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Geothermal heat pump to join London district energy scheme

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E.ON has announced the start of a £4mn project to install one of the UK’s largest zero carbon heating and cooling systems beneath the streets of London, with a new heat pump being added to at the Citigen energy centre in the heart of London’s square mile.

This will draw from the natural warmth of the earth as well as recycling waste heat from power generation which would otherwise vent into the atmosphere. 

This energy can be stored in three boreholes extending 200 m below the capital and provide zero carbon heating and cooling for buildings.

The 4 MW of extra heating capacity is equivalent to the demand of 2,300 average UK homes and is complemented by a further 2.8 MW of new cooling capacity to customers across the financial district, says E.ON. The new technology adds to Citigen’s existing combined heat and power (CHP) engines which already produce enough electricity and heating for the equivalent of more than 11,000 homes.

The innovative heat pump and borehole solution will cut the carbon emissions associated with heating and cooling by up to 50%, says the company, and will help to improve local air quality by reducing nitrogen oxide emissions. The project forms part of the City’s wider efforts to meet net zero targets and contributes to London’s climate emergency plans.

Michael Lewis, E.ON UK Chief Executive, said: ‘Tackling the environmental impact of heating, especially in densely populated areas, will be key to meeting the UK’s 2050 net zero targets. Part of that challenge means re-imagining how energy is provided to homes, businesses and cities. In taking the next step and installing heat pump and geothermal technology at Citigen we’re making a powerful statement of what can be done to reduce carbon usage on a large scale.’

Photo: E.ON

News Item details

Journal title: Energy World

Countries: UK -

Organisation: E.ON

Subjects: District heating,

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