Archive · 31 Jul 2026
Brazil's Hydropower Plants Brace for Heavy Rains Amid El Niño
Brazil uses a lot of water power to make electricity.
Scientists think a big weather pattern called El Niño will bring a lot of rain to the south of Brazil.
The water in the dams could get too high, so the companies that run the dams are testing their safety systems.
They also plan to help the people living near the dams.
If the rain is too heavy, it could flood the south and dry out the Amazon, which would make it hard to keep the lights on.
Brazil relies on hydroelectric dams for about two‑thirds of its electricity.
China Three Gorges and Engie are conducting spillway tests and safety protocols ahead of expected heavy rains.
July rainfall in southern Brazil reached 256% of the long‑term average, with reservoirs at 88% capacity.
The severe El Niño forecast could trigger flooding in the south and drought in the Amazon, threatening energy security.
Companies plan enhanced weather monitoring and preventive measures for downstream communities.
- Who
- Brazil's major hydroelectric operators (China Three Gorges, Engie) and authorities
- What
- Preparing for heavy rains due to a severe El Niño
- When
- July 2024 and upcoming months
- Where
- Southern Brazil
- Why
- To prevent flooding and maintain power supply amid climate change
- Electricity source
- Hydroelectric
- Projected rainfall increase
- 256% of long‑term average
- Reservoir capacity
- 88%
- El Niño forecast
- severe
- Companies involved
- China Three Gorges, Engie