Is plug-in solar legal in the UK?
Yes — in England, Scotland and Wales, from 27 August 2026. But "legal" comes with conditions attached, and the short answer hides most of what a buyer needs to know.
The short answer
From 27 August 2026, a householder in Great Britain may connect a plug-in solar device to a domestic socket without an electrician, provided two things are true: the exact product is listed as Compliant on the ENA Connect Direct register, and the household registers the connection with the local distribution network operator after it is installed. Miss either and the installation is not within the rules, however good the hardware is.
What changed, and why
Small generators have always needed to fit within the industry connection arrangements — the engineering recommendations that keep equipment on the distribution network predictable and safe. Historically these assumed an installer, a fixed wiring connection and a notification process handled by a professional. That framing left no practical route for a consumer product with a plug on the end, even though comparable devices had been common in parts of Europe for years.
The reform created a defined category: very low output, battery-free, one per household, connected directly to a socket, built to a published specification and recorded on a central register. The policy goal was to let households make a modest, low-cost cut to their bills without the cost and disruption of a rooftop installation, while keeping the network operator's picture of connected generation accurate.
What "legal" actually requires
1. A compliant product
The device must meet the technical specification for plug-in solar equipment, including the 800VA AC output cap, the 3.5A current limit and inverter protection settings under IPS v2.0. Manufacturers demonstrate this and the model is then listed as Compliant on the ENA Connect Direct register. Check the register for the specific make and model before you buy — packaging claims are not a substitute.
2. A compliant installation
The device plugs directly into a socket outlet. No extension leads, no adaptors, no multi-way blocks, no daisy-chaining a second device. Panels must be mounted securely on a surface that can carry them in wind, and cabling must be routed so it cannot be damaged or trip anyone.
3. Registration after installation
The householder registers the device once it is installed. This is a short, free online step, covered in our registration guide.
What is still not allowed
- Batteries. Plug-in solar devices must be battery-free. Adding storage takes the installation outside the category entirely.
- Extension leads. Connection must be direct to a socket outlet.
- More than one device per household. The one-per-household rule under G98 is not a guideline; a second device is an unregistered connection.
- Exceeding the output limits. 800VA AC, 3.5A, and no more than 2,000Wp of DC panels. Above 960Wp of panels, a professional electrical assessment is advised.
- Unlisted products. If the model is not on the register as Compliant, it is not a legal plug-in solar device in Great Britain.
The full set of limits, and what each one means when you are choosing a kit, is set out in plug-in solar rules and limits explained.
Renters, leaseholders and permissions
Being legal under the connection rules is not the same as being permitted where you live. A tenancy agreement may restrict fixing anything to a building. A leasehold flat will usually have terms covering the balcony and the external facade, and the freeholder or managing agent may have a view on anything visible from outside. Listed buildings and conservation areas bring their own considerations for anything mounted on a frontage. Check first; a ground-mounted frame in a garden avoids most of these questions.
Northern Ireland
The change applies to Great Britain — England, Scotland and Wales. It does not currently extend to Northern Ireland, which has its own distribution network arrangements. We set out the position, and what would need to change, on the Northern Ireland status page.
One safety point worth repeating
A plug-in solar device does not work in a power cut. When the grid supply is lost the inverter disconnects, so that no electricity is fed onto a network that engineers may be working on. If you want backup power during an outage, plug-in solar is not the product for that.
Frequently asked questions
- When did plug-in solar become legal in the UK?
- 27 August 2026, in England, Scotland and Wales. Northern Ireland is not covered by the Great Britain regime.
- Do I need permission from my network operator?
- You do not need permission in advance for a compliant device, but you must register the connection with your distribution network operator after installation.
- Is it legal to plug a solar device into an extension lead?
- No. The device must be connected directly to a socket outlet. Extension leads, adaptors and multi-way blocks are not permitted.
- Can I install two plug-in solar devices?
- No. Only one plug-in solar device per household is allowed under the G98 connection arrangements.
Related guides
- Plug-in solar rules and limits explained
800VA, 3.5A, 2,000Wp, G98 and the one-per-household rule in plain English.
- How to register a plug-in solar device
Who registers, when, and how to check a product on ENA Connect Direct.
- How much do plug-in solar panels save?
Government modelling, self-consumption and a realistic payback period.
- How much does plug-in solar cost in the UK?
Observed market pricing, what drives it and what should be in the box.
- Solar panels for a garden room
What a garden room actually draws, and how a plug-in kit covers part of it.
- Solar power for a garden office
The best-matched use case: you work in the hours the panels generate.
Be first to know when we launch.
Solar in a Box is in development. Join the waitlist and we'll email you when pricing, specifications and availability are confirmed.