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 2019, the Daugava HPPs generated 2 TWh of electricity, which constituted 42% of the Group’s total electricity output. The electricity generation in 2019 was 14% lower than in the previous year due to significantly lower water inflow in the Daugava River than the multiannual average inflow for the second year in a row.

Installed electrical capacity

1,558 MW

Electricity output

2,047 GWh

In 2019, investments in the Daugava HPPs’ assets amounted to EUR 21.4 million, including nearly EUR 17 million invested in the programme for the reconstruction of hydropower units, which will ensure their operation for the next 40 years. The programme provides for the reconstruction of 11 hydropower units, of which five were commissioned by the end of 2019. The reconstruction process is scheduled for completion in 2023, and the total cost of the programme is expected to exceed EUR 200 million. By the end of 2019, the investments already made amounted to EUR 166 million.

Replacement of outdated hydro turbines contributes to an increase in their capacity, efficiency rate and electricity output.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 tons, 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.

The tour is a virtual, visually unique and explorative journey along the Daugava River, introducing the Riga, Ķegums, and Pļaviņas HPPs and revealing many interesting points about the generation of electricity at hydropower plants and other related aspects – green energy, renewal of fish stocks, the specifics of the spring flooding season, reservoir repairs, etc.

The main idea of the project is to show the generation process at the HPPs in an attractive and simplified way.  

The tour combines interesting facts and visual materials in the form of photos and videos about the Daugava HPPs and the generation of electricity in hydropower plants in general.  

Panoramic 360° photographs make it possible to go on a virtual in-person visit to the Daugava HPPs of Latvenergo AS, showing both the exterior and the interior of the generation facilities.

Furthermore, cross-sections of all the Daugava HPPs, supplemented with interactive elements, help to grasp the basic makeup and functioning of a HPP, and an animated video tells about the Daugava HPPs and their significance in Latvia and the region.

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 2019, the CHPPs generated historically the largest amount of electricity – 2.8 TWh. This is 5% more than in the previous year and accounts for 57% of the Group’s total electricity output.

The amount of thermal energy generated by CHPP-1 and CHPP-2 in 2019 was 1.6 TWh, a 20% decrease compared to the previous year.

 

Electricity output at CHPPs

2,780 GWh

Thermal energy output at CHPPs

1,603 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 and the duration of the heating season. Natural gas, the friendliest type of fossil fuel, is used as the primary fuel for the CHPPs.

The operation of the Latvenergo AS CHPPs 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 2019, both plants played a very important role in meeting the demand for electricity, as the hydro energy output both in Latvia and throughout the Nord Pool region was comparatively low, and capacity shortages were observed in regional interconnections for the second year in a row due to dry weather conditions. In 2019, the CHPPs of Latvenergo Group generated historically the largest amount of electricity – 2.8 TWh. This is 5% more than in the previous year and accounts for 57% of the Group’s total electricity output.

The high electricity output at the CHPPs was enabled by their competitiveness, market demand for electricity and limited regional options to meet this demand. In 2019, the output at the Estonian oil shale plants was decreased due to the high level of harmful emissions. The upgraded CHPPs of Latvenergo AS, on the other hand, emit very low amounts of CO2 and use energy resources extremely efficiently. The CHPPs are expected to become even more competitive in the future, once the largest heat accumulation tank in the Baltics is built, further reducing the amount of COemissions. The construction of the tank on the territory of CHPP-2 started in November 2019 and its completion is scheduled for the end of 2020.

The amount of thermal energy generated by CHPP-1 and CHPP-2 in 2019 was 1.6 TWh, a 20% decrease compared to the previous year. The drop was due to the increase in competition in the thermal energy market – five new heat producers have started operating in the thermal energy zones of the Latvenergo AS CHPPs since 2018 – as well as warmer weather during the heating season. The thermal energy generated is sold to Rīgas siltums AS at regulated tariffs.



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

A heat storage unit in built in the territory of CHPP-2 of Latvenergo AS to become the largest and the only heat storage unit in the Baltic countries with the volume of heat carrier of 18 thousand m³. 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.


The foundations were laid in autumn 2019, and in January 2020 the construction of the roof of the heat storage tank started.

The project is implemented with co-funding of the European Union Cohesion Fund. The total project costs amount to EUR 9,045,041.85.

CHPP-1

Start of operations - 1955
Electrical capacity - 144 MW
Thermal capacity - 493 MW
Energy source - natural gas

CHPP-1 was completely reconstructed in 2005. Two gas turbines, one steam turbine and three water boilers are operated at the plant.

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.

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 supply of thermal energy in the city of Liepaja as well as generation of electricity in cogeneration mode. In 2019, Liepaja plants generated 240 GWh of thermal energy and 47 GWh of electricity. During the year, 63 new customers with the total expected load of 4.2 MW were connected to the central heating network.

Ainazi WPP

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

In 2013, full renovation of both generators was completed. In 2019, 1.7 GWh of electricity were generated at Ainazi WPP.

Aiviekste HPP

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

Electricity generation at Aiviekste HPP was started in 1925, and it was the largest hydropower plant in Latvia until Kegums HPP was put in operation. In 2019, 3.4 GWh of electricity were generated at Aiviekste HPP.