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.
Image Credit: RES
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 optimize 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.