Where does CO₂ come from?
75% of global emissions come from energy. Not deforestation.
- Carvão35.5%
- Gás22.5%
- Hidro14.3%
- Eólica7.8%
- Nuclear9.1%
- Solar5.5%
- Outros5.3%
Fontes de baixo carbono (hidro + nuclear + eólica + solar) somam ~39%. Fonte: Ember Energy Review 2024.
75% of all greenhouse gas emissions in the world come from energy generation. Not from deforestation. Not from agriculture. From energy.
Source: Our World in Data / Ritchie, H., 2020.
The global energy mix is still dominated by fossil fuels:
- Oil: 30.2%
- Coal: 27.6%
- Natural gas: 23.1%
Source: BEN / EPE — National Energy Balance, 2024.
These three fuels generate around 21.3 billion tonnes of CO₂ per year — the leading cause of global warming.
Renewable energies have minimal environmental impact, but one critical limitation: they depend on nature. There is no sun at night. There is no wind every day. Without industrial-scale storage, they cannot be the sole backbone of the energy mix.
This is where nuclear energy comes in: clean, continuous, and weather-independent.
Which sector accounts for 75% of global greenhouse gas emissions?
Nuclear fusion is the answer science is building right now.