Portuguese motorways could become major producers of solar energy 19/01/2026

A study conducted in partnership with the Adene Energy Observatory reveals that Portuguese motorways have high potential for solar electricity production, taking advantage of existing and currently underutilized spaces. The study analyzes the technical and economic feasibility of installing photovoltaic systems along the concessioned motorway network in mainland Portugal.

With a length of over 3,300 kilometers, the national motorway network crosses the entire territory and includes areas such as embankments, access junctions, noise barriers, toll gates, and areas adjacent to service areas. According to the study, these infrastructures offer favorable conditions for the installation of solar panels, without competing with other land uses, such as agriculture or housing.

The results show that renewable electricity production on highways can reach a significant scale, with technically feasible and, in many cases, economically viable projects. The analysis indicates that, depending on the location and business model adopted—such as self-consumption, energy communities, or long-term electricity sales contracts—investments may have payback periods compatible with the duration of highway concessions. 

Among the main conclusions, the study highlights that the use of highways for solar production can contribute significantly to the energy transition, reduce operating costs for concessionaires, and support national decarbonization goals. The authors also emphasize the importance of public policies that encourage this type of use, simplifying licensing processes and promoting integration between the infrastructure and energy sectors.

You can consult the study here.