Primary energy use by source in Slovenia
Slovenia: Primary energy use by source was 5.48 terawatt-hours in 2025. ▼ Falling
Latest (2025)
5.48 terawatt-hours
Change on year
down 39.4%
World rank
57th
of 79 countries
All-time high
18.3 terawatt-hours
in 1990
All-time low
5.48 terawatt-hours
in 2025
Years of data
36
1990–2025
Primary energy use by source in Slovenia, 1990–2025
Source: Energy Institute – Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data. Measured in terawatt-hours.
Analysis
Slovenia recorded 5.48 terawatt-hours for primary energy use by source in 2025. That is the lowest value across all 36 years on record.
The figure is down 39.4% on the previous year and down 55.8% over ten years.
Over the whole period, primary energy use by source in Slovenia peaked at 18.3 terawatt-hours in 1990 and was at its lowest, 5.48 terawatt-hours, in 2025.
That places Slovenia 57th out of 79 countries with data for 2025, putting it in the middle of the range.
The long-run direction has been consistently falling across the 36 years of available data.
Primary energy use by source in Slovenia, year by year
| Year | terawatt-hours | Change |
|---|---|---|
| 1990 | 18.3 terawatt-hours | — |
| 1991 | 16.71 terawatt-hours | -8.7% |
| 1992 | 17.41 terawatt-hours | +4.2% |
| 1993 | 16.59 terawatt-hours | -4.7% |
| 1994 | 15.45 terawatt-hours | -6.9% |
| 1995 | 16.03 terawatt-hours | +3.7% |
| 1996 | 14.79 terawatt-hours | -7.7% |
| 1997 | 16.4 terawatt-hours | +10.9% |
| 1998 | 16.61 terawatt-hours | +1.3% |
| 1999 | 15.19 terawatt-hours | -8.5% |
| 2000 | 15.79 terawatt-hours | +3.9% |
| 2001 | 16.74 terawatt-hours | +6.0% |
| 2002 | 18.23 terawatt-hours | +8.9% |
| 2003 | 17.3 terawatt-hours | -5.1% |
| 2004 | 17.59 terawatt-hours | +1.7% |
| 2005 | 17.65 terawatt-hours | +0.3% |
| 2006 | 18 terawatt-hours | +2.0% |
| 2007 | 18.3 terawatt-hours | +1.7% |
| 2008 | 17.63 terawatt-hours | -3.7% |
| 2009 | 16.37 terawatt-hours | -7.2% |
| 2010 | 16.7 terawatt-hours | +2.0% |
| 2011 | 16.93 terawatt-hours | +1.4% |
| 2012 | 16.07 terawatt-hours | -5.1% |
| 2013 | 15.52 terawatt-hours | -3.4% |
| 2014 | 12.25 terawatt-hours | -21.1% |
| 2015 | 12.38 terawatt-hours | +1.1% |
| 2016 | 13.24 terawatt-hours | +6.9% |
| 2017 | 13.19 terawatt-hours | -0.3% |
| 2018 | 12.9 terawatt-hours | -2.2% |
| 2019 | 12.19 terawatt-hours | -5.5% |
| 2020 | 11.74 terawatt-hours | -3.7% |
| 2021 | 10.79 terawatt-hours | -8.1% |
| 2022 | 8.72 terawatt-hours | -19.2% |
| 2023 | 8.33 terawatt-hours | -4.5% |
| 2024 | 9.04 terawatt-hours | +8.6% |
| 2025 | 5.48 terawatt-hours | -39.4% |
Slovenia compared with similar countries
- Slovenia's 5.48 terawatt-hours is below the median for high income countries, which is 20.03 terawatt-hours, 27% of the median. (47 countries reporting)
- Slovenia's 5.48 terawatt-hours is below the median for Europe & Central Asia, which is 16.9 terawatt-hours, 32% of the median. (39 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 16.35 terawatt-hours | 14.79 terawatt-hours | 18.3 terawatt-hours | 10 |
| 2000s | 17.36 terawatt-hours | 15.79 terawatt-hours | 18.3 terawatt-hours | 10 |
| 2010s | 14.14 terawatt-hours | 12.19 terawatt-hours | 16.93 terawatt-hours | 10 |
| 2020s | 9.02 terawatt-hours | 5.48 terawatt-hours | 11.74 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 primary energy use by source in Slovenia?
- Primary energy use by source in Slovenia was 5.48 terawatt-hours in 2025, according to Energy Institute – Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data.
- What is the highest primary energy use by source recorded in Slovenia?
- The highest recorded value was 18.3 terawatt-hours in 1990.
- What is the lowest primary energy use by source recorded in Slovenia?
- The lowest recorded value was 5.48 terawatt-hours in 2025.
- How does Slovenia rank for primary energy use by source?
- Slovenia ranks 57th out of 79 countries with data for 2025.
- Is primary energy use by source rising or falling in Slovenia?
- Over the last ten years it is down 55.8%. The long-run trend across the full record is falling.
- Where does this Slovenia data come from?
- The figures come from Energy Institute – Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data, published as part of Primary energy use by source. 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
Measured in terawatt-hours of total energy supply.