92% of the batteries fitted in Britain this year went onto roofs that already had solar.
MCS recorded around 36,000 certified battery installations in the first half of 2026 — close to double the year before. Almost every one went to a household that already had panels.
If you've installed for three hundred homes, some of them are ready to buy again. Nobody has asked them.
Ring Us About Your ListSource: MCS, August 2026. How many solar homes already have a battery is disputed: roughly 20% on MCS records, with estimates of 50–70% once non-MCS retrofit work is counted.
The Offer
£200 per survey that happens.
Nothing else.
We work your old customer list and book battery surveys. You pay £200for each survey that's booked and actually happens. Nothing upfront, nothing monthly, nothing if it doesn't work.
The Follow-On
The list is never done.
Most installers run this once and think that's the list done. It isn't — you're adding customers every month, and the ones who said “not yet” last time are a year further into their bills. We can run it again every quarter.
Your Data
Your data never leaves your building.
We don't take a copy of your customer list. We set the sequence up inside your own system, it sends from your number and your email address, and you can read every message before it goes out. You stay in control of the data the whole way through. We'll sign a data processing agreement before we touch anything.
Why You're Allowed To Do This
They're your customers.
You sold them solar, you're offering them a battery — that's a similar product, so you can contact them, as long as every message gives them a way to opt out. We build that in.
How We Count a Survey
Three rules. All three, every time.
Only your agreed list
The contact has to be on the customer list we agreed with you before we started.
Only within 90 days
The survey has to be booked within 90 days of the campaign starting.
Only through the sequence
The booking has to come through the messages we set up — not a customer who rang you anyway.
Ring us. Tell us how big your list is.
Ten minutes on the phone and you'll know whether it's worth doing.
Battery figures from MCS.