Three types of proven geothermal technology are available to meet heating demands in the UK;

  • Ground Source Heat Pump (GSHP) systems

  • Augmented GSHP systems

  • Open loop systems


For power generation deep and novel systems are applied.

The technology applied at a given location will depend on the geological conditions and specific heat requirements.


Ground Source Heat Pumps & Augmented GSHP:

  • Heating and cooling

  • Commercial and domestic applications

  • Depths from surface to 1,000m

  • Temperatures from 10 to 40°C

  • Open or closed loop systems

  • GSHP available almost everywhere

  • Augmented systems can be supplied        with warm water from boreholes or flooded mines

Open loop:

  • Heating and cooling

  • Commercial and domestic applications

  • Depths from near surface to 2,500m

  • Temperatures up to 100°C

  • Pairs of boreholes; production and injection

  • Purpose-drilled or repurposed

Wherever you are in the world, the rocks get hotter with depth.

This is known as the geothermal gradient

Deep and novel systems:

  • Electricity production and Combined Heat and Power

  • Commercial and infrastructure applications

  • Depths of 2,500m to 6,000m

  • Temperatures up to 200°C

  • Best suited to areas with high geothermal gradients, such as Cornwall