Solar power has become an increasingly significant contributor to Portugal’s electricity mix, accounting for around 14.5% of total electricity generation in 2024 with 5.81 GW of installed capacity, and record annual additions of approximately 1.7 GW that same year. Behind that growth sits a market led by a single internationally active EPC contractor alongside a group of established regional specialists serving residential and commercial clients. This article presents a curated Top 5 of PV Installers in Portugal, selected for installed capacity and significance within the Portuguese solar market.

The full research dataset, including verified contact information, LinkedIn profiles, certification status, and installed capacity figures for all 50+ companies, is available exclusively through the Renewables.Digital Research Platform.

Top 5 – Curated Selection

Sorted by installed capacity. Management names and precise revenue figures are intentionally excluded from this overview.

Industry Overview: Solar PV Installation in Portugal

Portugal’s PV installer market is led by one clear outlier in scale, an internationally active EPC contractor with a project portfolio spanning multiple continents, followed by a group of established regional specialists serving the domestic residential and commercial markets. The companies in this curated selection reflect that structure.

Internationally Active EPC Contractor

Rosseti, headquartered in Braga, stands well apart from the rest of the market with an installed capacity built across wind, solar, and hydro projects in Portugal, Brazil, Germany, Belgium, and beyond. The company has delivered projects ranging from smaller rooftop self-consumption installations to large ground-mounted solar farms, and has participated in construction of what was, at the time, considered Europe’s largest photovoltaic project.

Established Regional Specialists

Sinersol, based in Rio Tinto, and SunEnergy, headquartered in Coimbra with over a decade of experience in the renewable energy sector, have each built up around 50 MW of installed capacity serving residential and commercial clients. RESUL Equipamentos de Energia, based in Bobadela, is the longest-established name on this list, tracing its roots back to 1982, while SOLvasto, headquartered in Cascais, rounds out the selection with 25 MW of installed capacity.

Market Outlook

With Portugal targeting between 8.1 and 9.9 GW of installed solar capacity by 2030, up from 5.81 GW in 2024, continued growth in both residential and utility-scale segments is expected. Competition between internationally active EPC contractors chasing large ground-mounted projects and regional specialists defending established residential and commercial client relationships is a trend worth watching as the market matures.

This list is an excerpt from our larger database of PV installers across Europe.