Solutions

Our passionate and experienced people deliver successful clean energy projects globally.

Our offices

Like our business, we’re truly global – but proudly local. Find contact and location details for every RES office.

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Operations & Maintenance

Battery Energy Storage Systems (BESS) O&M

We provide increased asset performance and unparalleled outage management for battery energy storage systems.

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Minimising downtime, maximising performance

Managing a range of storage revenue contracts for owners, we take a proactive approach and identify opportunities for making improvements, supported by our deep technical and commercial understanding.

We also have a rigorous high voltage management system with internal HV teams, authorised to operate and maintain HV assets ensuring rapid response times and minimising downtime.

Why RES?

With specialists in SCADA, condition monitoring, performance analysis, system design and more, you can trust RES to safely manage your battery energy storage assets.


Exemplary health and safety performance

A secure work environment that puts people first, delivering best-in-class health and safety performance.

24/7 support

Our operational control centre is always accessible, giving you continuous support and monitoring.

Analysis and optimisation

Using in-house developed diagnostic tools, we analyse all sources of data to increase performance and maintain asset value.

Spares management

Our novel and sophisticated parts management process helps your projects perform more efficiently and reduces downtime.

What we offer

Solutions are tailored to meet your specific needs, whether that’s long-term support or standalone services for individual energy storage projects.

  • HV services​
  • Asset upgrades and retrofit campaigns ​
  • Preventative (scheduled maintenance​, inspections​, audits and asset health assessments​)
  • Corrective (unscheduled maintenance​, performance warranties​, major component replacement)
  • 24/7 remote monitoring ​

  • Condition monitoring and SCADA analysis​
  • Supervision ​
  • Decommissioning​
  • Parts supply / resale and repair
  • RESolve EMS / PPC​
  • Fire systems & security​

Latest Resources

Learn more about our projects.

Energyear Investment, Solar & Storage 2025

From 25-26 November, Energyear UK – Investment, solar and storage 2025 is a leading networking conference for the renewable energy sector, part of the broader Energyear Tour that takes place across Europe and Latin America. It provides a dynamic platform for influential figures and high-level decision-makers to connect, discuss challenges…

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Hitting the right note in battery storage – how to avoid costly delays

Battery energy storage systems (BESS) are moving from niche investments to critical infrastructure. But while demand is rising fast and technology is advancing to match, a stubborn challenge frequently resurfaces – integration risk. Too often, the different components and subsystems of a storage project are brought together only in the…

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Flexibility is the future of solar and storage

The solar industry has never stood still, and today it’s evolving faster than ever. Once seen as a straightforward generation asset, solar is now at the center of increasingly complex systems that pair generation with storage and other distributed resources. As markets shift, regulations tighten and new technologies emerge, one…

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