The famous hot springs at Bath have long been a tourist attraction among the Roman architecture of the ancient city. Now the baths, together with four adjacent buildings, have undergone a major refurbishment, and have been reopened in 2008 and are now fully operational.

The level of activity with geothermal heat pumps is estimated to be in the range of 3,000 to 5,000 installations per year. A few of these installations are large scale open loop systems (~500 kW to 2 MWt), the majority are closed loop systems in the range of 3.5 kW heating only, with approximately 750 units at commercial/institutional sites and 4,500 units at residential sites with full load operating hours per years of 1,500 and 1,800 respectively. The main driver for the geothermal heat pumps activity has been the realization that these connected to the UK grid can offer significant reductions in overall carbon emissions compared to traditional methods of heat delivery.

The distribution of the various applications are:

2.761 MWt and 72.545 TJ/yr for district heating;
0.251 MWt and 7.914 TJ/yr for greenhouse heating;
2.11 MWt and 15.88 TJ/yr for bathing (Bath);
181.50 MWt and 753.40 TJ/yr for geothermal heat pumps.

The total is: 186.62 MWt and 849.74 TJ/yr