Fuse Energy Shows Jules, a Plug-In Solar and Battery Kit You Cannot Yet Buy in Britain
Fuse Energy publicised Jules on 19 October, a plug-in kit that pairs up to four 500 W solar panels with a 2.5 kWh battery. It is a reservation, not a sale: Fuse expects first deliveries in 2027, after legislation, and plug-in batteries are not yet legal in the UK.
What Fuse announced
TechRadar reported on 19 October that Jules can be reserved by customers in Great Britain. The kit is aimed at renters, flat dwellers and homes with unsuitable roofs, and can sit on a balcony, wall or in a garden. The Fuse app decides when to store power and when to use it.
Fuse says first deliveries are expected after legislation is approved in 2027. Nothing can be bought or installed today.
Where the law stands
Plug-in solar panels of up to 800 W AC have been lawful in Great Britain since 27 August 2026 under SI 2026/848, but that does not extend to battery storage. Fuse's own guide, dated 30 July, says socket-connected plug-in batteries are 'not yet legal in the UK' and that its launch depends on the UK position. We covered the panel rules in our guide to plug-in solar now being legal, and the government's plans for a safety study of plug-in batteries.
Octopus's Nook Cube, a 2 kWh plug-in battery, is also due in 2027, so Fuse is not alone in waiting on the rules. See our report on the Nook range.
What we could not confirm
Fuse's cost and savings claims come from the company, and we could not verify them. We have not seen test results for Jules, and we could not find independent confirmation of how the kit would be certified or which standards a plug-in battery will have to meet.
If you want solar and storage today, an installed system is the legal route for batteries. Our plug-in batteries page explains how the category works and what we cover, and the home battery storage pages list installed options.
Sources
- TechRadar: Fuse Energy reveals UK's first plug-in solar and battery system combo
- Fuse Energy: Plug-in battery storage, a power play
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