Iceland vs Slovenia: Primary energy use by source

Iceland
0.0104 terawatt-hours
in 2025
Slovenia
0.0068 terawatt-hours
in 2025
Iceland rank
70th
Slovenia rank
71st

Primary energy use by source over time

  • Iceland
  • Slovenia
00.0050.010.015196519952025

How they compare

Iceland currently reports 0.0104 terawatt-hours against 0.0068 terawatt-hours in Slovenia, a difference of 0.0036 terawatt-hours.

That makes Iceland's figure about 1.5 times Slovenia's.

The two have swapped places 5 times across 36 shared years of data; in 1990 it was Slovenia ahead.

Iceland ranks 70th and Slovenia ranks 71st of 79 countries.

Individual pages

About this data

Indicator
Primary energy use by source
Unit
terawatt-hours
Source
Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
82 places, 4,686 data points, 1965–2025
Last refreshed

Measured in terawatt-hours of total energy supply.