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Optimize your energy assets


operational assets supported


control center


global portfolio

We understand the importance of optimizing assets – maximizing value and protecting revenue for project owners. As an established asset manager and O&M provider, we support 6GW of renewable and energy storage projects for clients across the globe. Our experienced team can support solar, storage, onshore and offshore wind, including offshore transmission assets.

Our client-focused approach maximizes generation through optimizing performance and reducing downtime to increase asset value. With our state-of-the-art 24/7/365 days a year control center you get peace of mind that your assets are in safe hands.

A recent study by DNV GL demonstrated that assets managed by RES perform 1% better than industry standard.

Asset Management

Our team provides a complete and comprehensive service including remote site monitoring, planning of all maintenance work, budget forecasting, data management and transparent reporting of your asset’s operational performance.

We have extensive relationships with turbine suppliers, equipment manufacturers and service providers. Our independent position allows us to select the best technology or service provider to meet clients’ requirements while leveraging RES’ market position to secure value for money.

With our state-of-the-art 24/7/365 control centre - you get peace of mind that your solar, storage, onshore or offshore wind assets are in safe hands.

Operating an asset to such a level of efficiency that you unlock even a fraction of extra revenue is to be welcomed, but that RES go that extra mile to unlock the true potential of our renewables installations makes them a very valuable partner.

Freddy Murray, Associate Director Aviva Investors


Operations and Maintenance



With nearly 40 years’ experience developing, constructing and operating renewable energy assets, we understand the challenges and motivations of stabilizing and improving the long-term yield of onshore and offshore wind, solar and energy storage assets.

Our comprehensive O&M approach is unique to the market and will help you minimize cost and lost production, as well as help improve future production.

As an independent service provider, we focus on what matters to you - from delivering innovation to analysis, optimization and condition monitoring services. We go beyond just boots on the ground.

We know solutions need to be tailored to meet your needs which is why RES offers O&M services under long-term contracts as well as standalone services for individual projects.

As an O&M contractor, RES offers unrivalled performance. Our asset’s performance continues to exceed expectations and we benefit from exceptional service from the technical experts at RES.

Saadat Ullah, Technical Portfolio Manager Foresight Group


Our team can meet your needs

Andrew Johnstone
UK and Irish assets: Andrew Johnstone +44 141 404 5689
Tom Mactier
Australian assets: Tom Mactier +61 432 188 331
Marc Holtz
French assets: Marc Holtz +33 432 760 341
Bart Geleynse
North American assets: Bart Geleynse +1 438 266 1913
Britta Ersman
Nordics: Britta Ersman +46 31 339 5907

Contact us

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