Member state UK
Case study An Integrated Energy Scheme using Geothermal Energy in Southampton
Description In the Wessex basin, Largest commercially developed CHP/district energy scheme in the UK, Started 28 years ago (1986), Built on Joint Co-Operation Agreement with Southampton City Council, 
Region>City>location Southampton
Installed capacity
( MWth)
7 MW of CHP, 2MW geothermal well, and 1 MW biomass in 2014
Installed geothermal capacity  2MW geothermal well
DH length
14 km pipe network
Inhabitants connected Consumers include:
Civic Centre
5 Hotels
Royal South Hampshire Hospital
Offices Complexes
Southampton Solent University
Olympic Size Swimming & Diving Complex
Entire 53 Acre West Quay Shopping Centre
Public and Private Sector Housing
……….. and many more
 Operating Temperature of the DH Piping heating & potentially cooling to buildings – “Energy Linking”
Heat Losses – 1°C per km
Reliability ~ 100% (99.98% for Southampton)
Production of heating and/or cooling Supplying heating, cooling and electricity
Investement for
geothermal heating station
Capital cost to date £13M
(banks, funds, PPP…)
£5M Energy Sales
Cost of the MWh sold Project built on 20 year energy supply contracts
Comparison with fossil energies  •£0.6M p.a. cost savings to consumers.•12,000 tons of CO2 emissions saved p.a.
Innovation if any Commercial arrangements: Works through a Joint Co-operation Agreement between City Council and Cofely
The City Council commits to facilitate success of scheme by:
•Taking heat where practicable
•Promoting scheme to potential users
•Supporting development of network
•Provision of land for heat station
•Treating Cofely as a statutory utility within city                                                           Futur proofing: New technologies being actively considered:-
•Biomass – woodchip
•Energy from Waste
•Anaerobic Digestion
•Fuel Cells …and several others

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