In 2022, the production of high-efficiency electricity from CHP units in the country decreased by 10.22% to 3 285 gigawatt hours compared to the previous year 2021. Steam condensing turbines with an efficiency above 80% have the largest share in the combined production of high-efficiency electricity, which in 2022 is 35.22% or 1 157 gigawatt hours.
CHP units are thermal installations in which the energy released from the fuel is transmitted to an intermediate fluid. This intermediate fluid is normally directed in its entirety to electrical generator sets, designed and equipped in such a way that energy is partly used for driving the generator sets to produce electrical energy and partly to supply heat for various purposes: industrial uses, district heating, etc. The unit is considered as CHP, if there is simultaneous production of useful heat and mechanical energy.
The data are representative at the national level. They are compared with the Decisions of the Energy and Water Regulatory Commission (EWRC) on the issuance of certificates of origin for electricity produced from combined production of electricity and heat. The data in the whole time series have been calculated by one methodology and are fully comparable.
Detailed data can be found on the NSI website under the heading 'Energy', Combined heat and power units (CHP units).
