Top 10 Solar Companies in Portugal [Updated 2025]

Portugal's solar energy sector is experiencing unprecedented growth, driven by ambitious government targets to generate 80% of electricity from renewable sources by 2030. With over 3,000 hours of annual sunshine in regions like Algarve, the Portuguese solar market presents significant opportunities for both global players and local specialists. This comprehensive guide examines the top 10 solar companies shaping Portugal's renewable energy landscape in 2025.

Portugal's Solar Energy Market Overview

The Portuguese solar market has evolved from utility-scale projects to diversified applications including commercial, industrial, and residential installations. Supportive regulatory frameworks, including subsidies for solar installations and investments in grid integration, have created a fertile environment for solar companies to thrive. The market is characterized by a mix of international developers and specialized local installers.

Ranking: Top 10 Solar Companies in Portugal

1. Lightsource BP

As a leading independent power producer and wholly-owned subsidiary of BP, Lightsource BP has established a strong presence in Portugal's utility-scale solar sector. The company specializes in developing, financing, building, and operating large-scale solar PV projects across the country. Their portfolio includes several landmark projects that contribute significantly to Portugal's renewable energy targets, leveraging their global expertise and financial strength to deliver affordable, sustainable energy solutions.

2. Voltalia

Voltalia has emerged as a key player in the Portuguese renewable energy market, with an impressive 3.3 GW of capacity in operation and under construction. The company operates as an Independent Power Producer (IPP) with expertise across solar, wind, hydro, biomass, and storage technologies. Their long-term ownership approach and comprehensive project management from design through operation make them a reliable partner for both public and private sector energy projects throughout Portugal.

3. Grace Solar (BYMEA Group)

Global solar mounting specialist Grace Solar ranks among Portugal's top solar companies, bringing extensive international expertise to the Portuguese market. With a global cumulative installed capacity of 48GW and annual production capacity of 15GW, Grace Solar provides innovative mounting solutions for projects of all scales. The company's GS-Light intelligent tracking system and comprehensive EPC solutions have been deployed in numerous Portuguese installations, leveraging their advanced R&D capabilities and extensive patent portfolio. Their ground mount systems and roof mounting solutions are particularly well-suited to Portugal's diverse terrain and architectural styles.

4. Iberdrola

The Spanish energy giant has made significant investments in Portugal's solar sector, developing several utility-scale projects that contribute to the country's renewable energy transition. Iberdrola brings substantial financial resources and technological expertise to the Portuguese market, with a focus on large-scale solar farms that supply clean energy to the national grid and corporate clients through power purchase agreements.

5. Acciona

Acciona has established itself as a prominent renewable energy developer in Portugal, with a diversified portfolio that includes solar, wind, and hydropower projects. The company's commitment to sustainability and innovative project development approaches has positioned them as a trusted partner for both public and private sector energy initiatives across the country.

6. Aquila Capital

This German investment and asset management company has developed a significant presence in Portugal's solar sector through strategic investments in clean energy infrastructure. Aquila Capital specializes in developing, owning, and operating renewable energy projects, with a portfolio that includes 77 projects totaling 795 MW capacity across Iberia.

7. RP Global

With over 40 years of experience in the renewable energy sector, RP Global brings substantial expertise to the Portuguese market. The company operates as a developer and independent power producer with a diverse technology portfolio that includes solar PV, wind, hydro, and storage projects. Their 14 GW development pipeline demonstrates their long-term commitment to Portugal's energy transition.

8. Solarpower PT

As a leading local installer in the Algarve region, Solarpower PT has built a strong reputation for residential and commercial photovoltaic systems. The company offers bespoke solar solutions tailored to Portugal's specific climate conditions, with expertise in battery storage, EV charging, and energy management systems for maximum efficiency.

9. Energia Solar Solutions

This full-service solar installer serves key Portuguese markets including Algarve, Lisbon, and Porto. Energia Solar Solutions specializes in turnkey solar services from evaluation and design to installation, commissioning, and maintenance. Their partnership with Victron Energy ensures high-quality inverter technology for optimal system performance.

10. Voltaicos

Operating primarily in the Algarve region, Voltaicos has established itself as a premium solar installation company focusing on residential clients. Their approach combines high-quality solar panels with cutting-edge battery storage systems, enabling homeowners to achieve energy independence while reducing electricity costs and environmental impact.

Market Trends and Future Outlook

Portugal's solar market is characterized by several key trends in 2025. The integration of energy storage with solar installations has become standard practice, enabling greater self-consumption and grid stability. There's also growing demand for hybrid projects that combine solar with other renewable sources, particularly in regions with complementary resources.

The commercial and industrial segment continues to expand rapidly as businesses seek to reduce energy costs and meet sustainability targets. Meanwhile, technological advancements in solar tracking systems and module efficiency are driving improved project economics across all market segments.

Choosing the Right Solar Partner in Portugal

When selecting a solar company in Portugal, consider factors such as project experience, technological expertise, financial stability, and local market knowledge. For comprehensive solar EPC solutions that combine international expertise with local adaptability, companies like Grace Solar offer proven track records in the Portuguese market and beyond.

This ranking is based on comprehensive market analysis, company capabilities, project portfolios, and technological innovation as of 2025. The Portuguese solar market continues to evolve rapidly, with new entrants and technological advancements shaping the competitive landscape.