Omsk CHP-4 power station

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Omsk CHP-4 power station (Омская ТЭЦ-4) is an operating power station of at least 385-megawatts (MW) in Omsk, Sovetsky, Russia with multiple units, some of which are not currently operating.

Location

Table 1: Project-level location details

Plant name	Location	Coordinates (WGS 84)
Omsk CHP-4 power station	Omsk, Sovetsky, Omsk, Omsk, Russia	55.084459, 73.211755 (exact)

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Unit-level coordinates (WGS 84):

• Unit 4, Unit 5, Unit 6, Unit 7, Unit 8, Unit 9: 55.084459, 73.211755

Project Details

Table 2: Unit-level details

Unit name	Status	Fuel(s)	Capacity (MW)	Technology	CHP	Start year	Retired year
Unit 4	Operating	coal: subbituminous	50	subcritical	yes	1968	–
Unit 5	Retired	coal: subbituminous	50	subcritical	yes	1968	2015
Unit 6	Operating	coal: subbituminous	100	subcritical	yes	1971	–
Unit 7	Operating	coal: subbituminous	100	subcritical	yes	1971	–
Unit 8	Retired	coal: subbituminous	100	subcritical	yes	1971	2011
Unit 9	Operating	coal: subbituminous	135	subcritical	yes	1978	–

Table 3: Unit-level ownership and operator details

Unit name	Owner	Parent
Unit 4	Territorial Generating Company No 11 JSC [100%]	Inter RAO PJSC [100.0%]
Unit 5	Territorial Generating Company No 11 JSC [100%]	Inter RAO PJSC [100.0%]
Unit 6	Territorial Generating Company No 11 JSC [100%]	Inter RAO PJSC [100.0%]
Unit 7	Territorial Generating Company No 11 JSC [100%]	Inter RAO PJSC [100.0%]
Unit 8	Territorial Generating Company No 11 JSC [100%]	Inter RAO PJSC [100.0%]
Unit 9	Territorial Generating Company No 11 JSC [100%]	Inter RAO PJSC [100.0%]

Project-level coal details

• Coal source(s): Ekibastuz coal

Ownership Tree

This ownership tree is part of the Global Energy Ownership Tracker, a project of Global Energy Monitor.

Background

The 385-MW coal-fired Omsk CHP-4 power station is owned by TGC-11, which in turn is owned by Inter RAO.

The power station runs on both Ekibastuz coal (from Kazakhstan) and natural gas, according to TGC-11's website. However the System Operator's document published in early 2023 stated only coal as the operating fuel.

As of June 2021 and later on, the TGC-11 website and other sources list the plant with 385 MW of installed capacity. Unit 5 (50MW) was retired in 2015 which brought the installed capacity to 385MW. Unit 8 (100MW) must have been retired some time before 2012.

In 2021 the power plant produced 1,280 million kWh of electricity, 1,253 million kWh in 2020.

Environmental impact

In 2017 it was reported that the plant received a permit to expand its ash dump without its Environmental Impact Assessment (EIA) for the expansion being approved. In November 2018 it was reported that the plant's operator TGC-11 has refused to sign an openness agreement with the Ministry of the Environment that would allow for monitoring of emissions.

In December 2021, reports emerged that the Omsk CHP-4 power station had violated environmental regulations by releasing harmful emissions in excess of amounts specified in its permits. According to news reports, there were no standards in place for regulating the coal dust emissions.

In September 2022, the court of Omsk ordered TGC-11 to eliminate violations of environmental regulations with respect to all the CHPs in Omsk, including at CHP-4. The timeframe to do this was from October 2022 to February 2023.

In December 2024 it was reported that the plant completed the modernization of the electrostatic precipitator.

In

Safety violations

In November 2019 an inspection of the plant found that it had failed to comply with hygiene and sanitation standards for its workers.

In December 2021, the Sovetsky District Court of Omsk ordered that TGC-11 halt construction on a new fuel oil tank at Omsk CHP-4 power station. The Court found that construction was taking place without adhering to regulations and without the approval of government experts, which created an increased risk of accidents and emergencies.

Modernization

The Omsk CHP-4 power station was selected for modernization as part of the Russian program for the modernization of thermal generation (known as KOMMod). An overhaul of one of its turbines was completed in 2021. The head of the Russian Ecological Society, Rashid Ismailov, argued that the modernization program should not be funded by taxpayers since the coal-fired power station is one of the main emissions sources in Omsk, which has the fifth-worst air quality of any Russian city.

The power station was also included in KOMMod program for 2022-2024 where the turbine of 100 MW (Т-100/120-130-2) was to be refurbished, presumably, at Unit 6. Additionally, as part of the KOMMod 2025, the turbine at unit 9, with capacity of 135 MW (ПТ-135/165-130/15), will be refurbished. Modernization will impact units #6, 7 and 9, with expected completion dates of 2026, 2022, and 2025 respectively. As of 2025, the timing for completing the modernization of Unit 9 was said to be 2025, while for Unit 6 - 2026.

Plans to Convert to Gas

Plans to convert the station to gas were mentioned in April 2023. The press service of TGK-11 noted that currently it is not technically possible to receive gas in the required volumes, but several gas companies are exploring ways to eliminate these infrastructure restrictions. Another source discussed that as the plants were included in the KOMMod program, it is prohibited to make changes to the units' configuration for 25 years so converting the units to gas it no feasible before 2050.

Talks of potential conversion of the plant to gas continued in 2024. Connecting the plants in Omsk will require the construction of a new main gas pipeline and an increase in the capacity of existing pipes. Gazprom said that the required volume of gas for CHP-4 and CHPP-5 may not be available until 2028–2029. The boilers at the thermal power plant were originally designed to operate on coal, so they need to be adapted to use gas. Rebuilding one boiler takes eight to ten months and is only possible during the off-season, so as not to interrupt the supply of heat and electricity. Gas is twice as expensive as coal, which will lead to an increase in the tariff. To compensate for the preferential tariff, it will be necessary to allocate about 500 million rubles annually from the regional budget. In the most optimistic scenario, the conversion of the plant will take three to four years, starting from the moment all organizational issues are resolved and the infrastructure is provided. However, given current statements, the process may drag on until the end of the decade. To successfully implement the project, the region will have to find significant funds.

As of April 2025, conversion of the plant to gas was still being discussed, but no official decisions were taken.

Articles and Resources

Additional data

To access additional data, including an interactive map of coal-fired power stations, a downloadable dataset, and summary data, please visit the Global Coal Plant Tracker on the Global Energy Monitor website.