en.Wedoany.com Reported - A pilot project in the city of São Bernardo do Campo, São Paulo state, Brazil, has confirmed that installing photovoltaic panels within the safety zone beneath transmission lines is technically feasible and does not affect grid operation. The project, executed by ISA Energia Brasil with a total investment of 1.6 million reais, is part of a Research, Development and Innovation (PD&I) program regulated by the Brazilian National Electric Energy Agency (ANEEL).
The testing covered shading analysis, electromagnetic field impacts, and the operational compatibility between transmission facilities and solar power generation. The study showed that the photovoltaic system's performance experienced very low levels of interference, and grid safety was not significantly affected. The R&D work was conducted from May to December 2025, involving the installation of a solar plant prototype under a transmission line, and evaluated practical factors such as shading behavior caused by towers and cables, PV module performance, and electromagnetic interference.
Computer simulations indicated that the plant could reach an installed capacity of 1.224 megawatt-peak (MWp), with an annual generation of approximately 1,746 megawatt-hours (MWh), enough to supply hundreds of households. One of the main conclusions of the study was that shading from the transmission structures did not cause significant losses in power generation. The high-efficiency panels used in the system can utilize reflected radiation from the surroundings, maintaining high performance even when direct light is reduced.
The technical validation went through three stages: theoretical analysis, computer simulation, and field measurement, consolidating the technical parameters for future expansion of this model. ISA Energia Brasil believes the newly acquired data helps reduce uncertainties regarding the use of transmission line safety zones for renewable energy generation.
The company operates approximately 23,000 kilometers of transmission lines in Brazil, covering 18 states and major cities. In the city of São Paulo alone, the relevant safety zone area amounts to 16.2 million square meters. The company assesses that these areas can serve as a complementary use for existing infrastructure, promoting the integration of power transmission and renewable energy generation. The project also strengthens discussions on land-use efficiency and decarbonization solutions for Brazil's electricity sector.
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