Solar battery storage lets you store the electricity your panels generate during the day and use it in the evening — instead of exporting it to the grid for a fraction of what you’d pay to buy it back later. A. Lloyd Electrical & Solar Limited installs Duracell Dura5 battery storage systems across Swansea and South Wales, helping homes and businesses move closer to full independence from grid power.
Why Add Battery Storage to Your Solar PV System?
Without a battery, any solar electricity you don’t use immediately is exported back to the grid — often at a lower rate than you pay to import electricity. Adding battery storage means higher self-consumption, lower electricity bills, backup resilience for key circuits during a grid outage (system dependent), and smart tariff compatibility — pairing with time-of-use tariffs like Octopus Energy’s Intelligent Octopus tariff to charge your battery from the grid at the cheapest overnight rate when solar generation is low.
Featured System: Duracell Dura5 5.12kWh Battery Storage
We install the Duracell Dura5, a 51.2V LiFePO4 (lithium iron phosphate) battery system chosen for its safety profile and performance: 5.12kWh module energy (4.6kWh usable), 10-year manufacturer warranty, modular and stackable up to 32 units in parallel, plug-and-play installation with automatic module-level balancing, and wall-mount or floor-stack options to suit your available space.
What’s Included in Your Battery Storage Installation
A free, no-obligation survey of your existing or planned solar PV system and daily usage; a battery sizing recommendation based on your household or business energy profile; full installation and commissioning by our own MCS-accredited team with no subcontractors; MCS certification required for Smart Export Guarantee eligibility; and a compatibility check if you’re retrofitting a battery to an existing solar PV system, whether we installed it or not.
Battery Storage and Off-Grid Independence
For customers looking to reduce grid reliance even further, battery storage is also the foundation of a fully off-grid system. If your goal is complete independence from the National Grid, visit our Off-Grid Solar Systems page to find out more.
Why Choose A. Lloyd Electrical & Solar for Battery Storage
MCS registered (NIC1759), NICEIC approved and RECC member
32+ years’ electrical contracting experience, 15+ years installing solar and battery systems
Family-run, no subcontractors — the team that surveys your property installs your system
Serving Swansea, Sketty, Gower and wider South Wales
Your Solar PV system is generating more electricity than you are using because you are not at home.
The surplus energy is flowing into the Grid, at best you will be getting a small payment per kWh under a Smart Export Guarantee (SEG) or Feed in Tariff (FIT).
Once your battery storage system is installed you will harvest any excess solar energy up to the point your battery is fully charged.
The Batteries are used to store DC power, they are totally compatible.
When the monitoring unit detects that there is no longer sufficient power being produced by the Solar Panels it calls on the batteries. This can be when its getting dark or when the demand load is more than the solar panels are producing.
The batteries re-inject the stored DC power within 0.2 of a second – back through the inverter and you are up and running again using your own stored electricity instead of buying any.
The system is designed to prevent as much electricity being purchased as possible and it is a simple concept and extremely effective.
The system we use is modular in design which means you can start with a small battery (typically 5 kW) and add more modules (Batteries) if your demand for energy storage increases. You may add an electric or hybrid vehicle in the future so it is reassuring that it is a very simple process to add more modules.
The battery storage system is fully integrated with the APP so that you can monitor what the charging situation is at home from your phone, tablet or computer. We set this up for you and provide a ‘real time’ demonstration as part of the commissioning process.
Every customer enjoys this part of the installation because they actually see their system doing what we have promised it will.
Battery Storage FAQs
What battery storage system do you install?
We install Duracell Dura5 5.12kWh LiFePO4 battery systems, which are stackable up to 32 units, come with a 10-year warranty, and can be wall-mounted or stacked to suit your property.
What warranty comes with the Duracell battery storage system?
The Duracell Dura5 battery carries a 10-year manufacturer warranty, supported in the UK by Puredrive Energy Limited.
Can battery storage make me independent from the grid?
Battery storage stores solar energy generated during the day for use in the evening, significantly reducing grid reliance. For full independence, ask us about our off-grid systems.
Can I add a battery to my existing solar panels?
In most cases, yes. We can assess your existing solar PV system and recommend a compatible battery storage solution to maximise your self-consumption and savings.
Are your battery storage installations MCS certified?
Yes, all battery storage installations are carried out to MCS standards by our accredited team, which is required for Smart Export Guarantee eligibility.
