We are the UK’s leading independent, power protection installer.

Critical Power Supplies is a fast growing, innovative company at the forefront of power and energy solution provision in the UK. We understand that whilst no two businesses are the same, a reliable power supply is vital for everyone and we are dedicated to making that a reality.

Our clients span the healthcare, IT, marine, retail and telecoms sectors. From that very first site meeting, our skilled team of experts create, implement and manage value added solutions that allow your business to run as smoothly as ours. Our independent manufacturer status and in-depth industry knowledge allows us to create bespoke, environmentally friendly packages that deliver on every level. So whether you’re looking for advice on uninterruptible power supplies, generators or static transfer switches, get in touch and see how we can change the way you work.

Critical Power Supplies – peace of mind when it matters.

About us

With 25 years’ experience of implementing power protection solutions, we know we can provide the right power supplies, project management and support for your business.

As the leading independent UK multi-brand supplier, we operate across a diverse range of clients. Ranging from corporates to end-users, we are equally happy working with M&E consultants, quantity surveyors, electrical contractors, right the way through to distributors and resellers. Still, even more crucially, we understand the vital need for sustainable uptime and power continuity in today’s business environments.

What does this mean for your business?

Whether a processing system in a financial institution, critical hospital environment, data centre infrastructure or manufacturing line; we have the experience, services and products necessary to ensure your power continuity – no matter what. More importantly we pride ourselves on:

Valuing people and building relationships

Going that extra mile

Understanding the importance of pre- and post-sales support

Being manufacturer independent – we choose the best solution

Operating sustainably and supplying energy efficient products & services

NOT being a ‘fit-and-forget’ solution

We understand the vital need for sustainable uptime and power continuity in today’s business environments



Taking care of secure power needs for all industry types.


Assured power protection for medical environments

IT Reliable electricity supply for critical applications



Robust UPS systems to last for the plant lifetime



Durable power protection for harsh surroundings



Bespoke UPS systems for highly disciplined settings



Flexible power protection to meet multiple requirements



Continuous uptime to ensure system availability



Our products

Everything you need to support your uninterruptible power supply (UPS).

Be it for standby power, fuel cells or open / closed generator solutions (300 VA to 6MVA), we offer a wide range of products. This includes an extensive off-the-shelf stock of critical parts, spares and ancillary products. With next day delivery options, we can provide fast product supply for routine and preventative maintenance.

All of our power solutions, are backed by an extensive service network, providing 24/7 support and monitoring. In addition, our UPS and generator systems are the most environmentally friendly, highly efficient schemes available.

Critical Power UPS

STS Solutions

Power Distribution Units

Connectivity Packages

Consumables & Spares

UPS Accessories

19” IT Rack Cabinets

Datacentre Solutions

DC Power Solutions

Voltage Optimisation

Power Conditioners

Standby Back-up Systems

On-Site Services

DCIM Software

Renewable Energy

Mobile Power Pack

Legacy Solutions



Critical Power are considered No. 1 for price, quality & customer service.

Find out more aboutour price promise on our website criticalpowersupplies.co.uk/pricepromise

We can provide fast product supply for routine & preventative maintenance.



Taking the hassle away

The complexities of power protection projects can mean you have to deal with several suppliers at once, need to use unfamiliar industry jargon and have limited idea on what is a realistic timescale. This is where our experienced project management services can step in by supporting the whole process and liaising with suppliers, so you only have to deal with us.

Our project management services include:

Power continuity planning & design

Site surveys

UPS health checks

Battery testing & replacement

Hire and rental

Factory witness testing

Logistics, location & relocation

Installation & commissioning

Maintenance & monitoring plans

Inspection, repair & upgrade

Warranties & extensions

Removal & recycling

Offering Turnkey solutions

What do we mean by turnkey? At Critical Power, it is about taking the time to truly understand your power protection needs. Ensuring you have the right uninterruptable power supply (UPS) solution for your business, so you don’t have to worry.  Giving you the assurance of business continuity, with a system that kicks in, just when you need it.

Our range of services is deliberately designed to allow you to use either the full power solutions package or select the services required. From  simply supplying a generator or one component,  right the way through to completing site surveys  and managing the whole project through to  fruition – we are happy to operate to any level  of support required and are practiced at getting  things right, first time


24/7 SUPPORT: Backup when you need it

We operate a 24/7, 365 days a year support service to ensure that your business achieves maximum continuity. Whether this is by phone, email or on-site, we are here to assist.

Operating nationwide, our engineers are trained and certified (by official bodies such as the ECA and the manufacturers whose equipment we supply). Alongside other qualifications including OHSAS 18001, SAFEcontractor and Personal Trackside Safety

(PTS), we are also ISO 9001 and ISO 14001 accredited. As a result, we have access to the  latest complete UPS turnkey product training, hardware updates, spares and technical documentation to ensure your systems are the most robust and resilient they can be.

Phone: 0800 978 8988

Email: sales@criticalpowersupplies.co.uk