For far too long solar and storage systems are only accessible if you have >£8k to spare and a roof you own.
So we built Jules.
It’s a 2.5 kWh battery that plugs into a normal 3-pin socket. No electrician, no scaffolding, no hardwiring.
Add up to four 500W panels on a balcony, wall or in the garden. No space for panels? It also works battery-only. It runs itself: charges when electricity is cheap, discharges when it’s expensive, forecasts your solar production and your usage from your smart meter. Up to £330 a year off your bill. £799 outright. £199 if you fix with Fuse for 5 years. Panels £189 each. 10-year warranty. Reservations are open today, launch estimated 2027. Fuse customers get priority.
fuseenergy.com/jules-by-fuse
So we built Jules.
It’s a 2.5 kWh battery that plugs into a normal 3-pin socket. No electrician, no scaffolding, no hardwiring.
Add up to four 500W panels on a balcony, wall or in the garden. No space for panels? It also works battery-only. It runs itself: charges when electricity is cheap, discharges when it’s expensive, forecasts your solar production and your usage from your smart meter. Up to £330 a year off your bill. £799 outright. £199 if you fix with Fuse for 5 years. Panels £189 each. 10-year warranty. Reservations are open today, launch estimated 2027. Fuse customers get priority.
fuseenergy.com/jules-by-fuse
Meet Jules by Fuse Energy.
An intelligent energy system for your home. Plug in and autopilot does the rest.
It learns your habits, stores power, trades the excess and continuously lowers your bills.
Solar and storage is now for everyone.
Energy intelligently designed for r off your bills.
Reservations now open
Oct 19, 2026 · 9:58 AM UTC
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@alanchanguk Is there something like this for the US?
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@alanchanguk I like the "click a question and load up an AI help chat" design, but why is the first click running a whole-ass LLM query instead of having an instant answer? Fine to put it in an AI window for onward chat but multi-second response times on a pre-loaded question is poor UX
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@alanchanguk Except it looks like plug in batteries won’t be legalised until at least mid 2028 as the safety study doesn’t under until March 2028 currently: inews.co.uk/news/400-lidl-….
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@wrayste We are working very closely with UK gov to legalise it!
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@alanchanguk Most London houses are flats/apartments. Will we be able to use this in a flat?
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@alanchanguk Looks clean, I've 'reserved', quite glad I switched to Fuse! Could the battery be hooked up roof solar panels in future rather than just the smaller ones?
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@joseph_longden We are working on big Jules that can do that!
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@alanchanguk May I please ask is this fully compliant with current uk legislation? My understanding was that they/gov only approved panels for flats not storage? Thank u!
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@RadekBasia Working with the UK gov to change the legalisation!
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@alanchanguk Jules is awesome. Right now less than 1% of homes in the world have a battery. Give it five years and not having one will feel like not having wifi
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@alanchanguk Are we limited to just one unit + 4 panels per house/consumer unit? Can I stack a bunch of them?
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