Brazil's Renewable Energy Milestone and Challenges Ahead

In August 2025, Brazil achieved a significant milestone in its energy sector, with solar and wind energy generating over 34% of the country's total electricity for the first time. This achievement, reported by the experts' group Ember, marked a record monthly production of 19 terawatt-hours (TWh), sufficient to power approximately 119 million Brazilian households. This surpassed the previous record of 18.6 TWh set in September 2024. The rise of renewables comes as hydroelectric production, traditionally dominant in Brazil, fell to its lowest level in four years, contributing only 48% to the electricity grid.

Brazil: Solar and wind energy surpass one-third of the national electricity grid for the first time

The growth of solar and wind energy in Brazil has been notable. In 2024, these sources accounted for 24% of national electricity, a significant increase from just 1% for solar and 8.8% for wind in 2019. This transition has contributed to a 31% reduction in emissions from the electricity sector since 2014, despite a 22% increase in demand. Ricardo Baitelo from the Institute of Energy and Environment emphasized that these renewable sources are now integral to the electric grid.

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Despite the progress, Brazil's renewable energy sector faces significant challenges, particularly regarding curtailment. In August 2025, 20% of potential solar output was curtailed, up from 12% in August 2024. Rodrigo Sauaia, president of the Brazilian Photovoltaic Solar Energy Association (Absolar), noted that the financial impact of these curtailments is substantial, with sector losses estimated at BRL 1.7 billion ($315.4 million). The National System Operator (ONS) acknowledged only BRL 1.1 billion of these losses, indicating that many impacts remain unaccounted for.

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The curtailment issues are exacerbated by inadequate infrastructure. Approximately 25% to 30% of outages are attributed to a lack of transmission lines, while another 25% is due to grid robustness. Renata Carvalho from the Energy Research Company (EPE) highlighted plans for significant investments in transmission lines and synchronous compensators, with BRL 56 billion earmarked for projects between 2028 and 2030. However, the rising demand for energy and the need for improved infrastructure remain pressing concerns.

Brazil solar curtailment hits 20% as renewables puts a strain grid infrastructure

Baitelo pointed out Brazil's unique position as the only G20 country on track to triple its renewable energy use within five years, as agreed at COP28 in Dubai. However, he cautioned that urgent measures are necessary to maintain this leadership. Paulo Pedrosa, president of Abrace Energia, criticized the current model for favoring expensive thermal energy and called for structural reforms to leverage Brazil's clean energy potential.

Brazil: Solar and wind energy surpass one-third of the national electricity grid for the first time

Critics have raised concerns about the distortions caused by subsidies for residential solar energy, which have led to increased costs and reliance on costly thermal energy. The need for a comprehensive approach to address these challenges is evident, as stakeholders call for better integration of renewable sources into the energy grid.

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As Brazil prepares to host COP30 in Belém from November 10th to 21st, 2025, the conference will focus on emission reductions and the transition to renewable energies. This event presents an opportunity for Brazil to showcase its advancements in renewable energy while addressing the challenges that accompany this transition. The outcomes of COP30 could significantly influence Brazil's future energy policies and its role in global climate initiatives.

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