London, UK – 04 November 2025 – RES, the world’s largest independent renewable energy company and service provider, has been ranked second in Wood Mackenzie’s Solar PV Operations & Maintenance (O&M) Technology Outlook 2025. Wood Mackenzie is a leading global energy research and consultancy firm, widely recognised for its in-depth market analysis and industry benchmarking.
While RES ranks second overall, it stands out as the independent service provider (ISP) with the greatest global footprint and consistent service across all top-tier regions.
With 21.9 GW of solar capacity under management - representing a 39% increase year-on-year - RES continues to play a key role in supporting the performance and longevity of solar assets worldwide.
According to the report, RES is the largest provider in the EMEA region with 13 GW of capacity under management and has significantly expanded its footprint in the Americas.
In the United States, RES has doubled its maintained solar capacity over the past year to reach 3 GW, supported by major contracts, including one with Spanish energy company Repsol. In Chile, RES now manages 2.3 GW, making it the country’s leading independent service provider.
Juan Gutierrez, CEO of RES Services, said: “This recognition from Wood Mackenzie reflects the trust our clients place in us and the dedication of our teams across the globe. Our ability to deliver consistent technical excellence regardless of region is a key strength. As solar continues to scale worldwide, we remain focused on providing reliable, efficient, and sustainable O&M services that help our customers optimise the performance and value of their assets.”
RES’ growth reflects its commitment to delivering consistent, high-quality service across diverse markets. Leveraging its international network of technical teams and flexible operating model, the company provides reliable, scalable O&M services focused on operational efficiency and sustainability.
About RES
RES is the world's largest independent renewable energy company. Present in 24 countries, it operates in the wind, solar, energy storage, green hydrogen, and energy transmission and distribution sectors. A leader in innovation for over 40 years, RES has more than 28 GW of renewable energy projects worldwide and plans to add 26 GW of new capacity over the next five years.
As a service provider, RES maintains a portfolio of 45 GW of renewable assets, offering high capacity and expertise in asset management, operation and maintenance, and spare parts. RES offers the market a range of cutting-edge digital products and solutions designed to maximize investment and deployment of renewable energy.
RES is the power behind a clean energy future where everyone has access to carbon-free energy, thanks to the global expertise, passion, and innovation of its 4,500 employees who combine their talents to transform the way energy is generated, stored, and delivered.
Visit: www.res-group.com
CONTACT FOR MORE INFORMATION:
Rory Brown
RES Press Office
+44 7436 144 750