Battery Storage
Use your own power, day and night.
Solar only generates when the sun is up — but your home uses most of its electricity in the evening. A battery closes that gap. We design and install home battery systems that charge from solar, discharge when you need them, and can even top up from cheap overnight tariffs like Octopus Go.
Why it’s worth it
What you get
Self-consumption up to 80%
Without a battery, you typically use 30–40% of the solar you generate. With one, that jumps to 70–80%.
Cheap-rate charging
Pair with an Octopus Go or similar tariff — charge the battery at ~7p/kWh overnight, use that power during peak rate hours.
Power-cut backup
Specified with a backup-capable inverter, your essentials stay on when the street goes dark. We design the backup circuits around your home at quote stage.
Sized around your home
Typical home systems run from around 5 kWh up to 20+ kWh. Start with what your household actually uses, add capacity later as your needs grow.
The process
How we work
- 01
Energy audit
We look at your half-hourly consumption data and solar generation (if fitted). This tells us the right battery size — too small and you waste solar, too big and you're paying for capacity you'll never use.
- 02
Design & quote
Battery capacity, inverter (if needed), location, cabling route. All written up with projected annual savings and a breakdown of the kit.
- 03
Install & commission
Typically 1 day. We mount the battery, wire into your consumer unit, commission the system and walk you through the monitoring app.
- 04
Monitor & optimise
Free 30-day check-in. We tune the charge/discharge schedule to your tariff and consumption pattern.
FAQ
Frequently asked
Do I need solar to have a battery?
No. A standalone battery paired with a cheap-rate overnight tariff (like Octopus Go or Intelligent Octopus) still saves money by shifting consumption to off-peak hours. Most of our recent installs are battery-only on Go tariffs.
How long do batteries last?
Most home batteries we install carry a 10–12 year manufacturer warranty on a minimum capacity retention (typically 60–70%). In practice most will outlast that comfortably.
Where does it get installed?
Garage, utility room, loft, external wall — anywhere dry and within cable reach of your consumer unit. Units are roughly the size of a small fridge.
Will it power my whole house in a power cut?
If fitted with a backup-capable inverter, yes — but typically on selected essential circuits rather than the whole property. We design the backup circuits with you at quote stage.
Next step
Ready to talk battery storage?
Free site survey. Fixed-price quote. No pressure, no jargon — just a clear plan for what we'd do and what it'd cost.