Battery Storage

Buy cheap. Store it. Use it when it counts.

Home batteries that store your solar surplus and off-peak grid electricity, then power your home through the expensive hours.

0%

of solar generation kept on site

7-9 years typical payback
Package deals — save more together0% APR finance availableFinance calculator

The numbers

Based on a typical average three-bedroom home. Watch the difference battery storage makes to what you pay each year.

  • 1Usage analysis from your half-hourly smart meter data
  • 2Capacity and tariff modelling
  • 3Single-day installation and DNO notification
  • 4App setup and charge schedule tuning

Annual grid import cost — average 3-bed home

Today£0
With Cool Renewables£0
£0saved every year

Smart tariff charging

Automatically charges at 7p off-peak rates and discharges when units cost 30p.

Backup power

Optional EPS keeps essential circuits running through a power cut.

Modular capacity

Start at 5kWh and stack more later as your usage grows.

Quick facts

Installed from
Fixed quote after survey

Free survey, no call-out charge.

Typical time on site
1 day on site (same day as solar if combined)

Our own engineers — we do not subcontract.

Payback / value
7-9 years typical payback

Based on an average three-bedroom home.

Finance
0% APR over 12 months

Or 10.9% APR fixed over 36-120 months, subject to status.

Installed by our own team from 337 Long Lane, Bexleyheath DA7 5JQ, covering Bexley, Welling, Sidcup, Dartford, Erith and the surrounding parts of Kent and South East London. MCS certified. More answers in our FAQs.

Common questions

Can I add a battery to existing solar?

Yes — AC-coupled batteries retrofit to almost any existing solar array.

How long do batteries last?

Typically 6,000+ cycles, backed by a 10-year warranty at 70% retained capacity.

See all frequently asked questions

Ready to talk Battery Storage?

Send us a few details and we'll come back with a tailored savings estimate within one working day.

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Pairs well with