Japan vs Sierra Leone: Carbon intensity of energy
Japan
208.5 grams of CO₂ per kilowatt-hour
in 2024
Sierra Leone
205.91 grams of CO₂ per kilowatt-hour
in 2024
Japan rank
105th
Sierra Leone rank
108th
Carbon intensity of energy over time
- Japan
- Sierra Leone
How they compare
Japan currently reports 208.5 grams of CO₂ per kilowatt-hour against 205.91 grams of CO₂ per kilowatt-hour in Sierra Leone, a difference of 2.59 grams of CO₂ per kilowatt-hour.
The two have swapped places 10 times across 45 shared years of data; in 1980 it was Japan ahead.
Japan ranks 105th and Sierra Leone ranks 108th of 204 countries.
Across the 5 decades both report, Japan averaged higher in 3 and Sierra Leone in 2.
Head to head by decade
| Decade | Japan | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 214.93 grams of CO₂ per kilowatt-hour | 169.23 grams of CO₂ per kilowatt-hour | 45.7 grams of CO₂ per kilowatt-hour | Japan |
| 1990s | 212.68 grams of CO₂ per kilowatt-hour | 78.56 grams of CO₂ per kilowatt-hour | 134.12 grams of CO₂ per kilowatt-hour | Japan |
| 2000s | 205.27 grams of CO₂ per kilowatt-hour | 198.92 grams of CO₂ per kilowatt-hour | 6.35 grams of CO₂ per kilowatt-hour | Japan |
| 2010s | 227.8 grams of CO₂ per kilowatt-hour | 231.25 grams of CO₂ per kilowatt-hour | 3.45 grams of CO₂ per kilowatt-hour | Sierra Leone |
| 2020s | 215.35 grams of CO₂ per kilowatt-hour | 218.66 grams of CO₂ per kilowatt-hour | 3.31 grams of CO₂ per kilowatt-hour | Sierra Leone |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher carbon intensity of energy, Japan or Sierra Leone?
- Japan, at 208.5 grams of CO₂ per kilowatt-hour against 205.91 grams of CO₂ per kilowatt-hour in Sierra Leone as of 2024.
- What is the difference in carbon intensity of energy between Japan and Sierra Leone?
- 2.59 grams of CO₂ per kilowatt-hour, with Japan ahead.
- How many years of comparable data are there for Japan and Sierra Leone?
- 45 years are reported by both, from 1980 to 2024.
- How do Japan and Sierra Leone rank globally for carbon intensity of energy?
- Japan ranks 105th and Sierra Leone ranks 108th of 204 countries.
- Where does this data come from?
- Global Carbon Budget (2025) and other sources – with major processing by Our World in Data, published as Carbon intensity of energy. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Fossil carbon dioxide (CO₂) emissions per unit of total energy supply, measured in grams of CO₂ per kilowatt-hour.