Carbon dioxide emitted per kilowatt-hour of electricity generated — a measure of how clean the grid is (Ember via Our World in Data). Source: Our World in Data — Energy (Ember, Energy Institute). Retrieved 27 Jun 2026.
| Period | Electricity Carbon Intensity |
|---|---|
| 2023 | 556 gCO₂/kWh |
| 2022 | 556 gCO₂/kWh |
| 2021 | 636 gCO₂/kWh |
| 2020 | 636 gCO₂/kWh |
| 2019 | 636 gCO₂/kWh |
| 2018 | 700 gCO₂/kWh |
| 2017 | 700 gCO₂/kWh |
| 2016 | 636 gCO₂/kWh |
| 2015 | 600 gCO₂/kWh |
| 2014 | 625 gCO₂/kWh |
| 2013 | 571 gCO₂/kWh |
| 2012 | 625 gCO₂/kWh |
53 countries carry a recent carbon intensity of electricity figure. Each opens its own page with the history, the source and the API request.
140 of 207 indicators carry a figure for Sao Tome and Principe, grouped by topic.