Year-to-year change in primary energy from fossil fuels vs. in Slovenia

Slovenia: Year-to-year change in primary energy from fossil fuels vs. was -0.7674 terawatt-hours in 2025. ◆ Volatile

Latest (2025)
-0.7674 terawatt-hours
Change on year
down 167.7%
World rank
64th
of 80 countries
All-time high
4.55 terawatt-hours
in 2014
All-time low
-4.58 terawatt-hours
in 2015
Years of data
35
1991–2025

Year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Slovenia, 1991–2025

-4-20241991200820251991: 1.6 terawatt-hours1992: -3.2 terawatt-hours1993: -0.433 terawatt-hours1994: 2.3 terawatt-hours1995: 0.368 terawatt-hours1996: -0.242 terawatt-hours1997: 0.808 terawatt-hours1998: 0.359 terawatt-hours1999: -0.596 terawatt-hours2000: 0.41 terawatt-hours2001: 1.5 terawatt-hours2002: 0.429 terawatt-hours2003: -1.3 terawatt-hours2004: 1.9 terawatt-hours2005: 0.621 terawatt-hours2006: -0.87 terawatt-hours2007: 0.246 terawatt-hours2008: 3.2 terawatt-hours2009: -1.2 terawatt-hours2010: -0.183 terawatt-hours2011: 0.776 terawatt-hours2012: -1.4 terawatt-hours2013: 0.167 terawatt-hours2014: 4.5 terawatt-hours2015: -4.6 terawatt-hours2016: 0.814 terawatt-hours2017: 1.2 terawatt-hours2018: -0.239 terawatt-hours2019: 0.167 terawatt-hours2020: 2.2 terawatt-hours2021: -2 terawatt-hours2022: -2 terawatt-hours2023: 2.5 terawatt-hours2024: 1.1 terawatt-hours2025: -0.767 terawatt-hours

Source: Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data. Measured in terawatt-hours.

Analysis

The most recent figure for year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Slovenia is -0.7674 terawatt-hours, measured in 2025.

Compared with earlier readings it is down 167.7% on the previous year and up 83.3% over ten years.

Over the whole period, year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Slovenia peaked at 4.55 terawatt-hours in 2014 and was at its lowest, -4.58 terawatt-hours, in 2015.

Slovenia ranks 64th of 80 countries on this measure, in the bottom quarter.

The series is highly variable year to year, so single readings are best treated with caution.

Year-to-year change in primary energy from fossil fuels vs. in Slovenia, year by year

Annual values for Year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Slovenia, 1991 to 2025.
Year terawatt-hours Change
1991 1.63 terawatt-hours —
1992 -3.16 terawatt-hours -293.3%
1993 -0.4335 terawatt-hours -86.3%
1994 2.34 terawatt-hours -640.5%
1995 0.3681 terawatt-hours -84.3%
1996 -0.2416 terawatt-hours -165.6%
1997 0.8078 terawatt-hours -434.4%
1998 0.359 terawatt-hours -55.6%
1999 -0.5958 terawatt-hours -266.0%
2000 0.4102 terawatt-hours -168.8%
2001 1.47 terawatt-hours +258.7%
2002 0.4291 terawatt-hours -70.8%
2003 -1.27 terawatt-hours -395.5%
2004 1.9 terawatt-hours -249.7%
2005 0.6205 terawatt-hours -67.3%
2006 -0.8701 terawatt-hours -240.2%
2007 0.2458 terawatt-hours -128.3%
2008 3.2 terawatt-hours +1200.2%
2009 -1.15 terawatt-hours -136.0%
2010 -0.1826 terawatt-hours -84.1%
2011 0.7762 terawatt-hours -525.1%
2012 -1.42 terawatt-hours -283.3%
2013 0.1666 terawatt-hours -111.7%
2014 4.55 terawatt-hours +2629.1%
2015 -4.58 terawatt-hours -200.8%
2016 0.8144 terawatt-hours -117.8%
2017 1.22 terawatt-hours +49.3%
2018 -0.239 terawatt-hours -119.7%
2019 0.1665 terawatt-hours -169.7%
2020 2.18 terawatt-hours +1207.0%
2021 -1.98 terawatt-hours -190.8%
2022 -1.98 terawatt-hours +0.1%
2023 2.47 terawatt-hours -224.6%
2024 1.13 terawatt-hours -54.0%
2025 -0.7674 terawatt-hours -167.7%

Slovenia compared with similar countries

  • Slovenia's -0.7674 terawatt-hours is below the median for high income countries, which is 0.5633 terawatt-hours. (47 countries reporting)
  • Slovenia's -0.7674 terawatt-hours is below the median for Europe & Central Asia, which is 0.1847 terawatt-hours. (39 countries reporting)

Biggest year-on-year movements

Years where Year-to-year change in primary energy from fossil fuels vs. in Slovenia changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.

YearChange FromTo
2014 +2629.1% 0.1666 terawatt-hours 4.55 terawatt-hours

Averages by decade

DecadeAverage LowestHighest Years
1990s 0.1204 terawatt-hours -3.16 terawatt-hours 2.34 terawatt-hours 9
2000s 0.4983 terawatt-hours -1.27 terawatt-hours 3.2 terawatt-hours 10
2010s 0.1258 terawatt-hours -4.58 terawatt-hours 4.55 terawatt-hours 10
2020s 0.1755 terawatt-hours -1.98 terawatt-hours 2.47 terawatt-hours 6

Countries ranked near Slovenia

  1. 61 Luxembourg -0.3889 terawatt-hours compare
  2. 62 Portugal -0.5683 terawatt-hours compare
  3. 63 Romania -0.6788 terawatt-hours compare
  4. 65 Iraq -0.8278 terawatt-hours compare
  5. 66 Russia -1.54 terawatt-hours compare
  6. 67 Mexico -1.54 terawatt-hours compare

See the full ranking of 82 places →

More climate change data for Slovenia

All data for Slovenia →

Frequently asked questions

What is year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Slovenia?
Year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Slovenia was -0.7674 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 year-to-year change in primary energy from fossil fuels vs. low-carbon energy recorded in Slovenia?
The highest recorded value was 4.55 terawatt-hours in 2014.
What is the lowest year-to-year change in primary energy from fossil fuels vs. low-carbon energy recorded in Slovenia?
The lowest recorded value was -4.58 terawatt-hours in 2015.
How does Slovenia rank for year-to-year change in primary energy from fossil fuels vs. low-carbon energy?
Slovenia ranks 64th out of 80 countries with data for 2025.
Is year-to-year change in primary energy from fossil fuels vs. low-carbon energy rising or falling in Slovenia?
Over the last ten years it is up 83.3%. The long-run trend across the full record is volatile.
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 Year-to-year change in primary energy from fossil fuels vs. low-carbon energy. Statizoid updates them automatically from the source API.

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Year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Slovenia. Statizoid, drawing on Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data. Retrieved 13 October 2026, from https://climate.statizoid.com/stat/annual-primary-energy-fossil-vs-low-carbon/slovenia/

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About this data

Indicator
Year-to-year change in primary energy from fossil fuels vs. low-carbon energy
Unit
terawatt-hours
Source
Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
82 places, 4,598 data points, 1966–2025
Last refreshed

Change in total energy supply relative to the previous year, measured in terawatt-hours.