Hydropower generation by region in Slovenia
Slovenia: Hydropower generation by region was 3.99 terawatt-hours in 2025. ▲ Rising
Latest (2025)
3.99 terawatt-hours
Change on year
down 25.2%
World rank
46th
of 80 countries
All-time high
6.09 terawatt-hours
in 2014
All-time low
2.96 terawatt-hours
in 2003
Years of data
36
1990–2025
Hydropower generation by region in Slovenia, 1990–2025
Source: Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data. Measured in terawatt-hours.
Analysis
Slovenia recorded 3.99 terawatt-hours for hydropower generation by region in 2025.
The figure is down 25.2% on the previous year and up 4.9% over ten years.
Over the whole period, hydropower generation by region in Slovenia peaked at 6.09 terawatt-hours in 2014 and was at its lowest, 2.96 terawatt-hours, in 2003.
That places Slovenia 46th out of 80 countries with data for 2025, putting it in the middle of the range.
The long-run direction has been consistently rising across the 36 years of available data.
Hydropower generation by region in Slovenia, year by year
| Year | terawatt-hours | Change |
|---|---|---|
| 1990 | 2.97 terawatt-hours | — |
| 1991 | 3.61 terawatt-hours | +21.3% |
| 1992 | 3.42 terawatt-hours | -5.1% |
| 1993 | 3.04 terawatt-hours | -11.3% |
| 1994 | 3.4 terawatt-hours | +12.0% |
| 1995 | 3.25 terawatt-hours | -4.3% |
| 1996 | 3.67 terawatt-hours | +12.8% |
| 1997 | 3.09 terawatt-hours | -15.7% |
| 1998 | 3.45 terawatt-hours | +11.6% |
| 1999 | 3.74 terawatt-hours | +8.4% |
| 2000 | 3.83 terawatt-hours | +2.5% |
| 2001 | 3.8 terawatt-hours | -1.0% |
| 2002 | 3.31 terawatt-hours | -12.7% |
| 2003 | 2.96 terawatt-hours | -10.7% |
| 2004 | 4.09 terawatt-hours | +38.5% |
| 2005 | 3.46 terawatt-hours | -15.5% |
| 2006 | 3.59 terawatt-hours | +3.8% |
| 2007 | 3.27 terawatt-hours | -9.1% |
| 2008 | 4.02 terawatt-hours | +23.0% |
| 2009 | 4.71 terawatt-hours | +17.3% |
| 2010 | 4.52 terawatt-hours | -4.2% |
| 2011 | 3.56 terawatt-hours | -21.2% |
| 2012 | 3.9 terawatt-hours | +9.5% |
| 2013 | 4.63 terawatt-hours | +18.7% |
| 2014 | 6.09 terawatt-hours | +31.6% |
| 2015 | 3.81 terawatt-hours | -37.5% |
| 2016 | 4.5 terawatt-hours | +18.3% |
| 2017 | 3.87 terawatt-hours | -14.1% |
| 2018 | 4.7 terawatt-hours | +21.6% |
| 2019 | 4.48 terawatt-hours | -4.8% |
| 2020 | 4.93 terawatt-hours | +10.2% |
| 2021 | 4.71 terawatt-hours | -4.5% |
| 2022 | 3.15 terawatt-hours | -33.2% |
| 2023 | 5.02 terawatt-hours | +59.5% |
| 2024 | 5.34 terawatt-hours | +6.3% |
| 2025 | 3.99 terawatt-hours | -25.2% |
Slovenia compared with similar countries
- Slovenia's 3.99 terawatt-hours is above the median for high income countries, which is 3.45 terawatt-hours, 1.2× the median. (47 countries reporting)
- Slovenia's 3.99 terawatt-hours is above the median for Europe & Central Asia, which is 3.99 terawatt-hours, 1.0× the median. (39 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 3.36 terawatt-hours | 2.97 terawatt-hours | 3.74 terawatt-hours | 10 |
| 2000s | 3.7 terawatt-hours | 2.96 terawatt-hours | 4.71 terawatt-hours | 10 |
| 2010s | 4.41 terawatt-hours | 3.56 terawatt-hours | 6.09 terawatt-hours | 10 |
| 2020s | 4.52 terawatt-hours | 3.15 terawatt-hours | 5.34 terawatt-hours | 6 |
Countries ranked near Slovenia
More energy & mining data for Slovenia
- Fossil fuel consumption by fuel, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, annual growth rate -2.87 % change on previous year (2025)
- Coal consumption, per capita 0 terawatt-hours per person (2025)
- Coal consumption, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, per capita 0 terawatt-hours per person (2025)
- Coal production, per capita 0 terawatt-hours per person (2024)
- Coal production, per unit of GDP 0 terawatt-hours per US$ of GDP (2024)
- Fossil fuel consumption by fuel, per capita 0 terawatt-hours per person (2025)
- Fuel imports 6.9% (2024)
Frequently asked questions
- What is hydropower generation by region in Slovenia?
- Hydropower generation by region in Slovenia was 3.99 terawatt-hours in 2025, according to Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data.
- What is the highest hydropower generation by region recorded in Slovenia?
- The highest recorded value was 6.09 terawatt-hours in 2014.
- What is the lowest hydropower generation by region recorded in Slovenia?
- The lowest recorded value was 2.96 terawatt-hours in 2003.
- How does Slovenia rank for hydropower generation by region?
- Slovenia ranks 46th out of 80 countries with data for 2025.
- Is hydropower generation by region rising or falling in Slovenia?
- Over the last ten years it is up 4.9%. The long-run trend across the full record is rising.
- Where does this Slovenia data come from?
- The figures come from Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data, published as part of Hydropower generation by region. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 36 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Figures are based on gross primary hydroelectric generation and do not account for cross-border electricity supply.