September 18th, 2025
The Energy Research Office (EPE) has released in English its first fact sheet in a series dedicated to analyzing the effects of climate change on the Brazilian power sector. Called "Transmission and Climate Change", the document highlights the main climate-related risks threatening the transmission grid and points to pathways for strengthening the system's resilience.
With nearly 190,000 km of lines supplying over 99% of Brazil's electricity, the grid is essential to ensuring the security, stability, and quality of the national power system. Since it is mostly composed of overhead structures, the transmission grid faces increasing risks due to the intensification of extreme weather events. Between 2014 and 2023, climate-linked events caused 43% of outages. In 2024, floods in Rio Grande do Sul disrupted over 40 lines and flooded more than 10 substations.
Considering IPCC (Intergovernmental Panel on Climate Change) projections of more frequent and intense extreme events, the fact sheet emphasizes the importance of integrating climate resilience into transmission planning. It also details the role of transmission in the country, the main risks associated with climate change, studies already conducted by EPE, and recommends measures for adaptation and system strengthening.
Click here and read the Fact Sheet "Transmission and Climate Change"
