The result reinforces RES’ position as the independent service provider with the widest geographical reach in solar operations and maintenance – backed by the world’s largest internationally certified GWO solar workforce. London, UK – 1 September 2026 – Wood Mackenzie has ranked RES second in its annual global solar operations…
Solutions
Our passionate and experienced people deliver successful clean energy projects globally.
Technologies
Driving a clean energy future through state-of-the-art renewable technologies.
See all technologiesResources
Browse our latest resources, including company updates, customer stories, industry insights, and research reports.
See all resourcesCareers
Join a collaborative team of passionate individuals who engage in meaningful, stimulating, and world-changing work.
Learn moreAbout RES
We live our mission, celebrate the people making it happen and transform the way the world produces and consumes energy.
See about usOur offices
Like our business, we’re truly global – but proudly local. Find contact and location details for every RES office.
Contact us- Home
- Technologies
- Hydro
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.
RES retains second place in Wood Mackenzie’s 2026 solar O&M rankings, backed by world’s largest GWO-certified solar workforce
Seeing the full lifecycle: Building blade resilience from day one
A turbine blade’s journey spans far more than its years in operation and every stage brings decisions that affect future reliability, output and cost. Blade lifecycle management means making informed structural decisions at every phase of a turbine blade’s life, from design and procurement through operation to final decommissioning. The…
Quo Vadis Conference 2026
From 14-15 October 2026. “Quo Vadis, Wind Energy?” is Latin for “Where are you going, wind energy?”) 2026 will host the 20th Quo Vadis Conference in Budapest, Hungary. Quo Vadis is recognised by wind farm owners and operators as one of the most important and valuable events in the wind industry. …