Activities of heat plants and CHP plants
Data on activities of heat plants and CHP plants are compiled with an aim to find out the number of heat plants and CHP plants, volume of electricity and heat produced, capacity as well as to estimate heat balance in statistical regions.
Terms and definitions
Heat plant is energy transformation production unit producing heat for sale.
Heat plant consists of one or several devices producing heat (boilers).
Heat plants are divided into:
- public heat plants primary activity of which is generation of heat (division 35 of NACE Rev. 2);
- autoproducer heat plants are generating heat for their own use and partly for sale (NACE Rev. 2, except division 35 of NACE Rev. 2).
Total installed heating capacity
Simultaneous generation of electricity and heat in the same technological device and cycle.
Combined Heat and Power plant (CHP)
Power plant consisting of cogeneration devices and heat peak load boiler devices.
CHP plants are classified according to the purpose of production:
- public CHP plants main activity of which is production of electricity and heat (NACE Rev. 2 Division 35);
- autoproducer CHP plants that are generating electricity and heat for their own technological use and selling part of the produced heat (NACE Rev. 2, except NACE Rev. 2 Division 35).
Device or a complex of devices for simultaneous production of electricity and heat in a single technological process. Combined heat and power (CHP) equipment does not include devices used solely for the production of heat or electricity.
Electrical capacity (CHP has started its work at least three months before the end of the reference period)
Total heating capacity generated in devices producing heat if CHP plant has started its work at least three months before the end of the reference period.
Installed heating capacity of CHP plants that for the production of heat are using both cogeneration devices and water heating boilers is shown including capacity of these boilers.
Heat produced during the year by public combined heat and power plants and heat plants and autoproducer heat and power plants and heat plants producing heat for sale.
Oil and oil products, including liquefied petroleum gas, natural gas, liquefied natural gas and biomethane, shale, shale oil, coal, peat, fuelwood and other biomass, and bioliquids combusted for power generation.
Survey method and data source
Data are acquired with the help of full-scope survey from several data sources:
- CSB annual statistical report form 1-energy "Report on production of heat and electricity";
- Annex to the CSB annual statistical report form "Annex to the report 1-energy";
- CSB statistical report form 2-EK "Report on purchase and use of energy resources".
All CHP plants that have started their work at least three months before the end of the reference period.
Heat plants producing heat for sale. Heat plants using fuel only for heating and technological needs are not surveyed. Consumption of fuel in these heat plants is shown in the energy balance – "final consumption".
Information is compiled on all branches of national economy. Data in breakdown by fields are compiled by the main kind of economic activity. Until 2017 data of the table ENG100. Number of heat plants, capacity and produced heat data on heat produced in autoproducer heat plants differ from the information in energy balance, as transformation sector of the energy balance (in compliance with the international methodology) covers data on heat produced for sale in autoproducer heat plants.
Until 2012 in table ENG130 Number of combined heat and power plants (chp), electrical capacity, produced electricity and heat energy data on autoproducer CHP plants include all produced heat. Data differ from energy balance, because in transformation sector of energy balance only heat produced for sale is included.
Data are compiled and published in compliance with:
- Statistical Classification of Economic Activities (NACE Rev. 2);
- Classification of Administrative Territories and Territorial Units of the Republic of Latvia (CATTU);
- Combined Nomenclature (CN).
Contact person on methodology
Environment and Energy Statistics Section