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Solar Stash
Batteries for existing solar, Leeds and West Yorkshire

Add a battery to your existing solar panels in Leeds and West Yorkshire

Stop selling your daytime power cheap and buying it back at the full rate every evening. A battery keeps what your roof makes for when you are home, fitted by a local MCS-certified installer.

  • Exported solar earns about 8p a unit; the same unit costs 26.32p to buy back
  • 0% VAT on a battery added to existing solar until 31 March 2027
  • Free home survey by a local MCS-certified installer, fixed quote, no obligation

Figures as of 3 November 2026. Covering every LS, WF, BD, HD and HX postcode.

Where is the property?

We cover Leeds and West Yorkshire. Your postcode tells us straight away.

Next: your name and number. We never sell your details.

The maths

What leaves the house without a battery

A 3.5 kW system in West Yorkshire exports around 1,500 kWh a year when nobody is home in the day. Here is what that electricity is worth sold, and what it is worth kept.

Exported at 8p
£120
1,500 kWh x 8p. What a typical Smart Export Guarantee tariff pays you for a year of surplus.
Used at home at 26.32p
£395
1,500 kWh x 26.32p. What those same units cost to buy back on the current price cap.

About £275 a year kept instead of sold, before any overnight charging on a cheaper tariff.

As of 3 November 2026. Unit rate is the Ofgem price cap for 1 October to 31 December 2026, direct debit, GB average. Export at the 8p the calculator assumes; tariffs vary. Your own export is confirmed from your bills at the survey.

January price cap

The gap is forecast to widen in January

The current cap, 1 October to 31 December 2026, puts a typical dual-fuel bill at £1,723 a year and electricity at 26.32p a unit. Ofgem announces the January to March 2027 cap on 25 November 2026.

Cornwall Insight forecasts about £1,999 for that period (forecast updated 14 October 2026). That is a forecast, not a figure, and it will be replaced here the day Ofgem publishes. What does not change is the direction: every penny the unit rate rises makes each exported unit a worse deal and each stored unit a better one.

Now
£1,723 typical bill, 26.32p a unit (1 October to 31 December 2026)
Forecast
About £1,999 for January to March 2027, Cornwall Insight
Confirmed on
25 November 2026, by Ofgem
Export rate
Typically 8p a unit, and it does not rise with the cap

As of 3 November 2026.

The free survey

What the installer checks before quoting

Batteries bolt on to most existing systems, but the right route depends on what is already on the wall. Half an hour at your home settles it, and the quote that follows is fixed.

A battery added to existing solar is zero-rated for VAT until 31 March 2027, then 5%. Why the invoice date matters.

Your inverter
Make, age and whether it is a string or hybrid unit. This decides between an AC-coupled battery and a hybrid replacement.
Where it goes
Garage, utility room or an outside wall. A 5 kWh unit is roughly the size of a large suitcase.
Consumer unit
Spare ways, the earthing arrangement and whether the main fuse is big enough.
Your paperwork
Whether the existing system has an MCS certificate and which export tariff you are on, so nothing you already get is disturbed.
How you use power
Bills and, where available, your generation history, to size the battery to your evenings rather than guess.
Straight answers

Batteries for existing solar, answered

Thinking about new panels as well? Solar panels and a battery together. Or see your town: Leeds, Wakefield, Bradford, Huddersfield, Halifax.

Can a battery be added to solar panels I already have?
Yes, on almost every system. An AC-coupled battery sits alongside your existing inverter and works with any panels, whoever fitted them. If your inverter is near the end of its life, a hybrid inverter that replaces it and runs the battery can be the better route. The survey tells you which.
How much does a battery for existing solar cost?
It depends on the size, the inverter route and your consumer unit, so the price is fixed in writing after a free survey rather than guessed. A battery added to existing solar is zero-rated for VAT until 31 March 2027, with or without new panels.
How much will a battery save me?
A 3.5 kW system exporting about 1,500 kWh a year earns roughly £120 at 8p. Using that electricity at home instead of buying it at 26.32p is worth about £395, so the battery keeps around £275 a year that is currently leaving the house. More if you charge it overnight on a cheap tariff as well.
Will I lose my Feed-in Tariff or export payments?
No. Adding a battery does not affect a Feed-in Tariff, which is paid on what the panels generate. If you are on the Smart Export Guarantee you will export less because you are using more, which is the point: a unit used at home is worth about three times a unit exported.
What size battery do I need?
Most homes start at 5 kWh, enough to carry an evening of lights, cooking, TV and the router. An EV, a heat pump or a large family usually justifies 10 kWh or more. The survey reads your bills and your generation history and sizes it to your evenings, not to the biggest unit on the van.
Who fits it?
A local MCS-certified installer we work with in West Yorkshire. Your quote names the company and its MCS number, and the battery is installed to the current standard with its manufacturer warranty registered in your name.
Free survey, no obligation

Keep what your roof makes

Your postcode and a phone number. We call back within one working day to check your system and book the survey.

Or call us

07442 511817

Where is the property?

We cover Leeds and West Yorkshire. Your postcode tells us straight away.

Next: your name and number. We never sell your details.

Call now