Gabcikovo Hydroelectric Power Plant Slovakia is a 720 MW hydro power station in Trnavsky, Slovakia. It is operated by EP Slovakia BV [33%]; Enel SpA [33%]; Slovak Republic [34%]. Based on its capacity (estimated), it can supply roughly 721k homes (estimated). It ranks #6 of 37 Slovakia power plants by installed capacity. Commissioned in 1992, it is around 34 years old — long-established. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 10.9% of Slovakia's electricity; the national grid averages 95 gCO₂/kWh (85.2% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GEODB0042637.
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 · L100000603307; fuel: WRI GPPD
In context: how this plant compares
At 720 MW, Gabcikovo Hydroelectric Power Plant Slovakia is well above the median hydro plant in Slovakia (38.4 MW). Technically it is described as run-of-river. Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Slovakia hydro capacity
- 31.0% of 2,320 MW across 21 plants in this dataset
- Age among peers
- 7 of 8 dated hydro plants in Slovakia are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest hydro plants in Slovakia
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by EP Slovakia BV [33%]; Enel SpA [33%]; Slovak Republic [34%].
Local climate & thermal context
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 47.9°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 20% 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: 61/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness 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 #2 largest hydro power plant of 21 in Slovakia by capacity.
Slovakia has 21 hydro power plants in this dataset, together about 2,320 MW of capacity.
Nearby power plants
- Gönyűi Erőmű · Gas · 426.6 MW · Gyor-Moson-Sopron
- Cunovo Hydroelectric Power Plant Slovakia · Hydro · 24 MW · Gyor-Moson-Sopron
- Slovnaft Refinery power station · Gas · 163 MW · Bratislava
- PPC Bratislava CCGT CHP Power Plant Slovakia · Gas · 218 MW · Bratislavsky
- Windpark Bruck-Göttlesbrunn · Wind · 21 MW · Lower Austria
- Wind Park Hollern II · Wind · 37 MW · Lower Austria
Location
Coordinates 47.88, 17.5384 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Gabcikovo Hydroelectric Power Plant Slovakia?
Gabcikovo Hydroelectric Power Plant Slovakia is a 720 MW hydro power plant in Trnavsky, Slovakia, commissioned in 1992.
Who operates Gabcikovo Hydroelectric Power Plant Slovakia?
Gabcikovo Hydroelectric Power Plant Slovakia is operated by EP Slovakia BV [33%]; Enel SpA [33%]; Slovak Republic [34%].