Severnaya CHPP-21 is a 500 MW gas power station in Leningrad, Russia. It is operated by PJSC "TGC-1". Based on its capacity (estimated), it can supply roughly 563k homes (estimated). It ranks #156 of 678 Russia power plants by installed capacity. Commissioned in 1975, it is around 51 years old — an older, legacy facility. In context, gas supplies about 44.7% of Russia's electricity; the national grid averages 450 gCO₂/kWh (35.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1061634.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.
capacity: GEM tracker 2026 (location L100000407243); fuel: WRI source-record fuel
At 500 MW, Severnaya CHPP-21 is well above the median gas plant in Russia (200 MW). Technically it is described as Steam. Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by PJSC "TGC-1". All plants by this company →
This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 60.1°N — which shapes how much energy it can produce and how its output varies through the year.
Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).
For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with thermal cycling the leading environmental stress.
Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
The #74 largest gas power plant of 338 in Russia by capacity.
Russia has 338 gas power plants in this dataset, together about 145,594 MW of capacity.
Coordinates 60.0758, 30.4744 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Severnaya CHPP-21 is a 500 MW source-record gas power plant in Leningrad, Russia, commissioned in 1975.
Its output is enough to supply roughly 563,142 homes (estimated).
Severnaya CHPP-21 is operated by PJSC "TGC-1".
