Solar panel farm in dry Brazilian landscape

Solar photovoltaic farm in the Brazilian hinterland harnesses high irradiation to generate renewable energy in a semi-arid landscape.

About this subject

The installation of solar farms in the Brazilian hinterland (sertão) combines abundant natural resources with the need for energy diversification. The sertão, characterized by its semi-arid climate and high annual solar irradiation, receives levels that can exceed 2,000 kWh/m² per year, surpassing many European regions. This makes the area ideal for large-scale photovoltaic generation.

Major solar projects have been deployed in states such as Bahia, Pernambuco, Piauí, and Ceará, often on land previously used for extensive cattle ranching or rainfed agriculture. The generated power is fed into the National Interconnected System (SIN), contributing to Brazil's electricity mix, which is already one of the most renewable in the world. In 2023, solar power accounted for about 15% of the country's installed capacity, with rapid growth.

The typical sertão landscape, with low Caatinga vegetation and dry soil, offers logistical advantages for solar panel installation, such as low land costs and minimal deforestation requirements. However, challenges like dust accumulation on panels and the need for efficient cooling systems demand specific technical solutions. Companies have invested in automated cleaning robots and modules with higher tolerance to high temperatures.

Beyond energy, these enterprises generate local jobs and income for inland municipalities, which often face low economic dynamism. Solar power in the sertão is also seen as a way to reduce dependence on hydroelectric plants during prolonged droughts, enhancing Brazil's energy security.

Frequently Asked Questions

Why is the Brazilian sertão ideal for solar farms?

The sertão has high annual solar irradiation, low land costs, and sparse vegetation, facilitating panel installation. The region receives over 2,000 kWh/m² per year, surpassing many areas worldwide.

Which Brazilian states concentrate the largest solar farms?

Bahia, Pernambuco, Piauí, and Ceará are the main states, with projects totaling hundreds of megawatts of installed capacity.

How does dust in the sertão affect solar panels?

Dust accumulation reduces panel efficiency. To mitigate this, automated cleaning robots and modules with anti-adhesive coatings are used.