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The solar revolution in Brazil: 39.6% growth in 2024
The Brazilian electricity sector is experiencing a historic moment. According to the National Energy Balance (BEN) 2025, solar photovoltaic generation grew by 39.6% in 2024, reaching 70.7 TWh — a jump of more than 20 TWh compared to the previous year. This performance consolidated solar power as one of the main forces in the country's energy transition, alongside wind power, and reinforces Brazil's leading role in the use of renewables.
Micro and mini distributed generation (MMGD)
Micro and mini-distributed generation was one of the drivers of this growth. In 2024, MMGD registered a 36.6% increase compared to 2023, reaching 42,268 GWh. Of this, 97% came from solar energy, which remains the main source in the segment. This represents 5.6% of all national electricity generation, demonstrating how small systems on rooftops, in industries, and in businesses are transforming access to energy in Brazil.
Geographic distribution
The expansion of solar energy in the country has been concentrated especially in the Center-South region, with states such as Minas Gerais, São Paulo, Santa Catarina, Rio Grande do Sul, and Mato Grosso leading in installed capacity. The total capacity of distributed generation solar energy reached 35,892 MW, showing that adoption is spreading across different consumer profiles, from residential to industrial.
Growth factors
Several factors explain this accelerated evolution:
The drop in the cost of photovoltaic modules is making the technology increasingly accessible.
Public policies and regulatory frameworks, such as Law 14.300/2022, ensure predictability for investors and consumers.
The search for energy independence, especially in the face of tariff fluctuations and water crises.
Attracting private investment, driven by the sector's potential return.
Impacts on the consumer
For consumers, the solar revolution brings direct benefits. In addition to reduced energy bills, there is greater predictability in costs and the possibility of active participation in the electricity grid, since many consumers also become prosumers (producing and consuming their own energy).
Challenges and opportunities
Despite the progress, the sector still faces significant challenges:
Transmission and distribution infrastructure:
This is currently one of the most critical points for sustaining the advancement of solar energy in Brazil. Despite the accelerated expansion of installed capacity, the national electricity grid still faces significant bottlenecks, especially in regions that concentrate large-scale projects.
Saturated transmission lines or lines located far from generation centers can limit the full utilization of the energy produced. Modernizing and expanding this infrastructure is essential to ensure that solar energy reaches end consumers in a stable and safe manner, avoiding losses and waste along the way.
Regulation of the distributed energy market:
The significant growth of micro and mini-generation has brought benefits to consumers, but also challenges for distributors, who need to maintain the economic sustainability of the system. In this scenario, the regulatory framework must balance the interests of both sides: guaranteeing incentives for distributed generation, which democratizes access to clean energy, while preserving the financial viability of the concessionaires responsible for operating the network. The regulatory debate is, therefore, a central axis for consolidating the model for the expansion of solar energy in the country.
Energy storage:
Finally, energy storage represents both a challenge and a great opportunity. Currently, batteries still have high costs, which hinders their widespread adoption in Brazil. However, this technology is crucial for providing greater reliability to the electrical system, since solar generation depends on climatic factors and presents natural intermittencies.
With more affordable and efficient storage solutions, it will be possible to store surplus energy produced during the day and use it during periods of lower generation, increasing grid stability and maximizing the use of solar energy.
Falling battery prices and advances in new technologies, such as green hydrogen, could transform this scenario in the coming years.
At the same time, strategic opportunities are emerging for Brazil to consolidate its leadership in renewables: attracting new investments, integrating with other clean energy sources, and stimulating technological innovation.
The 39.6% growth in solar power generation in 2024 is not just a significant number, but a sign that Brazil is facing an energy revolution. The expansion of solar energy strengthens energy security, reduces emissions, and increases the country's competitiveness on the global stage. The challenge now is to transform this progress into a sustainable long-term model, capable of benefiting all of society and ensuring an increasingly clean and efficient future.
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