Energy intensity level of primary energy is the ratio between energy supply and gross domestic product measured at purchasing power parity at constant prices of 2011. Energy intensity is an indication of how much energy is used to produce one unit of economic output. Lower ratio indicates that less energy is used to produce one unit of output.
| 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| エクアドル | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
| ベネズエラ（ボリバル共和国） | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 8 | 8 | |
| アルジェリア | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | |
| イラン | 7 | 8 | 8 | 7 | 8 | 8 | 9 | 9 | 8 | 9 | 9 | 10 | 10 | 9 | |
| イラク | 13 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | |
| クウェート | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 7 | 8 | |
| リビア | 5 | 4 | 4 | 7 | 4 | 5 | 8 | 8 | 8 | 7 | 6 | 7 | 4 | 5 | |
| カタール | 9 | 9 | 6 | 6 | 7 | 7 | 7 | 7 | 6 | 7 | 7 | 7 | 7 | 7 | |
| サウジアラビア | 5 | 5 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | |
| アラブ首長国連邦 | 4 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | |
| アンゴラ | 4 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | |
| コンゴ | 2 | 3 | 3 | 4 | 4 | 5 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | |
| 赤道ギニア | 1 | 3 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 6 |
| ガボン | 3 | 6 | 9 | 7 | 6 | 8 | 7 | 7 | 7 | 7 | 7 | 6 | 7 | 6 | |
| ナイジェリア | 11 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 |