Home Battery Storage Systems in Cardiff
Store your solar energy and use it on your terms. Cut your bills further, gain energy independence and protect against power cuts with battery storage from GL Solar.
A home battery storage system is the perfect complement to solar panels — and one of the smartest energy investments a Cardiff homeowner can make in 2025. Without a battery, surplus solar energy generated during the day is exported to the grid for just a few pence per unit. With a battery, that energy is stored and used in the evening when your panels aren't generating, dramatically increasing your self-consumption and annual savings.
GL Solar installs all leading home battery brands across Cardiff and South Wales, including Tesla Powerwall, GivEnergy, SolarEdge and Growatt. We're manufacturer-approved for Tesla Powerwall installation — one of only a handful of certified installers in South Wales. Our team will assess your energy usage, solar generation profile and budget to recommend the right battery size and brand for your Cardiff home.
Battery storage also provides protection against power cuts. Systems like the Tesla Powerwall include automatic backup functionality that switches your home to battery power within milliseconds of a grid outage — keeping your lights, fridge and essential appliances running. For Cardiff homeowners who work from home, this peace of mind is invaluable.
Cardiff's energy landscape is changing fast. With electricity prices remaining high and smart tariffs like Octopus Agile and Octopus Go offering cheap overnight rates, a home battery lets you charge from the grid at 7–10p/kWh and use that stored energy during peak periods at 25–35p/kWh. Combined with solar generation, Cardiff homeowners with a battery are routinely cutting their electricity bills by 80–90% compared to a home with no solar or storage.
Our Battery Storage Services
Expert installations across Cardiff and South Wales by fully qualified, MCS certified electricians.
Solar Battery Installation Cardiff
Store your solar energy and use it when you need it most — evenings, cloudy days and peak tariff times. We install all leading battery brands across Cardiff and South Wales.
Home Battery Storage Systems
Whole-home battery solutions for true energy independence. Never waste a unit of solar energy again — store it and use it on your terms, day or night.
Tesla Powerwall Installation Cardiff
Authorised Tesla Powerwall installers in Cardiff. The world's leading home battery system, installed by manufacturer-certified experts with full warranty support and app setup.
GivEnergy Battery Systems
GivEnergy battery storage — a popular, reliable and great-value choice for Cardiff homeowners. Available in 5kWh, 9.5kWh and larger capacities with a 10-year warranty.
Retrofit Battery Storage Cardiff
Already have solar panels? We retrofit battery storage to most existing systems across Cardiff, regardless of who installed them. Maximise your existing solar investment.
Smart Energy Management
Smart monitoring apps and energy management systems so you always know exactly how your energy is being generated, stored and used — from your phone, anywhere.
Why Choose GL Solar?
Cardiff's trusted solar specialists — MCS certified, locally based, 5-star rated.
Store Solar Energy
Use your solar power at night and on cloudy Cardiff days instead of buying expensive grid electricity.
Double Your Savings
Battery storage can increase your annual solar savings by £300–£500 by dramatically reducing grid imports.
Power Cut Protection
Keep essential appliances running during power cuts with automatic backup power — no manual switching required.
Certified Installers
MCS certified and manufacturer-approved for Tesla Powerwall, GivEnergy, SolarEdge and more across Cardiff.
Battery Storage for Every Home Type
We install battery storage systems for every type of Cardiff home — from compact terraced houses to large detached properties. The right battery size and placement depends on your home, and we tailor every install.
Terraced Houses
Compact battery storage for Cardiff terraced homes in Roath, Cathays and Canton. Wall-mounted 5kWh units fit neatly in utility cupboards or small garages — perfect for maximising solar self-consumption on limited roof space.
Semi-Detached Homes
Mid-size battery systems for semi-detached properties in Whitchurch, Rhiwbina and Llanishen. 9.5kWh GivEnergy or Tesla Powerwall options suit the larger solar arrays typical of semi-detached roofs.
Detached Houses
Large-capacity battery storage for detached homes in Cyncoed, Lisvane and Pontprennau. Multiple batteries, whole-home backup gateways and integrated EV charging for the ultimate energy-independent setup.
Bungalows
Single-storey bungalow battery installs in Penylan, Heath and St Fagans. Ground-level garages and utility rooms make access easy. Bungalows with large solar arrays benefit massively from 10kWh+ battery capacity.
New-Build Homes
Battery-ready solar for new builds in Pontprennau, St Mellons and Llanedeyrn. We specify battery-compatible inverters and pre-wired battery locations during construction for seamless future upgrades.
Victorian & Edwardian Homes
Retrofit battery storage for period properties in Pontcanna, Llandaff and Canton. We retrofit batteries to existing solar systems with minimal electrical disruption, preserving your home's character while adding modern energy independence.
Period & Character Properties
Discreet battery placement for listed and conservation area homes in Roath and Llandaff. External wall-mounted units in outbuildings or garages keep the main property untouched while storing every unit of solar you generate.
Ex-Council & Social Housing
Affordable battery retrofits for ex-council and social housing across Cardiff. We work with housing associations and the Nest scheme to reduce energy bills for social housing tenants through low-cost battery + solar packages.
What Cardiff Customers Say
Real reviews from homeowners and businesses across Cardiff and South Wales.
“We had a 5kW solar system installed two years ago and recently added a GivEnergy 9.5kWh battery through GL Solar. The difference is incredible — we're now using over 80% of our own solar energy. Our electricity bill has dropped from £180/month to under £40. Brilliant service.”
“GL Solar installed a Tesla Powerwall alongside our existing solar panels. The installation was clean and professional, and the Powerwall app is brilliant. We've had two power cuts since and didn't even notice — the house just kept running. Couldn't recommend them more highly.”
“Excellent service. The team explained all the battery options clearly and helped us choose the right size for our usage. The GivEnergy system they installed has been faultless. Highly recommend GL Solar for battery storage in Cardiff.”
“We were sceptical about whether a battery would be worth the extra cost, but GL Solar showed us the numbers and it was a no-brainer. We're on Octopus Go and the battery charges overnight at 7p/kWh. Combined with our solar, we're barely touching the grid. Fantastic investment.”
“Had a GivEnergy 9.5kWh battery retrofitted to my existing 4kW solar system. GL Solar handled everything — the survey, installation and app setup. The whole job was done in a day. My self-consumption has gone from 35% to over 75%. Absolutely worth every penny.”
“We chose GL Solar for our Tesla Powerwall installation after getting three quotes. They were the most knowledgeable and their price was competitive. The installation was immaculate and the Powerwall has been running perfectly for 8 months. Very happy customers.”
Battery Storage Near Me — Areas We Cover
Searching for 'home battery storage near me', 'Tesla Powerwall installer Cardiff' or 'solar battery storage Cardiff'? GL Solar is one of South Wales' leading battery storage specialists. We cover all Cardiff postcodes — CF1 to CF24 and beyond — with free surveys available within 48 hours. From Whitchurch and Cyncoed to Penarth and Barry, our local Cardiff team is ready to help you store more solar and cut your bills further.
Why Choose a Local Cardiff Installer?
Frequently Asked Questions
Everything Cardiff homeowners ask us about battery storage.
Related Services
Explore our other solar services for Cardiff homes and businesses.
Maximise Your Solar Savings with Battery Storage
Find out how much more you could save by adding battery storage to your Cardiff home. Free survey and no-obligation quote — call us or get in touch online today.