Home and commercial battery storage, sized from your real usage and fitted to new or existing solar systems.
Battery Storage
Battery Storage and Retrofit Systems
- ✓ Retrofit to existing solar systems
- ✓ Sized from your actual usage data
- ✓ Lithium and sodium options
Battery storage for homes and businesses
A battery lets you use electricity when it suits you rather than when it happens to be generated or cheap. Solarcore Energy Ltd installs storage alongside new solar systems and as a retrofit to arrays installed by somebody else, including systems we did not supply.
Sizing is where most of the value sits. Too small and you fill it by lunchtime, too large and you pay for capacity that never cycles. We size yours from your actual half-hourly usage, not a rule of thumb.
Batteries we install
We are approved installers for Tesla Powerwall, GivEnergy, FoxESS, Solis, SunSynk, Solax, SolarEdge and Eleven Energy. We are also Trusted Installer Partners for the Eleven sodium battery, an alternative to lithium with strong safety and recyclability credentials.
Call 07375 791841 and we will size a battery properly for your usage.
At a glance
- Retrofit to existing solar
- Lithium and sodium options
- Sized from your usage data
- Backup circuits available
- Usually one day on site
- Monitoring set up with you
How storage fits your property
Four ways a battery earns its place, depending on how your property runs.
Use generation after dark
Store surplus instead of exporting it and buying it back at full price.
Charge cheaply overnight
Fill the battery on a low overnight rate, even without solar panels.
Power through a cut
Backup circuits keep essentials running when the grid goes down.
Shave business peaks
Commercial sites cut peak demand charges and ride out interruptions.
Retrofitting to an existing array
Adding storage to a system someone else installed is routine work for us. Depending on your inverter we either add a battery with its own hybrid inverter or use an AC-coupled unit, which avoids disturbing the original installation. We confirm which applies at survey, before you order anything.
AC-coupled retrofit
Works alongside your existing inverter with minimal disruption.
Hybrid replacement
A single unit handling both generation and storage where it suits better.
Tariff configuration
Charge and discharge set around your tariff so the savings are real.
Find out what size battery you actually need
Send us your usage and we will size it honestly, including telling you if it is not worth it.
Installing your battery
Most battery installations take a day. The planning beforehand matters more than the time on site. Each stage is explained on our process page.
Where it goes
Batteries need ventilation, a sensible temperature range and access. We agree the position at survey.
Electrical work
Correct protection, isolation and earthing, with any consumer unit work flagged before you order.
Commissioning
We configure charge and discharge to your tariff, test it and set up monitoring with you.
Battery storage questions
The questions below come up on almost every battery enquiry.
What size battery do I need?
Most homes land between 5kWh and 15kWh. The right figure depends on your evening consumption and tariff, which is why we ask for usage data rather than guessing.
How long do batteries last?
Manufacturer warranties typically cover ten years or a stated number of cycles, with usable capacity reducing gradually rather than failing suddenly.
Can I have one without solar panels?
Yes. Charging overnight on a cheap rate and discharging during expensive hours works on its own, though savings are usually larger alongside generation.
Will it power my whole property in a cut?
Only if specified that way, and whole-property backup is expensive. Most people protect selected essential circuits instead.
Is sodium better than lithium?
It depends on priorities. Sodium performs well on safety and recyclability, lithium on energy density in tight spaces.
Can you work on a system another installer fitted?
Yes. Retrofits to arrays we did not install are a routine part of what we do.
Not sure where to start? Call 07375 791841 and we will talk it through.