Facts

Latvenergo Group is the leading producer of electricity and thermal energy in Latvia.

Latvenergo Group has a balanced and environmentally friendly energy generation portfolio, consisting mostly of hydropower plants and highly efficient combined heat and power plants.

Most of the electricity and thermal energy is generated by the three Daugava hydropower plants (HPPs) and two combined heat and power plants (CHPPs) of Latvenergo AS. Energy is also generated by Liepājas enerģija SIA, Aiviekste HPP and Ainazi Wind Power Plant (WPP).

Latvenergo Group is one of the most environmentally friendly electricity producers in the European Union

Installed electrical capacity at the Group's generation facilities

Energy generated at Latvenergo Group

Share of energy resources in the electricity output

Daugava hydropower plants

The Daugava HPPs are the biggest hydropower plants in the country, providing a large share of renewable energy not only in the Group, but also in Latvia as a whole.

In 2020, the Daugava HPPs generated 2.5 TWh of electricity, which constituted 59% of the Group’s total electricity output and was a 23% increase compared to the previous year. The higher output of the Daugava HPPs was determined by the normalisation of the Daugava inflow compared to the atypically low inflow in 2019.

Installed electrical capacity

1,558 MW

Electricity output

2,528 GWh

In 2020, investments in the Daugava HPPs’ assets amounted to EUR 21 million, including EUR 18.5 million invested in the programme for the reconstruction of hydropower units, which will ensure their operation for more than 40 years. The programme provides for the reconstruction of 11 hydropower units that have not been reconstructed yet, of which six were commissioned by the end of 2020. The total cost of the programme will exceed EUR 200 million. Investments of EUR 184.6 million were already made by the end of 2020.

Replacement of hydro turbines contributes to an increase in their capacity, efficiency rate and electricity output. This promotes reliable, efficient and competitive operations of the Daugava HPPs within the overall energy system and in the electricity market. More efficient use of water resources mitigates the negative impact of the Group on climate change. Each megawatt hour of electricity generated by the Daugava HPPs reduces CO2 emissions by 0.345 t/MWh, assuming that this energy would otherwise be generated in condensation mode at combined heat and power plants by using natural gas as fuel.

Investments in the Daugava HPPs


The ability of the Daugava HPPs to generate electricity depends on the water inflow in the Daugava River. During the flooding season, it is possible to cover the demand for electricity of all Latvenergo Group’s customers and trade the excess on the Nord Pool exchange. Outside the season, the Daugava HPPs provide for the possibility to accumulate water and adapt generation of electricity when the demand and prices on the exchange are higher.

Plavinas HPP

Start of operations - 1965
Capacity - 908 MW
Hydropower units - 10
Energy source - water

Plavinas HPP is the largest hydropower plant by installed capacity in the Baltic states and one of the largest in the European Union. It plays an important role in ensuring the stability of the Baltic power system in the event of unplanned outages or accidents at base plants. Plavinas HPP also serves as a synchronous compensator for voltage regulation in high voltage electricity networks.

Riga HPP

Start of operations - 1974
Capacity - 402 MW
Hydropower units - 6
Energy source - water

Riga HPP is the newest of the Daugava hydropower plants. It also serves as a synchronous compensator for voltage regulation in high voltage electricity networks.

Kegums HPP

Start of operations - 1939
Capacity - 248 MW
Hydropower units - 7
Energy source - water

Kegums HPP is the oldest Daugava hydropower plant. It consists of two separate power plants built at different times on the right and left banks of the Daugava River.

The combined heat and power plants of Latvenergo AS


In 2020, the CHPPs generated 1.7 TWh of electricity, which constitutes 40% of the Group’s total electricity output. Compared to previous years, the decrease in output was influenced by electricity market conditions and lower thermal energy demand.

The amount of thermal energy generated by CHPP-1 and CHPP-2 in 2020 was 1.5 TWh, an 8% decrease compared to the previous year. The decrease was influenced by warmer weather. The thermal energy generated is sold to Rīgas siltums AS at regulated tariffs.

 

Electricity output at CHPPs

1,685  GWh

Thermal energy output at CHPPs

1,475 GWh


The upgraded CHPPs of Latvenergo AS are mostly operated in the highly efficient cogeneration mode in accordance with the thermal energy demand, which in turn depends on weather conditions, the duration of the heating season and competition in the thermal energy market. Natural gas, the environmentally friendliest type of fossil fuel, is used as the primary fuel for the CHPPs. The operation of these plants can be flexibly adjusted to the electricity market conditions and guarantees a significant baseload electricity capacity for Latvia. Both CHPPs can cover Latvian electricity consumption almost completely in circumstances where, due to certain factors, electricity imports from foreign countries are limited.

In 2020, the construction of the largest heat storage system in the Baltics continued at CHPP-2 and it is expected to be commissioned in 2021. The heat storage tank of 17,800 m3 will make it possible to accumulate the thermal energy generated in cogeneration mode and optimise the adjustment of the CHPP operating modes to the changing market conditions and to cover peak loads. The heat storage system is expected to ensure storing of thermal energy (at least 65 GWh/year), primary energy savings (not less than 2.4 GWh/year), and reduction in CO2 emissions (not less than 9,000 t/year). In addition, the CHPP-2 heat storage system will increase the security of heat supply of the Riga district heating system on the right bank of the Daugava.

In 2020, modernisation of the CHPP-1 gas turbines was also performed, as a result of which the installed electrical capacity of the plant was increased by 10% (14 MW) and the NOx concentration in flue gases, depending on the chosen operating mode, was reduced by 15-25%.



Creation of a heat storage system at CHPP-2 generating facility

The construction of a heat storage unit in the territory of CHPP-2 of Latvenergo AS has completed becoming the largest and the only heat storage unit in the Baltic countries with the volume of heat


carrier of 18 thousand m 3. An extensive and modern solution will ensure more efficient use of heating fuel in the country, reduce consumption of energy sources and increase competitiveness of CHPPs.

CHPP-1

Start of operations - 1955
Electrical capacity - 158 MW
Thermal capacity - 493 MW
Energy source - natural gas

In 2005, a completely new plant was commissioned in the territory of the CHPP-1 and the old plant was closed down. Two gas turbines, one steam turbine and three water boilers are operated at the CHPP-1. In 2020, the CHPP-1 gas turbines were modernised.

CHPP-2

Start of operations - 1973
Electrical capacity - 832 MW (in cogeneration mode), 881 MW (in condensation mode)
Thermal capacity - 1,124 MW
Energy source - natural gas

Reconstruction of two power units was carried out from 2006 to 2013. Currently, CHPP-2 is the most efficient and advanced combined-cycle power plant in the Baltics. Two combined-cycle gas turbine units and five water boilers are operated at the plant. In 2019, the construction of the largest heat storagesystem in the Baltics started at CHPP-2 and it is expected to be commissioned in 2021.

Liepājas enerģija SIA and Small Plants

Liepājas enerģija SIA

Founded - 2005
Electrical capacity - 6 MW
Thermal capacity - 221 MW
Energy source - natural gas, woodchips

Latvenergo AS holds a 51% share in Liepājas enerģija SIA. The company ensures generation, transmission, distribution and trade of thermal energy in the city of Liepaja as well as generation of electricity in cogeneration mode. In 2020, the company celebrated its 15th anniversary. During this time, EUR 22.5 million was invested in the reconstruction of heating networks and the construction of new connections, and approximately 100 kilometres, or 99.9% of the Liepaja heat supply system, were reconstructed. In the reporting year, the Liepaja plants generated 227 GWh of thermal energy and 34 GWh of electricity. Contracts have been concluded for the connection of 45 new objects to district heating networks with a total planned capacity of 5.3 MW.

Ainazi WPP

Start of operations - 1995
Electrical capacity - 1 MW
Energy source - wind

In 2013, full renovation of both generators was completed. In 2020, 1.7 GWh of electricity were generated at Ainazi WPP.

Aiviekste HPP

Renovated - 1994
Electrical capacity - 0,8 MW
Energy source - water

Aiviekste HPP was the first hydropower plant in Latvia; it started generating electricity back in 1925. The reconstruction of the hydropower plant started in the reporting year. Renovating two existing hydropower units and setting up two new ones is expected to increase the plant’s capacity from 0.8 MW to 1.5 MW. In addition, the connection of Aiviekste HPP to the electricity network is also being rebuilt. The plant is expected to be commissioned in the first half of 2021. In 2020, 0.7 GWh of electricity were generated at Aiviekste HPP.