Battery Storage Installation
Store your solar energy for when you need it most — evenings, cloudy days, and power cuts.
Battery storage transforms your solar panel system from a daytime-only asset into a 24-hour energy solution. Without a battery, a typical solar home uses only 30-50% of the energy it generates — the rest is exported to the grid at a fraction of what you'd pay to buy it back. With battery storage, you capture that surplus energy and use it in the evening when your household demand peaks.
The technology has matured significantly in recent years. Modern lithium-ion battery systems offer 10-15 year warranties, 6,000+ charge cycles, and sophisticated management software that optimises charging and discharging automatically. Many systems also provide backup power during grid outages — increasingly valuable as extreme weather events become more frequent.
For Wiltshire homeowners with existing solar panels, adding a battery typically increases self-consumption to 80-90%, dramatically reducing your reliance on grid electricity. For those installing solar and battery together, the combined system qualifies for 0% VAT, and the integrated design ensures optimal performance from day one.
Smart Export Guarantee (SEG)
Export excess energy to the grid and earn 15p-20p/kWh from your energy supplier. Battery storage maximises your earnings by letting you export at peak-rate times.
Solar Savings Estimator
Estimate your annual savings and payback period
Add battery storage?
Increases self-consumption & savings
Estimates based on Wiltshire average solar irradiance (980 kWh/kWp/yr), current electricity rates, and SEG export income. Your actual results will vary. Get a free survey for exact figures.
Save Your Estimate
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Annual saving
£862
Payback period
7.9 yrs
System size
4 kW
25-year saving
£21,550
Why Add Battery Storage?
Use More of Your Solar
Increase self-consumption from a typical 30-50% to 80-90% by storing daytime generation for evening use.
Protection From Price Rises
Lock in your energy costs by relying on stored solar power rather than increasingly expensive grid electricity.
Power Cut Protection
Many battery systems provide backup power during grid outages — keeping your lights on when others go dark.
Time-of-Use Tariff Optimisation
Charge from the grid at cheap overnight rates and discharge during expensive peak hours for maximum savings.
0% VAT When Installed With Solar
Battery storage installed alongside solar panels qualifies for the same 0% VAT rate.
Future-Proof Your Home
Battery storage prepares your home for smart grid participation, EV integration, and time-of-use energy markets.
Approved Battery Brands
We install and recommend only proven, MCS-approved battery systems with manufacturer-backed warranties.
Installation Process
Battery storage installations typically take one day and cause minimal disruption to your home.
Energy Assessment
We analyse your energy usage patterns, existing solar generation (if applicable), and identify the ideal battery capacity for your needs.
System Specification
We recommend the right battery technology, capacity, and configuration — whether a new combined system or retrofit to existing solar.
Clean Installation
Battery systems are typically installed in a garage, utility room, or external wall-mounted enclosure. Most installations complete in one day.
Commissioning & Monitoring
We configure your battery management system, set up monitoring, and ensure everything works seamlessly with your solar panels.
Battery Storage FAQs
Battery storage is worth it if you use most of your electricity in the evening (when solar panels are not generating) or if you want protection from power cuts. A battery typically increases self-consumption from 30-50% to 80-90%, making more of your solar investment pay for itself.
Modern lithium-ion batteries typically last 10-15 years, with most manufacturers offering 10-year warranties guaranteeing at least 70% capacity retention after 6,000+ charge cycles. Battery technology is improving rapidly.
Yes. Lumos Energy regularly retrofits battery storage to existing solar panel systems. We assess your current setup, recommend a compatible battery, and install it alongside your existing inverter or with a new hybrid inverter if needed.
Many modern battery systems offer backup power functionality, but not all. If power cut protection is important to you, we ensure your system specification includes this capability. Some systems switch to backup within milliseconds.
Most homes benefit from a battery capacity of 5-10 kWh. The right size depends on your evening and overnight electricity usage, your solar panel output, and whether you want full overnight coverage or partial backup. We size every battery to your specific usage profile.
Battery Storage Installation Areas
We install battery storage across Wiltshire, Somerset, and surrounding counties.
Ready to Store Your Solar Energy?
Get a free battery storage survey -- we'll design the right system for your home and existing panels.
Free survey · No obligation · Broughton Gifford, Melksham · Open Mon–Fri 8am–6pm, Sat 9am–2pm