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.

Future-proofing BESS: Advanced controls for evolving energy markets

by Alex Bamberger, VP of Digital Solutions The nature of grid balancing services has changed rapidly in the last five years, with new services introduced that reward fast, accurate flexibility. This has increased battery participation significantly while improving project economics and lowering the cost of balancing variable generation to the…

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Energy Storage Summit 2026

From 24 to 25 February, our Asset Management team will be attending the Energy Storage Summit 2026 in the UK. The Summit brings together senior stakeholders across the energy storage sector to discuss market design, financing, long duration storage, grid integration and emerging revenue streams.We look forward to meeting with…

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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…

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