Solar Battery Installation — Store More, Save More in Cardiff
Without battery storage, a typical Cardiff home uses only 20–30% of the solar energy it generates — the rest is exported to the grid, often at a lower rate than you pay to import. Adding a solar battery changes everything, allowing you to store your surplus solar energy and use it in the evenings, on cloudy days and during peak tariff times.
GL Solar installs solar batteries from all leading manufacturers across Cardiff and South Wales. Whether you're looking for a Tesla Powerwall, GivEnergy, Solax, or another brand, our MCS certified team will recommend and install the right battery for your home and usage patterns.
We also retrofit battery storage to existing solar systems — so if you already have panels, we can add storage without replacing your current setup.
What's Included
Energy Usage Analysis
We analyse your consumption patterns to recommend the right battery size for your Cardiff home.
Battery Installation
Professional installation of your chosen battery system by our Cardiff-based electricians.
Inverter Integration
Seamless integration with your existing solar inverter or new hybrid inverter installation.
Smart Energy Management
Configure your battery to charge from solar, off-peak tariffs or both for maximum savings.
Backup Power Setup
Configure backup power functionality to keep essential appliances running during power cuts.
MCS Certification
All battery installations are MCS certified for warranty and incentive eligibility.
Our Process
Free Energy Assessment
We review your energy bills and solar generation data to calculate the optimal battery size.
Battery Recommendation
We recommend the best battery system for your needs, budget and existing solar setup.
Installation Day
Our Cardiff electricians install your battery system, typically in half a day to a full day.
Inverter Configuration
We configure your inverter and battery management system for optimal performance.
Smart Tariff Setup
We help you set up smart tariff charging (e.g. Octopus Agile) to charge your battery cheaply overnight.
Handover & Monitoring
We walk you through your new system and set up the monitoring app so you can track your savings.
Why Choose GL Solar Cardiff?
All Major Brands
Tesla Powerwall, GivEnergy, Solax, Solis — we install and support all leading battery brands.
Double Your Solar Savings
Battery storage can increase solar self-consumption from 30% to 70–80%.
Backup Power
Keep essential appliances running during power cuts with backup functionality.
MCS Certified
All installations are MCS certified for warranty and incentive eligibility.
“We had solar panels already but were exporting most of our energy. GL Solar fitted a GivEnergy battery and now we're using over 80% of what we generate. Our bills have dropped dramatically. The team were brilliant — professional, tidy and explained everything clearly.”
Frequently Asked Questions
Areas We Cover in Cardiff & South Wales
GL Solar provides Solar Battery Installation 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.