GL Solar is Cardiff's leading independent home battery storage specialist, installing systems across every corner of the city. From the Victorian terraces of Roath and Cathays to the modern detached homes in Cyncoed and Pontprennau, we have fitted batteries in every property type Cardiff has to offer. Our local Cardiff team knows the city's housing stock inside out — ensuring every battery installation is perfectly matched to the home's energy usage, solar generation and available space.

Without battery storage, most Cardiff solar homes only use around 30% of the energy they generate — exporting the rest to the grid at a low rate, then buying it back in the evening at a much higher price. A home battery reverses this entirely, storing your excess daytime solar power and releasing it when you need it most. For Cardiff homeowners, a well-sized battery can increase solar self-consumption from 30% to 70–80%, adding £300–£500 per year to your energy savings.

We are not tied to any single brand — we supply and install Tesla Powerwall, GivEnergy, Solax, Solis, Fox ESS, Pylontech, Growatt and more. Whether you want a compact 5kWh system for a smaller Cardiff property or a 20kWh whole-home solution with backup power capability, we will find the right battery for your specific needs. Free battery assessments within 48 hours across all Cardiff postcodes.