Combined Heat and Power
E.ON UK CHP owns and operates the combined heat and power interests of E.ON UK. We have invested over £480 million in schemes in the UK and we continue to be the market leader in the large-scale end of the CHP market. Our CHP schemes provide customers with more than 552MW of electricity and 955MW of heat.
The diagram demonstrates a simple CHP scheme which is typically made up of a gas turbine, waste heat recovery boiler and steam turbine.
Air is compressed and mixed with natural gas and burned in the gas turbine. Hot exhaust flows over turbine blades to induce electricity from an attached generator. Instead of being wasted through a chimney, the exhaust then heats water in the boiler producing high pressure steam which is put through the steam turbine producing more electricity. Finally, the remaining steam is sent on to be made use of by the customer and is the reason for the very high energy efficiency.