The UK can’t reach 100% renewables. Yet.
Every year the UK wastes around 10 TWh of renewable power, enough to run 3.7 million homes all year, because there’s nowhere to put it.
But despite this surplus, when the sun isn’t shining and the wind isn’t blowing we still have to turn to fossil fuels to make up the gap.
Britain doesn’t have an energy problem. It has a storage problem.
Kilowatt Club fixes it street by street:
- Member-owned home batteries, coordinated by software.
- Twenty million UK homes have a garage or a suitable outside wall.
- Together they’d be Britain’s largest power station, on wires that already exist.
How it works
Charge cheap. Power the peak.
On half-hourly pricing, electricity is cheap overnight and expensive every evening. The brain, a Raspberry Pi wired to your inverter, plans every half hour against tomorrow’s prices: charge when power is cheap and green, run the house through the breakfast and dinner peaks.
You simply stop buying expensive electricity. Nothing to remember, nothing to press. Full methodology →
The kit
One standard kit. Certified. Yours.
Bought in your name at trade prices, installed by a qualified electrician, configured by us. Cheaper than solar panels, far cheaper than a heat pump, and fitted in a day or two.
5.76 kWh certified LFP, 6,000+ cycles, 10-year warranty, built-in heater for cold garages.
£1,344UK grid-certified hybrid.
£815Runs the software to optimise your battery.
Free for foundersIsolators, breakers, cabling, consumer-unit work.
£315Qualified electrician, typically one to two days including sign-off.
£1,100DNO notification. No application wait, no queue.
£100First 25 homes get £1,000 from the club to help them get started
~£2,7005.76 kWh certified LFP, 6,000+ cycles, 10-year warranty. Sized up if you use more.
£1,344UK grid-certified hybrid - reused if yours is already compatible.
£815 if neededRuns your solar, battery and the grid as one system.
Free for foundersIsolators, breakers, cabling, consumer-unit work.
£315Qualified electrician, fitted alongside your existing panels.
£1,100DNO notification. No application wait, no queue.
£100Lower end if your inverter can be reused.
~£2,900–3,700First 25 homes get £1,000 from the club to help them get started
~£1,900–2,700Our optimiser, running on your existing battery - plans every half-hour against real prices.
Free for foundersFoxESS and Solis supported today. Anything else, just ask.
FreeWe move you onto Octopus half-hourly pricing - the real friction point, done.
FreeNo new hardware if your kit’s compatible.
~£0The optimiser finds each day’s cheapest half-hours and never charges at the peak - a fixed timer can’t. Estimated.
~£100/yrThe founding grant: the first 25 homes get £1,000 off and the brain free. In return the club coordinates your battery in grid-services markets. The grant vests over your first five years, unwinds pro-rata if you leave early, and transfers with the house if you move. Want a bigger battery, or already own one? Just ask. To join you’ll need to own a house and be happy on an Octopus half-hourly tariff.
Our model
No membership fees. Ever.
We’re paid by the grid, not by our members. The whole model, plainly:
The optimiser cuts a typical bill by ~39%. No subscription, no cut, no catch.
A few times a month, coordinated fleets are paid to support the grid. That’s our business model.
£1,000 off on day one, vesting over five years while the club coordinates your battery.
Battery, inverter and brain, all in your name. The kit keeps working without us.
Mission first. A renewable Britain needs home storage faster than any one company will deliver. If you don’t join us, get a battery anyway: Intelligent Octopus Flux, Axle Energy, GivEnergy and Sunsave all do good work.