Complete electrical installation services for homes and businesses across South Wales. New circuits, sockets, lighting, extensions, garden rooms, and appliance installations. NAPIT approved electricians serving Cardiff, Newport, Swansea, Bridgend, Caerphilly and all surrounding areas. Free quotes, full certification.
Electrical installations cover all new electrical work in your property – from adding new sockets and lighting circuits to installing appliances, outdoor power, and complete electrical systems for extensions and new builds. Every installation must meet the latest 18th Edition BS 7671 wiring regulations and be properly tested and certified with a Minor Works Certificate or Electrical Installation Certificate (EIC).
At Megalec Electrical Solutions, we provide professional electrical installation services across South Wales. Our NAPIT approved electricians handle everything from simple socket additions to complex multi-circuit installations for home renovations, extensions, and commercial fit-outs. All our work is self-certified under Part P of the Building Regulations, so you receive full compliance documentation without needing to notify your local authority separately.
Whether you need new circuits for a kitchen renovation, outdoor power for a garden office, EV charger installation, or complete electrical systems for new builds and extensions across Cardiff, Newport, Swansea, Bridgend, Caerphilly, Pontypridd, Barry, Merthyr Tydfil, Llanelli, Neath, Port Talbot, Cwmbran, Chepstow, Penarth, Cowbridge and all surrounding areas, we deliver safe, certified, and reliable electrical installations.
Our electrical installation services cover domestic, commercial, and industrial properties across South Wales. From a single additional socket in a Cardiff terraced house to a complete electrical fit-out for a Newport commercial unit, we have the expertise and capacity to deliver. We work alongside builders, architects, interior designers, and project managers to ensure seamless integration with wider renovation and construction projects.
South Wales has seen significant growth in home extensions, garden rooms, and loft conversions in recent years, and electrical installations are a critical part of every project. We provide complete electrical packages for extensions including lighting, sockets, heating controls, smoke alarms, and consumer unit upgrades where required. Our team covers all premium South Wales postcodes including Lisvane, Cyncoed, Penylan, Radyr, Whitchurch, Penarth, Cowbridge, Mumbles, Langland, Monmouth, Abergavenny, and Chepstow.
Complete electrical solutions for every need
Additional sockets, USB outlets, switches, and dedicated circuits for appliances installed throughout your property.
New lighting circuits, downlights, outdoor lighting, and smart lighting systems professionally wired and installed.
Complete electrical installations for kitchen and bathroom renovations including appliances, extractor fans, and IP-rated lighting.
Full electrical installations for home extensions, loft conversions, garden rooms, and new build properties.
Dedicated circuits and consumer unit upgrades to support electric vehicle charger installations.
Full electrical testing and certification for all installations with Building Regulations compliance documentation.
Professional, safe, and fully certified
We discuss your requirements, assess the property, and recommend the best electrical solutions for your needs.
Detailed installation plan and transparent quote covering all materials, labour, and certification.
Professional installation by our NAPIT approved electricians with clean cable routing and minimal disruption.
Full electrical testing, certification, and demonstration. Your installation is safe, compliant, and ready to use.
We discuss your requirements, assess the property, and recommend the best electrical solutions for your needs.
Detailed installation plan and transparent quote covering all materials, labour, and certification.
Professional installation by our NAPIT approved electricians with clean cable routing and minimal disruption.
Full electrical testing, certification, and demonstration. Your installation is safe, compliant, and ready to use.
Electrical installations must be completed to the highest standards to ensure safety and compliance. Megalec's NAPIT approved electricians bring over 10 years of experience, ensuring every installation is safe, reliable, and fully certified. We cover 30+ areas across South Wales and are trusted by hundreds of homeowners, landlords, and businesses.

Available throughout Cardiff, Newport, Swansea, Bridgend & surrounding areas
Costs vary depending on the scope of work. A single socket addition costs £80–£150. New lighting circuits cost £300–£600. A complete electrical installation for a single-storey extension typically costs £1,500–£3,000. Full rewires for extensions or renovations are quoted based on requirements. We always provide free, detailed quotes with no hidden charges.
Most new electrical installations in kitchens, bathrooms, and outdoors are notifiable under Building Regulations Part P. As NAPIT approved electricians, we can self-certify our work and provide all necessary compliance documentation including an Electrical Installation Certificate (EIC). This means you don't need to notify your local authority separately — we handle everything.
Yes, we provide complete electrical installations for home extensions, loft conversions, garage conversions, and garden rooms across South Wales. This includes lighting circuits, socket circuits, heating controls, smoke alarms, and consumer unit upgrades where required. We work alongside builders and project managers to ensure the electrical work integrates seamlessly with the wider project.
Absolutely. We install outdoor sockets, garden lighting, shed and outbuilding power supplies, hot tub circuits, garden office electrical systems, and EV charger circuits using weatherproof IP-rated equipment and proper earthing. All outdoor installations comply with BS 7671 requirements for external installations.
Yes, we regularly work alongside builders, architects, interior designers, and project managers on renovation and new build projects across South Wales. We can provide first and second fix electrical work, coordinate with other trades, and ensure the electrical installation is completed on schedule. We cover all areas from Cardiff and Newport to Swansea, Bridgend, and all surrounding towns.
Simple installations like adding sockets or a new lighting circuit take a few hours. Complete electrical installations for single-storey extensions typically take 2–3 days. Larger projects like full house renovations or commercial fit-outs can take 1–2 weeks. We provide realistic timelines with all quotes.
For new circuits and installations, you receive an Electrical Installation Certificate (EIC) which confirms the work complies with BS 7671. For minor additions to existing circuits, you receive a Minor Works Certificate (MWC). Both documents are required for Building Regulations compliance and are important for property sales and insurance purposes.
Yes, kitchen electrical installations are one of our most common services across South Wales. We install dedicated circuits for ovens, hobs, dishwashers, washing machines, and fridges, as well as under-cabinet lighting, extractor fan wiring, and additional sockets. All kitchen electrical work is carried out to Part P Building Regulations standards with full certification.
Yes, we install smart home electrical systems including smart lighting controls (Lutron, Hue, LIFX), smart switches and sockets, heating control wiring, and home automation infrastructure. Smart home installations are increasingly popular in premium South Wales properties across Cardiff, Newport, Swansea, and the Vale of Glamorgan.
Yes, we carry out commercial electrical installations for offices, retail units, restaurants, warehouses, and industrial premises across South Wales. Commercial installations include three-phase power, distribution boards, emergency lighting, fire alarm wiring, and data cabling infrastructure. We provide full commercial electrical certification and compliance documentation.
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Contact Megalec today for a free quote. Professional electrical installations with full certification.