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Zeran power station

Gas power plant in Mazowieckie, Poland. Approximate location 52.2947, 20.99334.

GasMazowieckiePolandCCGT · HRSG

Zeran power station is a 490 MW gas power station in Mazowieckie, Poland. It is operated by ORLEN SA. Based on its capacity (estimated), it can supply roughly 552k homes (estimated). It ranks #45 of 246 Poland power plants by installed capacity. Commissioned in 2021, it is around 5 years old — recently built. In context, gas supplies about 14.3% of Poland's electricity; the national grid averages 589 gCO₂/kWh (31.5% low-carbon) (2025).

490MW installed capacity
1HRSG unit(s)
551,880homes powered (est.)
2021commissioned (~5 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id GOGPT_zeran_poland.

Data status

Known data

FacilityZeran power station GEM-GOGPT
CountryPoland · Mazowieckie GEM-GOGPT
Coordinates52.2947, 20.99334 GEM-GOGPT
FuelGas GEM-GOGPT
MW installed capacity490 MW GEM GOGPT; source record
OwnerORLEN SA GEM-GOGPT
Commissioned2021 GEM-GOGPT
TechnologyCCGT · HRSG GEM-GOGPT

Calculated from dataset

CO₂ emissions772,632 t CO₂·a⁻¹ calculated
Capacity rank in country#45 / 246 calculated
Fuel-specific rank in country#6 / 37 calculated
Capacity vs country/fuel peers3.48× · 141 MW · n=37 calculated
Homes-powered equivalent551,880 calculated
Climate8.2°C · HDD 3,567 derived from coordinates
Environmental severityC2 · 26/100 derived from coordinates

Not available

GWh reported / yrNot available not in dataset

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.

capacity: GEM GOGPT; fuel: GEM GOGPT

In context: how this plant compares

At 490 MW, Zeran power station is well above the median gas plant in Poland (141 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). 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.

Capacity vs largest gas plants in Poland

Grudziądz power station: 1,120 MW1kGrudziądz …Adamow power station: 600 MW600Adamow pow…Jaworzno power station: 600 MW600Jaworzno p…Ostrów Wielkopolski power station: 600 MW600Ostrów Wie…Gdańsk CCGT power station: 561 MW561Gdańsk CCG…Zeran power station: 490 MW490Zeran powe…EC Włocławek: 465 MW465EC Włocław…Lagisza power station: 413 MW413Lagisza po…

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by ORLEN SA.

Local climate & thermal context

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 52.3°N — which shapes how much energy it can produce and how its output varies through the year.

8.2°Cannual mean temp
3,567heating degree-days (base 18°C)
9cooling degree-days (base 18°C)
86 melevation

Monthly mean temperature

J: -2 °CJF: -1 °CFM: 3 °CMA: 8 °CAM: 14 °CMJ: 17 °CJJ: 18 °CJA: 18 °CAS: 13 °CSO: 8 °CON: 3 °CND: 0 °CD18 °C

Heating degree-days here run 45% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 77/100 — this site sits in the top third of the power plants we cover by heating degree-days.

A gas turbine here also runs ~0% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

Site climate & environmental severity

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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.

C2ISO 9223 corrosivity (indicative)
26/100environmental-severity index
20.5°Cseasonal temperature swing
225 kmdistance to coast

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.

How it compares & nearby plants

The #6 largest gas power plant of 37 in Poland by capacity.

Poland has 37 gas power plants in this dataset, together about 8,201 MW of capacity.

Nearby power plants

Location

Coordinates 52.2947, 20.99334 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Zeran power station?

Zeran power station is a 490 MW gas power plant in Mazowieckie, Poland, commissioned in 2021.

How many homes can Zeran power station power?

Its output is enough to supply roughly 551,880 homes (estimated).

Who operates Zeran power station?

Zeran power station is operated by ORLEN SA.

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