Commercial Electrical Contractors in Cardiff

Commercial and industrial electrical contracting across Cardiff, Newport, Bridgend, Swansea and South Wales - installation and upgrades, EICR and fixed wire testing, emergency lighting and fire alarms, EV charging and planned maintenance - from engineering teams based in Gloucestershire, over the Severn and about an hour and a quarter away.

Talk to our Cardiff electrical team Call 01420 566822

01420 566822

Rossair is a commercial and industrial electrical contractor covering Cardiff and South Wales from engineering teams based in Gloucestershire. We install and upgrade power, distribution and lighting, carry out EICR testing, install and service emergency lighting and fire alarm systems, install commercial EV chargers and run electrical maintenance contracts for offices, retail parks, schools and universities, NHS and care buildings and industrial sites along the M4. Rossair has already delivered in Cardiff: the Marks and Spencer flagship at Culverhouse Cross retail park had new air handling units, an LTHW boiler and dedicated ducting installed in a two-month programme with weekly client updates.

M&S: Culverhouse Cross, Cardiff - delivered project
NICEIC: Registered for installation and testing
24/7: Reactive cover for contract clients
1973: Electrical and mechanical contractor since

A building services contractor that already works in Cardiff

Cardiff and South Wales have plenty of good local electricians. What the region has fewer of are M&E contractors sized for an estate - a retail park, a hospital, a university, a care group or a multi-site portfolio - where the electrical work has to be programmed around the mechanical plant and the people in the building. Rossair delivered the Marks and Spencer Culverhouse Cross plant replacement on exactly that basis, and the electrical service runs the same way: engineering teams based in Gloucestershire, over the Prince of Wales Bridge, with contract management, helpdesk and accounts at the Basingstoke head office and a named account manager for every contract client.

Commercial and industrial electrical services in Cardiff

Installation and upgrades

Power and distribution - mains, sub-mains, distribution boards and 3-phase supplies - plus lighting schemes, LED upgrades and controls for offices, classrooms, wards, warehouses and plant rooms across Cardiff. Designed, installed and certificated to BS 7671 by Rossair engineers. Electrical services.

EICR and fixed wire testing

Periodic inspection and testing of the fixed installation, every circuit tested and every observation coded C1 to C3, with the remedial work carried out by the same engineers. Phased around occupied buildings - evenings, weekends and term breaks. Commercial EICR.

Emergency lighting and fire alarms

Emergency lighting designed, installed and tested to BS 5266-1, fire alarm systems to BS 5839-1 - monthly and annual duration tests, periodic servicing and the cause-and-effect interfaces with the ventilation plant. Life safety systems.

Electrical maintenance contracts

Planned electrical PPM scheduled to SFG20 - distribution boards, emergency lighting, fire alarm servicing and the EICR cycle - usually on the same contract as the HVAC plant. Contract clients in Cardiff and South Wales have 24/7 reactive cover, 365 days a year, from engineers based in Gloucestershire, with response times agreed in the contract and a 24-hour job report after every visit. Maintenance contracts.

Commercial EV charging

Workplace, fleet and car-park charging - supply assessment, load management, DNO application and installation of 7 kW to 22 kW AC and DC rapid chargers, integrated with solar PV and battery storage where the site has it. EV charger installation.

Where we work in Cardiff

Cardiff city centre and Cardiff Bay, Culverhouse Cross, Llanishen, St Mellons, Barry, Penarth, Caerphilly, Pontypridd, Newport, Cwmbran, Bridgend, Port Talbot and Swansea, and the industrial and retail estates along the M4 through South Wales. Offices, retail parks, schools and universities, NHS and community health buildings, care homes and manufacturing sites.

Why estates stay with Rossair

We show up. We do it properly. We send the paperwork. A named account manager, the same engineers year after year, and a compliance pack - certificates, EICRs, emergency lighting and fire alarm logbooks - your auditor can actually use. Rossair has been looking after commercial building services since 1973, and the contracts that last longest are the ones where nobody has to chase us.

Quick facts

Commercial electrical contractors in Cardiff - the facts

Coverage, services, standards and registrations for commercial and industrial electrical work in Cardiff.

Service: Commercial and industrial electrical contracting - Cardiff and South Wales
Areas covered: Cardiff, Cardiff Bay, Culverhouse Cross, Barry, Penarth, Caerphilly, Pontypridd, Newport, Cwmbran, Bridgend, Swansea
Named Cardiff project: Marks and Spencer, Culverhouse Cross retail park - AHUs, LTHW boiler and ducting, two-month delivery
Engineers: Engineering teams based in Gloucestershire, over the Prince of Wales Bridge
Head office: Hampshire HQ, 4th Floor, Grosvenor House, Basing View, Basingstoke, Hampshire RG21 4HG
Services: Installation, distribution, lighting, EICR and testing, emergency lighting, fire alarms, EV charging, maintenance
Registration: NICEIC - installation and inspection and testing
Standards: BS 7671, BS 5266-1, BS 5839-1, SFG20, Electricity at Work Regulations 1989
Reactive cover: 24/7, 365 days for contract clients; new enquiries called back within one working day
In trade since: 1973
Telephone: 01420 566822

Frequently asked

Electrical contractors in Cardiff - common questions

What electrical work does Rossair do in Cardiff?

Commercial and industrial electrical contracting across Cardiff: power and distribution upgrades, lighting and LED schemes, EICR and fixed wire testing, emergency lighting and fire alarm systems, commercial EV charger installation and planned electrical maintenance contracts. All work is carried out by Rossair engineers and certificated to BS 7671.

Which parts of Cardiff and South Wales does Rossair cover?

Cardiff city centre and Cardiff Bay, Culverhouse Cross, Llanishen, St Mellons, Barry, Penarth, Caerphilly and Pontypridd, plus Newport, Cwmbran, Bridgend, Port Talbot and Swansea along the M4. Engineering teams are based in Gloucestershire, about an hour and a quarter away over the Prince of Wales Bridge.

Has Rossair worked in Cardiff before?

Yes. Rossair replaced the plant at the Marks and Spencer flagship store at Culverhouse Cross retail park, Cardiff - new ceiling-mounted air handling units, an LTHW boiler and dedicated ducting - delivered in two months with weekly client updates and the store trading throughout. The electrical service runs on the same programme-led basis.

Can Rossair carry out a commercial EICR on our Cardiff or Newport premises out of hours?

Yes. Commercial EICR and fixed wire testing across South Wales is phased board by board around occupied buildings - evenings, weekends and term breaks where circuits cannot be isolated during the day - with remedial work carried out by the same engineers and the certificate filed in your compliance pack.

Can electrical and HVAC maintenance be combined for a South Wales site?

Yes. Electrical PPM - distribution boards, emergency lighting, fire alarm servicing and the EICR cycle - goes on the same SFG20 schedule as the heating, ventilation and air conditioning, under one contract with one account manager and one compliance pack.

Is Rossair a NICEIC-registered electrical contractor?

Yes. Rossair is NICEIC registered for electrical installation and for inspection and testing, so installation certificates and EICRs are issued under the scheme. Rossair is also Gas Safe and REFCOM F-Gas registered and Constructionline and SafeContractor accredited.

If we’re not the right fit, we’ll tell you who is

Talk to our Cardiff electrical team

Tell us about the building - sites, what needs installing, testing or maintaining, and when. Your enquiry goes straight to the team. We call back within one working day.