Plug-in solar in the UK: the 2026 rules and the kits that comply
Since 27 August 2026 you can buy a solar panel, plug it into a normal socket and start cutting your electricity bill, with no electrician needed for a compliant kit. Here's what the new rules say and which kits meet them.
- TSUN 400W bundle from Hampshire Generators is the cheapest we found, at about £350 on offer
- Octopus Energy plug-in solar bundle is the easy choice if you're with Octopus
- UKSOL Pro Compact 515W is sold by Argos, with easy returns
The rules in plain English
- Up to 800W going into your home through the plug. Panels can add up to more, but the inverter limits what goes in.
- A UK-compliant kit only, with a moulded UK plug fitted by the maker and a 5A fuse. A German or Dutch balcony kit doesn't count just because it has a CE mark.
- Plug straight into a wall socket. No extension leads, adaptors or multi-way blocks.
- Register it with your network operator within 28 days. It's free, done online through the myplugin.solar portal, and is a notification, not a request for permission.
- One plug-in solar device per household.
No batteries, for now. The new rules don't cover batteries, and a compliant plug-in solar kit must not be connected to battery storage. The government only began a safety study on plug-in batteries in August 2026, so we've left battery bundles out of this guide.
How much will it save?
It depends on where the panel faces, how much sun it gets and when you use electricity. Plug-in solar works best when you use power during the day, because anything you don't use goes back to the grid. Use the maker's estimate as a guide, not a promise.
Our picks
TSUN 400W plug-in solar bundle
A 400W single-panel bundle from Hampshire Generators. It was on offer at £349.99 (usually about £100 more) and was selling out fast, so check stock.
- Panel
- 400W
- Seller
- Hampshire Generators
- Plug
- UK
- Price
- About £350 on offer
Good
- Lowest price we found
Watch out for
- Stock comes and goes
- Smaller panel
Octopus Energy plug-in solar bundle
Octopus sells one-panel and two-panel kits using 460W JA Solar panels, with a microinverter, a 5m cable and plug, and a wall or ground mount.
- Panels
- 1 or 2 x 460W
- Includes
- Mount and 5m cable
- Seller
- Octopus Energy
- Price
- From £450
Good
- From your energy supplier
- Mounting kit included
Watch out for
- Often sold out
- Price shown after entering your address
UKSOL Plug-In Solar Pro Compact 515W
Sold through Argos, which makes buying and returning simple. It comes with an 800W microinverter, and bigger versions are available.
- Panel
- 515W
- Inverter
- 800W, with app
- Seller
- Argos
- Price
- About £599
Good
- High-street retailer
- Range of sizes
Watch out for
- Dearer than the smallest kits
Side by side
| Kit | Panels | Seller | Price |
|---|---|---|---|
| TSUN 400W bundle | 400W | Hampshire Generators | £349.99 |
| Octopus bundle | 460W or 920W | Octopus Energy | from £450 |
| UKSOL Pro Compact | 515W | Argos | £599 |
Prices were checked when we wrote this guide and change often. Tap through for today's price.
Before you buy: check the product says it meets the UK government's Interim Product Specification for plug-in solar (version 2.0). If it doesn't say, ask the seller. Rules are new, so they may change.
How we chose
We picked kits sold by UK retailers we could check, using prices reported in September 2026, then compared panel size, seller and price. We left out kits bundled with batteries, because batteries aren't covered by the current rules.
I write about the solar and battery systems I run and look after, and what I've learned from them, at uk99.com.
Common questions
Is plug-in solar legal in the UK?
Yes, since 27 August 2026, for compliant kits up to 800W that are registered with your network operator.
Do I need an electrician?
Not normally, for a compliant kit plugged into a suitable socket. If your wiring is old or you're unsure, get it checked.
Can I add a battery?
Not under the current rules. Plug-in batteries aren't covered, and compliant kits must not connect to battery storage.
Do I need planning permission?
Usually not for a small kit on a balcony, wall or garden, but listed buildings, conservation areas and flats with lease rules may differ. Check first.
Will I get paid for what I don't use?
Only with an export tariff, and your supplier may need a smart meter. Otherwise unused power goes to the grid unpaid.