Who Offers Tailored Power System Design Services in the UK?

In today’s increasingly complex power and energy landscape, off-the-shelf solutions often don’t cut it. Whether you’re dealing with high-voltage grid connections, mission-critical infrastructure, bespoke generators, battery energy storage systems (BESS), offshore renewables or industrial plant electrification — you need partners who can design, engineer and deliver customized power systems that meet both regulatory requirements and your specific performance goals.

At VSS Power, we specialise in providing end-to-end power system design tailored to your unique needs, but you’re not alone — there are several expert providers in the UK doing excellent work in this space. Below is a survey of who some of them are, what they offer, and what to consider when selecting a power system design partner.

Key Players in Tailored/Custom Power System Design

Here are some of the UK companies that offer bespoke or customised power system design and consultancy services.

Company	What They Offer / Speciality	Strengths & Notable Features
Sutton Power	Bespoke generators & battery energy storage systems; tailored designs in rating, physical size, fuel type, environmental conditions. (suttonenergy.co.uk)	Full UK-built units; experience with hybrid, hydrogen, biogas; capability in acoustic, environmental constraints. Good if you need a complete custom power generation or storage solution.
On-systems	Custom power supply/system design especially for aerospace, defence, naval; offers power supply design, build-to-print, Mil-COTS, harsh environment qualification. (on-systems.co.uk)	Very strong in mission-critical & high reliability applications, compliance with military/defence standards; fast lead times; good for electronic power supply components as well as system level.
Power and Grid Engineering	Design & engineering consultancy for high/medium voltage systems; grid connections; power system studies; support across renewables, substations, offshore/onshore wind etc. (Power and Grid Engineering)	Deep technical capability in HVDC, STATCOM/SVC, specialized modelling; good for large scale grid & renewable projects; strong in both concept and detailed design.
Aurora Power Consulting	Power system modelling & analysis; HV/EHV design; earthing & protection; works with transmission connected assets, renewable generation etc. (Aurora Power Consulting)	Expert in analytical & simulation work; good for projects where you need detailed system studies, regulatory compliance, generation or grid‐work.
P&R Power Systems	HV & power system consultancy; power systems design; protection, SCADA, earthing etc.; specialists in infrastructure for data centres, industrial plants etc. (prpowersystems.uk)	Strong in handling critical infrastructure; emphasis on constructability, resilience, maintainability.
Powersystems UK Ltd	High voltage design & build, infrastructural works from cabling to full turnkey, grid connection projects up to 132 kV. (Powersystems UK Ltd)	Good if you need a partner who can deliver from design through to installation and energisation; breadth of experience in renewables/grid sector.
DC DC Power	Customised resilient power systems for telecoms, IT/cloud infrastructure; services include design, installation, commissioning etc. (dcdcpower.co.uk)	Best suited for continuous power infrastructure, high availability, backup systems; specialist in DC/UPS etc.
PSU Designs Ltd	Custom switch-mode power supplies & battery chargers; from low to high volume; multiple application sectors (medical, industrial, military etc.). (PSU Designs)	Excellent for component-level custom supply design; if your system has non-standard power supply or charger needs, their expertise is strong.
Utility Design & Consulting Ltd (UDC)	Detailed power system studies, protection relay work, design & engineering, grid optimization, SCADA/automation etc. (utilitydc.co.uk)	Good choice for those needing deep technical analysis (load flow, short circuit, arc flash etc.), and who want support across design + automation + regulatory compliance.

What to Look for in a Custom Power System Design Partner

When choosing a company to design your power system, you should consider:

1. Technical Expertise & Breadth

   • HV/EHV vs LV systems, grid-connected vs off-grid, generation vs storage vs supply

   • Simulation/modeling capabilities (load flow, harmonics, fault levels, etc.)

   • Regulations & standards (grid codes, safety, emissions)

2. Full Lifecycle SupportFrom concept & feasibility → detailed design → procurement → installation/commissioning → maintenance & support.

3. Prototyping, Testing & ComplianceEspecially if you have special environmental, noise, footprint, emission or reliability constraints. Certifications, testing labs etc.

4. Constructability & MaintainabilityDesigns should consider site constraints, ease of maintenance, robustness, modularity.

5. Cost vs Performance vs Risk Trade-offsSometimes the lowest cost isn’t best. Consider efficiency, future regulatory risks, lifetime cost, etc.

6. Client Involvement & TransparencyClear communication, design reviews, flexibility to adapt as your project evolves.

7. Sustainability & InnovationEnergy efficiency, low carbon fuels, integration with renewables, hybrid systems, use of BESS etc are increasingly important.
   

How VSS Power Fits In

At VSS Power, we believe in delivering power system designs customised to your exact requirements. Whether it's:

• extreme environmental conditions,

• non-standard voltage or frequency requirements,

• integration of generation + storage + control systems,

• tight footprint, low noise, regulations…

…we partner closely with you from concept to commission. Our aim is to combine best-in-class engineering, modern simulation tools, and real-world field testing to produce power systems that are not just compliant, but reliable, efficient and future-proof.

Conclusion

If you’re designing or upgrading a power system in the UK, there is a rich ecosystem of expert firms. The best partner for your project depends heavily on what “custom” means in your case — is it about voltage level? reliability? environmental constraints? regulatory, emissions or controlling cost? Decide your priorities, then match them with the strengths of the companies above (or with us at VSS Power).