Kiisa AREJ 2 is a 251.1 MW gas power station in Harju, Estonia. It is operated by Elering AS [100%]. Based on its capacity (estimated), it can supply roughly 283k homes (estimated). It ranks #4 of 18 Estonia power plants by installed capacity. Commissioned in 2013, it is around 13 years old — relatively modern. In context, gas supplies about 1.3% of Estonia's electricity; the national grid averages 319 gCO₂/kWh (59.6% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1022394.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000408763; fuel: WRI GPPD
In context: how this plant compares
Technically it is described as Engine. 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.
Key facts
- Share of Estonia gas capacity
- 54.8% of 458 MW across 2 plants in this dataset
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest gas plants in Estonia
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Elering AS [100%].
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 warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 59.2°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 84% 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: 91/100 — 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
This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with marine corrosion the leading environmental stress.
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 #1 largest gas power plant of 2 in Estonia by capacity.
Estonia has 2 gas power plants in this dataset, together about 458 MW of capacity.
Nearby power plants
- IRU Elektrijaam · Gas · 207 MW · Harju
- Paldiski · Wind · 44 MW · Harju
- Pakri · Wind · 18.4 MW · Harju
- Aulepa · Wind · 48 MW · Laeaene
- Vanakula · Wind · 9 MW · Laeaene
- Tooma-Esviere Wind Park · Wind · 36 MW · Laeaene
Location
Coordinates 59.2439, 24.7064 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Kiisa AREJ 2?
Kiisa AREJ 2 is a 251.1 MW gas power plant in Harju, Estonia, commissioned in 2013.
Who operates Kiisa AREJ 2?
Kiisa AREJ 2 is operated by Elering AS [100%].