Slovakia vs Tonga: Carbon intensity of energy
Slovakia
163.26 grams of CO₂ per kilowatt-hour
in 2024
Tonga
165.46 grams of CO₂ per kilowatt-hour
in 2024
Slovakia rank
166th
Tonga rank
163rd
Carbon intensity of energy over time
- Slovakia
- Tonga
How they compare
Tonga currently reports 165.46 grams of CO₂ per kilowatt-hour against 163.26 grams of CO₂ per kilowatt-hour in Slovakia, a difference of 2.2 grams of CO₂ per kilowatt-hour.
The two have swapped places 8 times across 45 shared years of data; in 1980 it was Tonga ahead.
Slovakia ranks 166th and Tonga ranks 163rd of 204 countries.
Across the 5 decades both report, Slovakia averaged higher in 2 and Tonga in 3.
Head to head by decade
| Decade | Slovakia | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 255.92 grams of CO₂ per kilowatt-hour | 262.36 grams of CO₂ per kilowatt-hour | 6.44 grams of CO₂ per kilowatt-hour | Tonga |
| 1990s | 226.96 grams of CO₂ per kilowatt-hour | 189.34 grams of CO₂ per kilowatt-hour | 37.62 grams of CO₂ per kilowatt-hour | Slovakia |
| 2000s | 196.28 grams of CO₂ per kilowatt-hour | 220.25 grams of CO₂ per kilowatt-hour | 23.97 grams of CO₂ per kilowatt-hour | Tonga |
| 2010s | 188.99 grams of CO₂ per kilowatt-hour | 157.29 grams of CO₂ per kilowatt-hour | 31.7 grams of CO₂ per kilowatt-hour | Slovakia |
| 2020s | 171.43 grams of CO₂ per kilowatt-hour | 176.06 grams of CO₂ per kilowatt-hour | 4.64 grams of CO₂ per kilowatt-hour | Tonga |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher carbon intensity of energy, Slovakia or Tonga?
- Tonga, at 165.46 grams of CO₂ per kilowatt-hour against 163.26 grams of CO₂ per kilowatt-hour in Slovakia as of 2024.
- What is the difference in carbon intensity of energy between Slovakia and Tonga?
- 2.2 grams of CO₂ per kilowatt-hour, with Tonga ahead.
- How many years of comparable data are there for Slovakia and Tonga?
- 45 years are reported by both, from 1980 to 2024.
- How do Slovakia and Tonga rank globally for carbon intensity of energy?
- Slovakia ranks 166th and Tonga ranks 163rd 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.