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Asset classes
- Transmission Line80,968
- Power Plant32,429
- Substation / Converter7,614
- Oil & Gas Field7,055
- Coal / Uranium Mine5,382
- Pipeline4,951
- Cement Plant3,513
- Data Centre3,283
- Iron & Steel Plant1,293
- LNG Terminal1,198
- Grid Storage965
- Iron Ore Mine949
- Chemical Plant868
- Interconnector704
- Export Terminal519
- Refinery279
- Storage / Tank Farm38
- Oil / Commodity Contract19
- Hydrogen Project18
- Carbon Capture (CCS)16
Chokepoints
Slovakia — Energy Infrastructure
OverWatts maps 35 energy assets in Slovakia across 8 layers — the 103rd-largest mapped base of 157 countries. They include 15 power plants, 7 pipelines and 4 cement plants. Operating generation capacity is 5.3 GW, led by nuclear at 47%. Refining capacity is about 124 kb/d.
The companies named on the most assets are Enel SpA (6), EP Slovakia BV (6) and eustream (6), counting both ownership and operatorship. Half of Slovakia's mapped assets in service predate 1982 (median commissioning year of the 16 with a known date) and the oldest still listed is U. S. Steel Košice steel plant, dating from 1965. 2 projects are under construction or proposed, led by Bohunice nuclear power plant (1.2 GW).
Operating generation capacity by fuel
Utility-scale sites of 100 MW and above. Distributed generation — rooftop solar especially — is outside the tracker, so this runs below national installed capacity.
- nuclear2.5 GW +2.7 GW planned
- hydro1.7 GW
- gas817 MW
- coal311 MW +1.1 GW planned
Electricity generated by fuel · 2025
What the fleet actually produced — distinct from the installed capacity above.
- nuclear19.3 TWh 66%
- gas3.3 TWh 11%
- hydro3.2 TWh 11%
- biomass1.6 TWh 5%
- oil700 GWh 2%
- solar700 GWh 2%
- coal300 GWh 1%
Ember · source · CC-BY-4.0
On the interactive map
Browse by asset class
Under construction & proposed
- Bohunice nuclear power plantPower Plants · 1.2 GW · nuclear
- Mochovce nuclear power plantPower Plants · 471 MW · nuclear · 2025
Largest assets
- Mochovce nuclear power plantPower Plants · 1.5 GW · nuclear · 1998
- Bohunice nuclear power plantPower Plants · 1.2 GW · nuclear
- Bohunice nuclear power plantPower Plants · 1.0 GW · nuclear · 1972
- Bohunice nuclear power plantPower Plants · 1.0 GW · nuclear · 1985
- Slovnaft BratislavaRefineries · 124 kb/d
- Čierny Váh hydroelectric plantPower Plants · 734 MW · hydro · 1982
- Čierny Váh hydroelectric plantGrid Storage · 734 MW · 1982
- Gabčíkovo hydroelectric plantPower Plants · 720 MW · hydro · 1992
- Vojany I power stationPower Plants · 660 MW · coal · 1965
- Slovakia – Ukraine interconnectionInterconnectors · 650 MW
- Novaky power stationPower Plants · 472 MW · coal · 1957
- Mochovce nuclear power plantPower Plants · 471 MW · nuclear · 2025
- Malženice power stationPower Plants · 436 MW · gas · 2011
- PPC Bratislava power stationPower Plants · 218 MW · gas · 1998
- U.S. Steel Kosice Works power stationPower Plants · 208 MW · coal · 2008
- Liptovská Mara hydroelectric plantPower Plants · 198 MW · hydro · 1975
- Liptovská Mara hydroelectric plantGrid Storage · 198 MW · 1975
- Slovnaft Refinery power stationPower Plants · 163 MW · gas · 1976
- Kosice power stationPower Plants · 103 MW · coal · 1967
- Ružín hydroelectric plantGrid Storage · 60 MW · 1972
- Baumgarten–Plavecky Peter Gas PipelinePipelines
- Ozdany-Velke Kapusany Gas PipelinePipelines
- Nitra-Velke Zlievke Gas PipelinePipelines
- Plavecky–Nitra Gas PipelinePipelines
- Velke Zlievce–Ozdany Gas PipelinePipelines
Biggest owners & operators
- Enel SpA6 17%
- EP Slovakia BV6 17%
- eustream6 17%
- Slovak Republic6 17%
- Slovenské Elektrárne AŞ6 17%
- CRH PLC2 6%
- Danucem Slovensko AS2 6%
- Slovnaft AS2 6%
Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.
Frequently asked
- How many energy assets does Slovakia have?
- OverWatts maps 35 in Slovakia across 8 asset classes — the 103rd-largest mapped base of the 157 countries covered.
- How much electricity generation capacity does Slovakia have?
- About 5.3 GW operating across 10 plants, mostly nuclear 47%, hydro 31% and gas 16%.
- Who owns Slovakia's energy infrastructure?
- Enel SpA is named as owner or operator on the most mapped assets (6), followed by EP Slovakia BV (6), eustream (6) and Slovak Republic (6).
- What energy projects are under construction in Slovakia?
- The largest under way or proposed are Bohunice nuclear power plant (1.2 GW) and Mochovce nuclear power plant (471 MW).