United Kingdom - Direct Uses

 

MWt

TJ/year

District heating

2.76

72.5

batneology

1.0

34.0

Ground source heat pumps

280

1800

 

 

Total thermal installed capacity in MWt

283.76

Direct use in TJ/year

1906.50

Direct use in GWh/year

529.63

Capacity factor

0.21

 

Country Update: The City of Southampton Energy Scheme remains the only significant exploitation of low enthalpy geothermal energy in the UK. The scheme was started in the early 1980s, with the construction of a district heating system starting in 1987. The project has since evolved and expanded to become a combine heat and power scheme for 3,000 homes, 10 schools and numerous commercial buildings. The hot springs at Bath have long been a tourist attraction among the Roman architecture of the ancient city. The baths, together with four adjacent buildings, underwent major refurbishments and were re-opened in 2008. There are currently plans to use the heat from the Bath hot springs to supply a new underfloor heating system for Bath Abbey. During 2011, a geothermal borehole was drilled in the center of Newcastle-upon-Tyne on a brownfield site that is to be developed for university, commercial and residential buildings heating. In 2012 the Irish company, GT Energy announced that it was working with major utilities on a proposal to develop deep geothermal heat project in Manchester and several other UK cities. A deep co-axial heat exchanger will be installed in 2014 at 1,800 meter depth in Cornwall. The use of ground-source heat pumps have been slow, however, multiple units have been installed in the last 15 years estimated at 22,000 units installed to date. Examples of large GSHP installations include the King’s Mill Hospital in Mansfield (~5MW closed loop lake installation); a mixed office/commercial development next to St. Paul’s Cathedral in London (~2.4 MW combination of thermal piles and open loop); and, Churchill Hospital at Oxfored, the largest closed loop borehole installation to date in the UK (~3 MW).  (Batchelor, et al., 2015).


Taken from: John W. Lund and Tonya L. Boyd
Published in Direct Utilization of Geothermal Energy 2015 Worldwide Review


Total thermal installed capacity in MWt:186.62
Direct use in TJ/year849.74
Direct use in GWh/year236.1
Capacity factor0.14

The exploitation of geothermal resources in the country continues to be minimal. There are no proven high temperature resources and limited development of low and medium enthalpy resources. The main area of UK activity in the last five years has been in the rapid growth of ground source heat pump installations. The City of Southampton Energy Scheme remains the only exploitation of low enthalpy geothermal energy in the UK for district heating starting operation in 1987. It has been expanded to become a combine heat and power scheme for 3,000 homes, 10 schools and numerous commercial buildings.

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 

Taken from the paper by John W. Lund, Derek H. Freeston, and Tonya L. Boyd: "Direct Utilization of Geothermal Energy 2010 Worldwide Review"; published in Proceedings of the World Geothermal Congress 2010, Bali, Indonesia, 25-29 April 2010