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UTES

Underground Thermal Energy Storage -

The Ideal UTES exploits seasonal temperature changes to store both chill and heat, The energy is stored in aquifers, wells, caverns, boreholes gravel beds or other, we are recommending that unused tunnels and caverns in the London Underground railway are put to good use in this way.

In the case of London Underground the source of heat is to be derived from cooling the overheated air in the tunnels during the summer months. During winter months cold storage material, rock, water or other is chilled using refrigeration plant by transferring the energy to ambient air, or surface water from a river etc.

Although large scale* UTES systems are a very recent technology there are systems in operation in Canada, the USA and Sweden

By using UTES technology energy savings of 60% to 80% have been reported.

*Several societies have stored ice formed in winter until well in to the summer months using straw insulation

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