Electrical Upgrades — The Foundation of a Great Solar System
A solar or battery installation is only as good as the electrical infrastructure it connects to. Many Cardiff homes — particularly older properties in areas like Roath, Canton and Splott — have ageing consumer units, insufficient cable capacity or outdated wiring that needs upgrading before a solar system can be safely installed.
GL Solar's NAPIT-approved electricians carry out all the electrical upgrade work needed to support your solar or battery installation. From consumer unit replacements and cable upgrades to full rewires and earthing improvements, we ensure your home's electrical system is safe, compliant and ready for renewable energy.
We can also carry out electrical upgrades as a standalone service — not just in connection with solar installations. If your home has an old fuse board, insufficient circuits or any electrical safety concerns, our Cardiff team is here to help.
What's Included
Consumer Unit Replacement
Replace your old fuse board with a modern consumer unit with RCD and RCBO protection.
Cable Upgrades
Upgrade cable sizes to support solar inverters, battery systems and EV chargers.
Earthing & Bonding
Earthing and bonding upgrades to meet current regulations and support solar installation.
Additional Circuits
New circuits for solar inverters, battery systems, EV chargers and other loads.
Electrical Safety Inspection
EICR (Electrical Installation Condition Report) to identify any existing issues.
Electrical Certificates
All work certified with the appropriate electrical installation certificates.
Our Process
Electrical Assessment
We assess your existing electrical installation to identify any upgrades needed for solar or battery.
Upgrade Plan
We provide a clear plan and fixed price quote for all required electrical upgrades.
Consumer Unit Upgrade
If required, we replace your consumer unit with a modern unit with full RCD protection.
Cable & Circuit Work
We install any new cables and circuits required for your solar, battery or EV charger.
Testing & Inspection
All electrical work is tested and inspected to current BS 7671 standards.
Certification
We issue all required electrical installation certificates and notify Building Control.
Why Choose GL Solar Cardiff?
NAPIT Approved
All electrical work carried out by NAPIT-approved electricians.
BS 7671 Compliant
All work complies with the latest edition of the IET Wiring Regulations.
Cardiff Based
Local team with fast response times across Cardiff and South Wales.
Full Certification
All work certified and notified to Building Control as required.
“Our house in Canton had an old fuse board that needed replacing before solar could be installed. GL Solar sorted the consumer unit upgrade and the solar installation in one visit. Everything was done to a really high standard and the team were brilliant.”
Frequently Asked Questions
Areas We Cover in Cardiff & South Wales
GL Solar provides Electrical Upgrades services across Cardiff and the wider South Wales region. Whether you're in the city centre or the surrounding valleys, our local team is ready to help.