Analytics, Energy, Latvia

Cogeneration is simultaneous production of heat energy and electricity in united cycle.

Heat and electricity produced in CHP plants in 2000 to 2010 (GWh)

In comparison with 2009, electrical power of cogeneration plants has increased by 1.4%. CHP plants of Riga had the highest installed electrical capacity – 876.3 MW.

Number of CHP plants and installed electrical capacity (MW) in 2009 and 2010 by statistical region

There are two types of CHP plants:

• public CHP plants primary activity of which is generation of heat energy (division 35 of NACE Rev.2.);
• autoproducer CHP plants are generating heat for their own production and technological use and partly for sale (NACE Rev.2., except division 35 of NACE Rev.2).

Out of 71 CHP plant active in 2010 56 were public cogeneration plants with installed electrical capacity 932.8 MW, it is 98.4% of total installed capacity of CHP plants, and 15 were autoproducer CHP plants with installed electrical capacity 14.7 MW.

Number of public CHP plants and installed electrical capacity (MW) in 2010

In 2010 for the production of heat energy and electricity CHP plants mainly used natural gas (98.1%), as well as biogas, fuelwood, coal, residual (heavy) fuel oils and bio-diesel oil.

Out of 71 CHP plant active in 2010 56 plants (both public and autoproducer) with total electric capacity 870 MW were active more than 6 months, of which:

• 3 combined-cycle turbines with electrical capacity 803 MW;
• 1 gas turbine with heat utilisation;
• 48 internal combustion engines with electrical capacity 61 MW;
• 3 steam backpressure turbines with electrical capacity 4 MW;
• 1 condensing steam turbine.

In June 2011 in section annual data of the CSB data base (www.csb.gov.lv) subject “Energy” several tables on activities of CHP plants in 2010 will be published:

• Number of CHP plants, electrical capacity, heat energy and electricity produced (EN18);
• CHP plants by fuel type (EN20);
• Heat balance in statistical regions and cities under state jurisdiction (EN23);
• Heat produced in autoproducer heat plants and CHP plants by kind of economic activity (EN24);
• Fuel consumed by autoproducer heat plants and CHP plants in breakdown by kind of economic activity (EN25);

¹P- power