About Us

Known as 'the power quality people',
here's our story...

Five decades of power quality

Based in the industrial heart of Britain, our highly skilled power quality people have been building, installing & maintaining power quality systems since 1973.

1973
First established as a limited company specialising in, you guessed it, power capacitors, in the Moss family home garage.
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1979
The business moves into commercial premises in Sheldon, Birmingham, now with additional resource to install, commission & survey.
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1984
First Transwave converter sold – offering power quality solutions to smaller businesses and hobbyists, not just large-scale commercial customers.
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1985
The current premises in Tyselely, Birmingham becomes the new home for the growing Power Capacitors team.
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1988
We celebrate our first year of breaking through £1million in sales! A huge milestone for a small start-up business.
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1994
Power Capacitors became the UK distributor for Electronicon high quality capacitors. This agreement is still in place 30+ years on.
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1996
ISO 9001 accreditation achieved (ongoing). The company continues to grow.
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2001
We employ our first Site Services Engineer, as we begin to offer on-site surveys and installation to our services.
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2006
The business continues to go from strength to strength, reaching £2million in sales! Followed swiftly with the employment of 3 more engineers.
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2011
Power Capacitors goes international, with a contract awarded by the Ethiopian Government, taking turnover that year to over £3million.
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2012
Our site services team grows to 5 engineers (and the office gets a snazzy refurb too).
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2014
Our first order placed with Merus Power Dynamics Oy (Finland) at which point we decide to add 2 more engineers to the site service team.
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2021
7 years on from placing our first order, we become the UK distributor for Merus Dynamics Oy (Finland).
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2023
We reach a major milestone for the business – our 50 years anniversary! A huge achievement of which we’re very proud.
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2024
Another year of celebration! 40 years of selling Transwave converters, and 30 years as an Electronicon distributor – the longest serving in the world!
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2025
We are acquired by forward-thinking industrial-focused investors Tratteon, whose long-term objective is to continue and build on the great work of our founders.
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Our story

Founded on engineering excellence, continuous innovation and a customer-first approach, we specialise in providing not just products, but complete power quality solutions that give our customers complete peace of mind that their electrical systems are optimised to be as energy efficient, stable and reliable as they can possibly be.

With carbon zero targets and sustainability a key focus for all industries today, we’re proud that our mission to improve energy efficiency and reduce wasted energy started over 50 years ago! It means we’re perfectly placed to help you achieve your power quality objectives, saving energy and cost from day one. Power quality is an area of increasing importance as our customers transition to greener power sources and more energy efficient appliances.

Book a free survey by one of expert engineers today!

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Our people

We’re honoured to have such long serving and knowledgeable power quality experts in our team. From our admin team to our analysts and our engineers, you couldn’t meet a nicer bunch of people, who all really know their stuff.

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What we do

We sell individual power quality products (such as capacitors, reactors, contactors, Reactive power relays etc.) to a wide portfolio of customers across the UK, as well as specifying and building bespoke power quality systems, all backed up with an extensive range of on-site services from surveys to installations and maintenance.

Our solutions

Our solutions include:

Our people keep your people and your business moving. The quality and reliability of your power supply is paramount. Downtime is simply not an option. Having the right power quality system installed and properly maintained is the only option.

  • Power factor control panels
  • Power factor correction chassis & assemblies
  • Active harmonic filters & HPQ
  • Load & harmonic power quality surveys
  • On-site maintenance & fault finding
  • Capacitors for power electronics
  • Components distribution
  • Transwave converters
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Our customers

Our customers include:
  • Control panel builders
  • Switchgear manufacturers
  • HV engineers
  • Renewable energy integrations
  • EV Charging providers
  • Electrical contractors
  • Building services/maintenance providers
  • Manufacturers of power quality & power conversion equipment
  • Industrial & commercial power users, including manufacturing, food, pharmaceutical, building, automotive, financial
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  • Power Factor Correction
    Bespoke solutions to fit all applications
    Learn More
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  • Power Electronics Capacitors
    High quality products, delivered fast
    Learn More
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  • Transwave
    Phase converters for small businesses & hobbyists
    Learn More
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Which Power Capacitors solution best fits what you’re
looking for? Just give us a call and talk to our experts,
or explore more here:

Call 0121 708 4511

Why choose us?
1.
Knowledgeable team

Available by phone, email or in person

2.
Expert advice

Power quality has been our complete focus since 1973

3.
Bespoke design

Products & systems made to fit your unique application

4.
Quality approved

Manufacturing to ISO standards since 1996

5.
Comprehensive stockholding

Capacitors, reactors, contactors, reactive power relays & more

6.
Rapid response time

On-site within 24hrs for an emergency

7.
Short lead times

Just 4 - 12 weeks for bespoke panels

What our customers say

★★★★★
"We gave them a complex problem, and they came back with a neat, bespoke solution that just worked."

Airports

★★★★★
"Everything arrived on time, well built, and ready to install."

Hospitals

★★★★★
"It was a relief to talk to people who weren’t just selling but genuinely understood power quality."

Oil & gas