Russia’s floating nuclear plant cut an Arctic town’s heating pollution from 11.64 to 2.28 tonnes

Pevek, a port town of about 5,000 people on Russia’s Arctic coast, now burns far less fuel to stay warm. Operators of the floating nuclear plant Akademik Lomonosov say gross pollutant emissions into the atmosphere fell almost fivefold, from 11.64 to 2.28 tonnes, after the vessel took over a large share of the town’s heating load. The figures are the operator’s own and have not been checked by an independent monitor.

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Akademik Lomonosov is a barge-mounted power station moored beside Pevek in the Chukotka region, in operation commercially since May 2020 and described as the only floating nuclear plant running anywhere. Heat from it has reached the town’s network since 2022, and the emissions comparison covers the period in which it took over part of the town’s heating load. The report does not say which existing boilers it displaced.

The 11.64 to 2.281 tonne comparison

The numbers were reported by World Nuclear News on 30 October 2026, based on information from the plant’s operators and Rosatom. The arithmetic implies an 80% reduction in gross emissions, which is what almost fivefold means when 11.64 divides by 2.281 to give about 5.1. The report gives no breakdown by pollutant, no baseline year and no figure for the share of Pevek’s heating the plant now provides, and each omission limits what an outside reader can conclude.

Those gaps matter because heating emissions depend on weather as much as on fuel. A mild winter lowers burning, and a cold one raises it, so a before-and-after pair of totals from different years may partly reflect temperature rather than the plant. Without the baseline year, a reader cannot separate the plant’s effect from the weather’s, and the operator’s report does not offer that separation.

Radiation stations, Chaunskaya Bay and the 10% finding

The operator also reported its environmental monitoring. Eleven automated radiation monitoring stations operate around the plant, with four more inside Pevek itself. According to the report, air emissions, water discharges, soil impacts and waste generation all meet established standards, averaging less than 10% of the maximum permissible values. Rosatom adds that monitoring of Chaunskaya Bay in the East Siberian Sea shows no significant changes and no negative effect on the ecosystem.

Vladislav Kuznetsov, the governor of Chukotka, said the environmental agenda is the region’s number one priority and that the fragile Arctic demands particular attention to nature, human health and Pevek’s future. Dzhumberi Tkebuchava, first deputy director general of Rosenergoatom, called the plant a unique energy facility that the international community watches closely, and said environmental monitoring at Russia’s nuclear stations improves each year. Both men speak for the regional government or the operating company, which are parties to the project rather than outside reviewers, a distinction that matters when the emissions figures themselves come from the same operator.

Two KLT-40S reactors and the plan for four more floating units

Akademik Lomonosov carries two KLT-40S reactors rated at 35 MWe each, of a type related to those used on an earlier generation of nuclear icebreakers. Beyond Pevek, it supplies energy for mining development in the Baimskaya ore zone and, per the operators, has the capacity to serve a city of up to 100,000 people. In January 2025 World Nuclear News reported that it had generated its first billion kilowatt-hours and supplies about 60% of the energy for western Chukotka and Chersky in Yakutia.

Rosatom, the state nuclear corporation whose corporate site lists its projects, is constructing four more floating power units. Export-oriented versions would have at least 100 MWe, a design life of up to 60 years and RITM-200M reactors derived from the ones on its newest icebreakers. Additional detail on reactors of this scale appears in the World Nuclear Association’s page on nuclear power in Russia.

The plant’s path to Pevek’s grid began earlier. Rostechnadzor’s regional branch issued a statement of conformity confirming construction to project documentation, and Rosprirodnadzor approved the project, after which Rosenergoatom’s general director Andrey Petrov signed off the commissioning, as World Nuclear News reported on 22 May 2020. Electricity had flowed into the isolated Chaun-Bilibino grid since 19 December 2019. The station has a total capacity of 70 MW electric and 50 Gcal an hour of heat, and it is slated to become Chukotka’s main energy source once the Bilibino nuclear plant shuts down. At that stage it covered about 20% of the Chaun-Bilibino energy centre’s demand, and the latest report does not publish a current share of demand.

Natalia Tarasova, the plant’s deputy director for human resources management, said in the earlier report that the past year was a landmark one and that the first fuel campaign had been completed successfully, a notable hurdle in Arctic conditions. What is still missing from the public record is the independent check: no outside body is cited as having audited either the emissions comparison or the radiation readings.

This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.

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