Nuclear power in Slovenia

nuclearchain.net/countries/slovenia/ · data: Global Energy Monitor (GNPT, August 2026), CC BY 4.0 · printed from the live page

Slovenia operates 1 nuclear power reactor across 1 site, with 0.7 GW of gross capacity.

Operating

0.7 GW gross

Under construction

Planned

incl. 1 announced

Retired

0 cancelled

Operating1circle area ∝ site capacity Coastlines, borders and lakes: Natural Earth (1:10 million, public domain), which is generalised, so a coastal plant can sit a couple of kilometres off its true shoreline. Site positions: Global Nuclear Power Tracker.

Operating fleet by type: PWR (1). Principal operator: Nuklearna Elektrarna Krško.

The government said in June 2026 that JEK 2, a new unit west of the existing Krsko plant, would be a priority. The planned referendum was cancelled in October 2024, and the coalition agreement continues the project without one. Krsko's 20-year lifetime extension was approved in January 2023. Policy position as read on 2026-11-03: World Nuclear Association, Nuclear Power in Slovenia (page dated 2026-10-28).

Operating capacity over time

First reactor online1983

Peak0.7 GW in 1983

Now0.7 GW 1 unit

2026 so farno change

Gross capacity of units that had started up and not been permanently shut down by 31 December each year (2026 is to date). Amber marks the peak, green the present.

Data table

Year	Units online	GW gross	Change, GW
1983	1	0.73	+0.73

Only years in which capacity changed are listed.

Share of electricity from nuclear power

In Slovenia, nuclear plants generated 39.3% of electricity in 2025, up from 38.2% in 2015. The share peaked at 42.0% in 2022, so it is 2.7 percentage points below its high.

Share of the country's total electricity generation that came from nuclear plants, by calendar year (1990 to 2025). Amber marks the high point, green the latest year. Source: Our World in Data from Ember and the Energy Institute, CC BY 4.0.

Data table

Year	Nuclear share, %
2025	39.3
2024	35.0
2023	36.0
2022	42.0
2021	36.6
2020	37.6
2019	36.6
2018	35.9
2017	39.2
2016	35.2
2015	38.2
2014	37.1
2013	33.5
2012	35.6
2011	39.1
2010	34.8
2009	35.0
2008	38.2
2007	37.9
2006	36.7
2005	38.9
2004	35.8
2003	37.7
2002	37.9
2001	36.3
2000	35.0
1999	35.4
1998	36.7
1997	38.1
1996	35.6
1995	37.1
1994	35.8
1993	33.1
1992	32.2
1991	38.9
1990	37.1

All units in Slovenia

Unit	Site	Status	Type	Gross MW	Online
Krško nuclear power plant 1	Krško nuclear power plant	Operating	PWR	727	1983
Krško nuclear power plant 2	Krško nuclear power plant	Announced	PWR	1,100	2035

Fuel supply exposure

The fuel families Slovenia's operating reactors take, and the fabricators our sources document as able to make each. This is capability, not contracts: it does not say who actually supplies a given plant.

Fuel family	Units	GW gross	Documented fabricators	Note
PWR (square-lattice) fuel	1	0.7	Westinghouse Electric Company, Framatome, KEPCO Nuclear Fuel, China National Nuclear Corporation, ENUSA Industrias Avanzadas, Mitsubishi Heavy Industries

See every country and who fabricates fuel.

Put this country on your own page: embed a card, or compare it with another country.

Follow Slovenia: Atom feed of large earthquakes near Slovenia plants. Outage changes are only tracked for a few countries; see the alerts page.

Sources

Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06
Nuclear share of electricity: Our World in Data, from Ember and the Energy Institute , CC BY 4.0 · retrieved 2026-10-28

How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data