London, UK – 20 January 2026 – RES, the world’s largest independent renewable energy company, has completed the sale of the consented Dunbeg South Wind Farm near Limavady, Northern Ireland to Innagreen Investments, marking Innagreen’s first investment in the UK renewable energy market. Developed by RES, the consented project will…
Technologies
Hydro
Using our wealth of operations and maintenance experience we maximise the positive contributions of hydropower to a net-zero future.
Speak to our team
What is Hydropower?
Hydroelectric power, one of the cleanest and most sustainable technologies, is a renewable source that harnesses the power of moving water (rivers or reservoirs) to generate electricity. It works by passing water through turbines that convert kinetic energy into mechanical energy and then into electrical energy using a generator. In addition, it allows water flow to be regulated and energy to be stored, contributing to the stability of the electrical system.
Why RES?
Our people-first approach and decades of experience has led to the development of robust systems of work, ensuring your assets perform safely and reliably.
Solutions are tailored to meet your specific needs, whether that’s long-term support or standalone services for individual projects.
Exemplary health and safety performance
A secure work environment that puts people first, delivering best-in-class health and safety performance.
Technical expertise
Highly skilled engineers and technical specialists provide first-class operations and maintenance support, with the added value of our experience on Kaplan and Pelton Turbines.
24/7 support
Our operational control centre is always accessible, giving you continuous support.
Decades of experience
Building and delivering innovative and tailor-made solutions that work for you.
Comprehensive service
Our skilled engineers go beyond just boots on the ground, focusing on delivering competitive and comprehensive services to boost revenue and decrease costs.
What we offer
We specialise in the operation and maintenance of hydroelectric power plants, keeping them safe, efficient and ready for the future. Our team combines decades of hands-on expertise with innovative solutions to ensure every asset performs at its best.
By tailoring our support to each facility, we help operators maximise availability, extend asset life and contribute to a sustainable net-zero future.
- Operation of power stations and associated facilities
- Preventive, predictive, corrective and regulatory maintenance
- Inspections & reviews
- High voltage services (HV)
- Spare parts management
- 24/7 remote monitoring and fault reset
- Unplanned maintenance
- Performance guarantees
- Replacement of major components
- Asset upgrades and modernisation campaigns
- Condition monitoring and SCADA analysis
- Life extension, repowering and decommissioning
- Energy performance analysis and optimisation
Latest resources
Read our latest news and blogs.
Intersolar 2026
From 23-25 June, we will take our RES Lounge to Munich for Intersolar 2026. Intersolar serves as a major platform for showcasing the latest solar innovations, technologies, and solutions in the renewable energy industry. It provides a space for networking, knowledge exchange, and collaboration, with opportunities to explore new business…
Global Offshore Wind 2026
From June 16-17, RES will be attending Global Offshore Wind, organised by RenewableUK, is the the UK’s largest meeting place for the global offshore wind industry. Our development, support services and digital teams will be in attendance. Come and visit our stand and find out more about how we can…