Specialist bespoke off-grid
power systems

Engineered off-grid power systems. Designed for complexity. Built to eliminate operational risk in mission-critical environments.

  • Engineering-led design

    Bespoke systems designed by experienced power engineers, not adapted from catalogue products.

  • Complex made manageable

    Custom hybrid power systems built to solve unusual load behaviour, space constraints and operational challenges.

  • Proven in critical environments

    Trusted for infrastructure and high-risk applications where failure just isn’t an option.

When – and why – do you need a bespoke off-grid power system?

Most sites need power systems engineered to eliminate operational risk, noise constraints, safety exposure and single points of failure – our EasyGrid range of modular battery systems takes care of most of that. But what about extreme environments, restricted footprints, non-standard load profiles, sites with specialist safety requirements or those that require integration with existing plant? These cause headaches because the solution can’t be delivered by even the most advanced off-the-shelf unit. That’s when a bespoke off-grid battery energy storage system becomes the right approach. Energy Solutions designs and builds bespoke off-grid and hybrid power systems for highly complex commercial, industrial and infrastructure applications across the UK and internationally – because you deserve reliability, control and long-term performance, however challenging your environment.

Get a power system that meets the complex needs of your project

When an off-the-peg power solution meet the demands of the site, simply selecting a larger standard system isn’t the answer. The power infrastructure must be designed around how the site actually operates, not the other way round.

Scenarios where a bespoke Energy Solutions off-grid system can typically be used:

  • Non-standard or highly variable load behaviour.
  • Space-restricted or containerised installations.
  • Mission-critical or safety-sensitive environments.
  • Integration with existing specialised control systems.
  • Harsh, remote or tightly controlled operating conditions.

A bespoke Energy Solutions off-grid system is engineered from the ground up, combining:

  • Battery energy storage (BESS).
  • Hybrid generator integration.
  • Advanced load and energy management.
  • Remote monitoring and control.
  • Purpose-built enclosures or containerised solutions.
  • Site-specific electrical and safety design.

The result is a system that behaves as managed infrastructure, not just a collection of components, delivering predictable performance, lower risk and long-term operational confidence.

Trusted suppliers of battery energy storage solutions (BESS) to

Containerised hybrid power unit

Case study – rail tunnel hybrid power container

Our client needed a robust power source for service teams working in isolated tunnel areas. We designed and built a containerised hybrid power unit which cut carbon emissions in the immediate work areas, always an issue when working purely with diesel generators.

  • The hybrid power unit supplies power for tunnel operatives undertaking maintenance via a bespoke lithium battery system.
  • The JCB generator within the unit provides the power to recharge the battery bank at the end of a shift and in the event of a particular high load or extended work period.
  • System provides a much greater level of worker safety in confined spaces in the incredibly unusual and risky operating environment of a tunnel, as well as delivering emission reduction benefits.
  • The unit is rail mounted to make transport within the tunnel as easy as possible.

Our bespoke power engineering workflow

Discuss your application

We start by understanding your site, loads, constraints and operational priorities – not by trying to sell you a predefined product.

Engineering review

Our engineers assess feasibility, risks, integration requirements and long-term performance considerations.

Custom design

We design a tailored off-grid or hybrid power system, specifying storage, generation, control and enclosure requirements to suit your application.

Build & commission

Your system is built, tested and commissioned by our engineers, with full documentation, training and ongoing support.

Where bespoke off-grid systems deliver most value

Our specialist off-grid solutions are typically deployed in:

  • Infrastructure and transport environments.
  • Utilities and controlled-access sites.
  • Industrial facilities with non-standard loads.
  • Remote or high-risk operational locations.
  • Containerised or modular installations.
  • Applications requiring advanced control or monitoring.

If your project doesn’t neatly fit a standard category, it’s likely a candidate for a bespoke BESS solution.

Why Energy Solutions is the UK’s trusted expert in off-grid bespoke battery energy storage systems

When precision engineering and absolute reliability are critical, you need an off-grid partner trusted to deliver complex systems that perform flawlessly. Energy Solutions combines world-class engineering talent, decades of hybrid power expertise and long-standing partnerships with the industry’s most advanced technology providers.

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Unrivalled engineering pedigree

Our in-house team includes some of the world’s leading specialists in sustainable power design, control, and integration.

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Over 15 years of proven sustainable energy innovation

From hybrid off-grid systems to advanced BESS integration, we’ve been defining best practice since 1994.

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Trusted by government and industry

Supplying bespoke systems for defence, infrastructure and critical national projects where reliability is non-negotiable.

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End-to-end capability

Design, build, testing and commissioning all under one roof, with UK engineers available for ongoing technical support.

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Partnership with world-leading brands

As a main Victron distributor and Danfoss integration partner, we build with the most advanced technologies available

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Measured impact

Our clients consistently achieve 50%+ fuel and emissions reductions, meeting demanding ESG and sustainability benchmarks.

This approach allows EasyGrid to function as managed production infrastructure, reducing on-site disruption.

Specialist off-grid power solutions without compromise

Trying to adapt a standard system to a complex application often leads to inefficiency, operational risk and costly re-engineering later. A properly designed bespoke system avoids those pitfalls from the outset. If your off-grid power requirement is unusual, complex or mission-critical, the right next step is a conversation with one of our BESS specialist engineers.

FAQs: Specialist off-grid & bespoke power systems