kilometres beneath the Earth’s surface temperatures can reach up to 250˚C. So even if the ground feels cool, there’s valuable heat energy there. Innovative geothermal energy technology helps to harness this heat.
It works in three main ways:
You might be surprised to learn that even here in the UK, there’s potential to generate a lot of heat.
The most popular domestic geothermal technology is the third kind; ground source heat pumps. These work by using pipes that are buried in the garden to extract heat from the ground. The pump circulates a mix of water and antifreeze around the loop of pipe (a ‘ground loop’), which absorbs the heat, which is then passed back into your home for use in central heating or warming water tanks.