Plug-in solar panels UK: legal since 27 August 2026. Here's what they can really do.
Plug in solar UK is now allowed in England, Scotland and Wales for compliant kits of up to 800 W. We explain the rules, the real costs and realistic savings, so you can decide whether it's worth it. [gov.uk]
Start here
Is it legal?
Allowed in England, Scotland and Wales since 27 August 2026, for compliant kits of up to 800 W.
Read the rules →Is it worth it?
Which? estimates payback of roughly 3.6-7.1 years, depending on the kit and your home.
See savings and payback →800W kits
800W is the legal maximum output from the inverter. The panels can total up to 2,000 W.
What the limit means →Sources: gov.uk; Which?; solar.org.uk
How does plug-in solar work?
A plug-in solar kit has one or two panels on a balcony, wall or garden frame, connected to a small inverter. The inverter plugs into a standard wall socket. While the sun shines, your home uses that power first, so you buy less from the grid. It's also called balcony solar.
Plug-in solar UK rules and regulations: is it legal?
Yes, since the plug in solar panels UK law change on 27 August 2026 (SI 2026/848), but only for compliant kits: [SI 2026/848; solar.org.uk]
- England, Scotland and Wales only (not Northern Ireland).
- 800W maximum output per kit.
- The kit must meet the government's Interim Product Specification and be listed on the ENA G98 Type Test Register.
- One kit per home for now, under the current network rule (G98).
- Register your kit with your network operator at myplugin.solar.
- Plug it straight into a wall socket. No extension leads or adaptors.
- Battery-integrated kits aren't covered.
- Not allowed on timber balconies, timber cladding, certain building claddings, or buildings undergoing wall remediation.
Is it right for you?
Likely yes if you have an unshaded spot facing roughly south, you use power during the day, and you own your home or have permission.
Renting or leasehold? You'll need your landlord's or freeholder's permission first. [solar.org.uk]
Check first if you live in a listed building or conservation area (planning), or have a timber balcony (not allowed). Tell your home insurer before you install.
Buy a plug-in solar kit or rent one?
Most people buy a plug in solar kit, and some retailers offer pay monthly. Because savings are modest, renting would only make sense at a very low monthly fee. We'll update this page if rental offers appear.
Costs and savings: are plug-in solar panels worth it in the UK?
Prices seen in October 2026:
- Octopus plug in solar price: £450 for one panel, £650 for two. [Octopus]
- Plug in solar panels Currys: £499 to £599. [plugsolarhq]
- Plug in solar panels Argos: £599 to £999. [plugsolarhq; The Eco Experts]
Savings: the government estimates up to £110 a year. Which? quotes £70 to £110 a year. Which? estimates payback of roughly 3.6-7.1 years, depending on the kit and your home. [gov.uk; Which?]
Worked example (estimate only): a £650 two-panel kit saving £70 to £110 a year would take roughly 6 to 9 years to pay back. Your result depends on direction, shade, your tariff and how much power you use in daylight.
Safety
- Buy only kits listed on the ENA register. We'll only list kits shown on the Energy Networks Association register.
- Use the manufacturer's own lead, plugged directly into a wall socket.
- Fix the kit securely, following the instructions.
Plug-in solar guides
- Is plug-in solar legal in the UK? Rules and regulations explained
- Are plug-in solar panels worth it in the UK?
- 800W plug-in solar kit: what the UK limit means
- Balcony solar panels UK: what's allowed
- Plug-in solar panels with battery: UK rules
- Where to buy plug-in solar panels in the UK: Argos, Currys and Octopus
- Plug-in solar export payments: will I get paid?
- Do you need planning permission for plug-in solar panels in the UK?
Popular questions
- Is plug in solar legal in the UK? (full guide)
- Are plug in solar panels worth it in the UK? (full guide)
- Are plug in solar panels any good? (full guide)
- Can I fit an 800W solar panel kit? (full guide)
- Balcony solar panels UK: what's allowed? (full guide)
- Plug-in solar panels with battery UK? (full guide)
- Where can I buy plug-in solar: Argos, Currys, Octopus? (full guide)
- Octopus plug in solar export: will I get paid? (full guide)
- Do you need planning permission for solar panels in the UK? (full guide)
FAQs
Is plug in solar legal in the UK?
Yes, in Great Britain since 27 August 2026, for kits that meet the government specification and are on the ENA register. [SI 2026/848]
Are plug-in solar panels worth it in the UK?
They're a modest saver, not a money-maker: £70 to £110 a year according to government figures quoted by Which?, with payback in 3.6 to 7.1 years. They're best if you have a sunny spot and use power during the day. [Which?]
What does 800W mean?
It's the legal maximum output from the inverter. The panels can total up to 2,000 W. [solar.org.uk]
Balcony solar in the UK?
It's allowed on suitable balconies, but not on timber balconies or certain claddings. In England, a timber wall or balcony isn't permitted development. Renters and leaseholders need permission. [solar.org.uk; wattnest]
Plug-in solar with a battery?
Battery-integrated kits are outside the current UK framework. [solar.org.uk]
Where can I buy plug-in solar panels?
Kits are listed at Argos, Currys and Octopus, among others. Whichever retailer you use, check the exact model is on the ENA G98 Type Test Register before buying. [plugsolarhq; The Eco Experts]
Will I be paid for spare power?
Plug-in kits don't qualify for the Smart Export Guarantee. Octopus pays export (Outgoing Prime) only if you bought the kit from Octopus and Octopus is your supplier. [pluginsolarcalculator; Octopus]
Do I need planning permission?
In England, most plug-in kits fall under permitted development, except on timber walls, balconies or cladding. Check with your council if you're in a listed building or conservation area. [wattnest]
Do I need an installer?
Check the kit's instructions before you start. If you're unsure about fitting it or about your home's wiring, use a qualified electrician.
Can I have two kits?
Not currently: it's one per household. [solar.org.uk]
Northern Ireland?
Not covered. [gov.uk]
Our recommendation
Plug-in solar is a low-risk way to trim your bill by tens of pounds a year. If you own a house with a suitable roof, rooftop solar is likely to save considerably more, so it's worth getting quotes for that too.