Manuals
lt ru

Elektrėnai Complex

Brief overview

Elektrėnai Complex (EC) has energy generation capacity of Ignitis Gamyba that produce electricity and heat and provides ancillary services. EC, including a reserve power plant, a combined-cycle unit as well as biofuel and steam boilers, is situated 2 km northeast of Elektrėnai town. After the shutdown of the Ignalina Nuclear Power Plant in 2010, EC became the largest source of electricity generation in Lithuania.

Combined-cycle gas turbine unit producing electricity since 2012

EC has installed electricity generation capacity of 1055 MW:

  • 2 units of 300 MW are in a reserve power plant
  • Even though all units are adapted for gas combustion and heavy fuel oil (HFO), the latter is used for production in the 7th and 8th units with smoke filters
  • Combined-cycle gas turbine unit (CCGT) – 445 MW

EC generated 1,2 TWh of electricity in 2020.

History

The reserve power plant (former Lietuvos Elektrinė) was built between the summer of 1960 and September 1972. Currently, it is the largest energy production plant in Lithuania, with a capacity of 1800 MW. The power plant used to operate at full operational capacity and would meet the total state electricity demand, it used to produce up to nine billion kWh of electricity.

Its operational role changed after Lithuania regained its independence. Ignalina Nuclear Power Plant became the major supplier of cheap electricity. That’s why the power plant became a reserve unit for the Ignalina Nuclear Power Plant in case of a sudden shutdown or when was needed to cover electricity demands during total blackouts.

With the changes in economic situation, the demand for alternative fuel sources increased. Due to the increase in oil prices, the combustion of heavy fuel oil, previously widely used, had to be limited. After performing industrial tests and installing appropriate equipment that fires emulsion (an electrostatic filter in the second unit has been used since 1995) the decision was made to switch to MSAR (oil emulsion, Multiphase Superfine Atomized Residue). In order to keep equipment in good condition, repair and maintenance works are carried out on a regular basis, together with the installation of modern innovations that increase reliability and economic use of the equipment. The reconstruction of the 330 kV the power plant distribution station was finished in 1997 and further modernization to enhance environmental safety of the plant was carried out. In addition, smoke cleaning filters were installed in the seventh and eighth units and low oxide output burners were mounted in all units except for the third and fourth units.

Combined Cycle Gas Turbine unit

After the shutdown of Ignalina Nuclear Power Plant in December 2010, Ignitis Gamyba set some new objectives. One of the most important objectives is to remain the primary production source of electricity in Lithuania while fulfilling electricity demands. In order to achieve the objective, a new 445 MW combined-cycle gas turbine (CCGT) unit was built. The unit was officially opened in October 2012. The unit produces enough electricity to cover 20–25% of Lithuania’s domestic demand. Moreover, the amount of natural gas used to produce the same amount of energy will be reduced by up to 30%. EC will continue its efficient operation in order to ensure energy security, reliability, and energy reserves of the state.

The overall efficiency of the CCGT unit exceeds 58%. It can generate enough electricity to cover 20–25% of Lithuania’s total demand. No one doubts its efficiency because the unit yields natural gas savings of 30%, generating the same amount of electricity as the units which are based on older technology. Lithuania will not be alone in experiencing benefits of Ignitis Gamyba CCGT unit project. The new unit will supply electricity to other Baltic States as well.

Investment

The unit’s construction cost amounted to EUR 376 million. The project was financed from the Ignalina International Decommissioning Support Fund. Funds were also provided by the European Bank for Reconstruction and Development, commercial banks and Ignitis Gamyba itself. An agreement with Spain’s concern Iberdrola Ingenieria y Construccion S.A.U. on the unit’s construction was signed at the end of April 2009 and it took over 3 years to build the unit.

Progress

Combined-cycle technology is widely used in the European energy sector. The EU’s strict emission standards helped achieve additional benefits in increasing the efficiency of fuel consumption in the field of electricity production. Much of outdated, ineffective and redundant equipment was replaced with fuel-efficient combined-cycle technology which can achieve an efficiency of up to 50–60%. Meanwhile, using conventional technology only 25–40% of fuel is converted into electricity. CCGT is currently one of the most efficient technologies compared to the old-fashioned thermal fossil fuel units. Due to high thermal efficiency, CCGT units do not use additional fuel and achieve higher capacity. The amount of emissions produced for every kilowatt hour of electricity is reduced and the unit’s productivity is significantly increased.

The CCGT unit in Elektrėnai was a second project implemented in the Baltic region, which used a 9FB gas turbine supplied by the world-famous company General Electric. This turbine is one of the most advanced in the world. The similar equipment was installed at Riga’s 2nd Power Station, which is the largest one in Latvia.