Can I add a battery to an existing solar system?

Almost always yes — we fit batteries to systems we didn't originally install regularly. We'll check your inverter type first (some need a separate battery inverter, some have integrated battery ports) and quote either an AC-coupled or DC-coupled retrofit.

What size battery do I need?

For most homes a 5–10 kWh battery covers the gap between solar generation and evening usage. EV households and bigger homes often go to 10–15 kWh. We size it against your actual consumption profile, not a one-size-fits-all default.

How long does a home battery last?

Modern lithium iron phosphate (LFP) batteries are typically warrantied for 10 years and 6,000–10,000 cycles. After 10 years they'll usually still hold 70–80% of their capacity.

Can a battery power my home in a power cut?

Only if it's specifically wired for backup — many standard installs aren't, because backup-capable systems cost more and need additional gateway hardware. We'll talk you through the trade-off if it matters to you.

For your home

Battery storage — keep more of your own solar.

Without a battery, most homes only use about 30% of their own solar — the rest gets sold cheap and bought back expensive. A properly sized battery flips that to 70–80%, which is where the real savings live.

Get a quote See solar panels

Home battery storage installed by CJN Solar in a Yorkshire utility room

MCS Certified#NAP-81432 NAPIT Registered#81432 TrustMark Government Endorsed#4138631 HIES Member#CJN/A/1875

Why a battery makes solar make sense

The single biggest lever on solar payback.

Solar without a battery is half the story. The battery is what stops you giving away your generation at 5p/kWh and buying it back at 25p/kWh in the evening.

Self-consumption to 70–80%

From the typical 30% solar self-use to most of what you generate going into your own home instead of the grid.

Cheap-rate top-ups

Pair with a smart tariff like Octopus Go or Cosy and the battery fills off off-peak power for use at peak times.

AC or DC retrofit

We fit batteries to existing solar systems too — whatever your current inverter is, we'll find the right approach.

Tier-1 LFP cells

We specify lithium iron phosphate batteries — safer chemistry, longer cycle life, easier to live with than older lithium-ion options.

Smart EV integration

Battery + solar + EV charger working together: car charges off your stored solar overnight, on a time-of-use tariff.

Real warranty cover

10-year warranty on cells from the manufacturers we use, and we register every install for you.

Common questions

Battery storage — frequently asked

Almost always yes — we fit batteries to systems we didn't originally install regularly. We'll check your inverter type first (some need a separate battery inverter, some have integrated battery ports) and quote either an AC-coupled or DC-coupled retrofit.
For most homes a 5–10 kWh battery covers the gap between solar generation and evening usage. EV households and bigger homes often go to 10–15 kWh. We size it against your actual consumption profile, not a one-size-fits-all default.
Modern lithium iron phosphate (LFP) batteries are typically warrantied for 10 years and 6,000–10,000 cycles. After 10 years they'll usually still hold 70–80% of their capacity.
Only if it's specifically wired for backup — many standard installs aren't, because backup-capable systems cost more and need additional gateway hardware. We'll talk you through the trade-off if it matters to you.

Local service

Battery storage in your area

We're based in Leeds and cover the whole of Yorkshire from there. Click your nearest town below for a local-specific guide.

See all 33 areas across Yorkshire →

Ready for a friendly chat about solar?

No hard sell, no pressure. We'll talk through your roof, your bills and your options, then send a clear written quote.

Get a free quote Call 0113 460 1084