Balcony solar panels mounted on a UK terraced house wall with micro-inverter unit visible, urban setting
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Plug-In Solar · The Law

Is Balcony Solar Legal in the UK? Yes, Since 27 August 2026

Plug-in balcony solar has been legal to fit yourself in Great Britain since 27 August 2026, as long as you use a compliant kit and follow a few rules. Here's what the law says, how to check a kit, and what renters and flat owners need to know.

Updated 23 October 2026

27 Aug 2026
Legal to self-install
800W
Maximum inverter output
126
Compliant devices on the register
28 days
To tell your network operator

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The short answer

Yes, it's legal. Since 27 August 2026 you can plug a compliant solar kit into a normal wall socket yourself in England, Scotland and Wales, under new regulations (SI 2026/848).
The kit must be on the register. Only complete kits listed as compliant on the Energy Networks Association (ENA) Type Test Register can be self-installed.
The limits: up to 800W from the inverter and up to 2,000W of panels, plugged straight into a fixed wall socket, never an extension lead or adaptor.
Tell your network operator within 28 days of connecting. It's a short online notification, not an approval.
Not covered: plug-in batteries, separately bought panels and inverters, and Northern Ireland, which has its own rules. Renters and flat owners also need the landlord's or freeholder's permission.
Balcony solar panels mounted on a UK terraced house wall with micro-inverter unit visible
A set-up like this has been legal to fit yourself since 27 August 2026, if the kit is on the ENA register.

What the Law Says

Plug-in solar became legal in Great Britain on 27 August 2026, when the Plugs and Sockets etc. (Safety) and Electricity Safety, Quality and Continuity (Amendment) Regulations 2026 (SI 2026/848) came into force. They were made on 16 July 2026, the same day the government published version 2 of the Plug-in Solar Device Interim Product Specification, which sets the technical rules every kit has to meet.

Before that date, feeding power from a solar panel into a home through a socket had no clear legal route, so kits were sold with warnings that they needed an electrician. The new regulations give a compliant kit its own route: you can plug it in yourself, with no electrician.

What about BS 7671 Amendment 4? Some guides say the wiring regulations changed to make balcony solar legal. BS 7671 is the standard for fixed wiring installed by electricians, and Amendment 4 is best known for the home battery placement rules from 15 October 2026. The plug-in route itself comes from SI 2026/848 and the product specification, not from BS 7671.

DateWhat happened
30 June 2026Government consultation on plug-in solar closes
16 July 2026SI 2026/848 made, and version 2 of the interim product specification published
27 August 2026The regulations come into force: compliant kits can be self-installed
30 September 202684 compliant kits listed on the ENA register
22 October 2026126 compliant devices listed, according to an independent tracker of the register

The Rules Your Kit Has to Meet

RuleWhat it means
Compliant, complete kitIt must be listed as compliant on the ENA Type Test Register as a complete product. A panel and inverter bought separately don't count, even if each is good quality.
Inverter outputNo more than 800W of AC power into your home
PanelsUp to 2,000W of panels on the inverter
ConnectionThe kit's own plug, straight into a fixed wall socket. No extension leads, multi-way adaptors or reels.
InstallationFitted and mounted as the manufacturer's instructions say
How manyOne device per household for now, until the network connection rules are updated
NotificationTell your network operator within 28 days of connecting
WhereEngland, Scotland and Wales. Northern Ireland has its own rules.

How to Check a Kit Is Compliant

1
Find the register reference
Compliant sellers quote an ENA reference number for the kit, in a format like ECOFL/21128/V1/A3 for EcoFlow's STREAM kits. If a listing doesn't mention the register, ask.
2
Check it on the ENA register itself
Search the ENA Type Test Register for that reference and check the status reads Compliant. Some entries are listed as non-compliant while evidence is awaited.
3
Make sure it matches what you're buying
The entry covers a specific combination of inverter and panels. A different panel or inverter from the one listed is a different product.
4
Buy from a UK seller
Marketplace imports are where most non-compliant kits turn up. Keep the receipt and the register reference with your house paperwork.

Our plug-in solar guide lists kits on sale now, with prices and what they save. Most 800W systems save roughly £95 to £140 a year.

Telling Your Network Operator

You have to notify your local electricity network operator within 28 days of plugging the kit in, under the G98 rules for small generators. It's a notification, not a request for permission, so you don't wait for a reply before using it. Most operators now take it through a short online form, and the kit's register reference is the main thing you need.

Renters, Flats and Balconies

Renters: ask your landlord before fitting anything to the outside of the building, and get the answer in writing.
Leaseholders: balconies and outside walls usually belong to the freeholder, so you need their permission too. Check your lease.
Mounting: panels must be fixed securely, especially on a balcony railing several floors up. Use the brackets the kit is listed with.
Your socket: the kit needs a fixed socket near the panels. If you need a new outdoor socket, that's a job for an electrician.
Don't run the plug through a window or door on an extension lead. That breaks the rules and is a fire risk.

Batteries and Portable Power Stations

The plug-in route covers solar generation only. A battery that stores energy and feeds it back into your home's wiring isn't covered, so it still needs to be wired in by an electrician. Our guide to plug-in solar batteries explains the options.

A portable power station that you charge from a socket and plug appliances into is different. It's an appliance, not a generator connected to your wiring, so it doesn't need registering.

Home Insurance

Insurers don't all say the same thing. Admiral's guidance says you don't need to tell it before getting plug-in solar panels, which it covers as contents, but it advises using a kit certified for UK use and following the instructions. Comparison site Go.Compare and Tesco Insurance advise telling your insurer, and say a non-compliant kit could put a claim at risk. Check your own policy and keep a note of what your insurer tells you. Our plug-in solar safety guide covers this in more detail.

Ready to choose a kit?

Compare plug-in solar kits on sale in the UK, what they cost and what they save on a typical balcony or wall.

See the Plug-In Solar Guide →

Balcony Solar Law: FAQs

Is balcony solar legal in the UK?

Yes, in England, Scotland and Wales. Since 27 August 2026 you can plug a compliant kit into a fixed wall socket yourself, under SI 2026/848. The kit must be listed as compliant on the ENA Type Test Register. Northern Ireland has its own rules.

Can I plug a solar panel into a normal socket?

Yes, if it's a complete kit listed as compliant on the ENA register, with an inverter of no more than 800W. Plug it straight into a fixed wall socket, never an extension lead or adaptor.

Do I need an electrician for plug-in solar?

Not to connect a compliant kit. You may want one to check older wiring or to fit an outdoor socket near the panels, and a battery that feeds your home's wiring still has to be wired in by an electrician.

Do I need to tell my network operator?

Yes. Notify your local electricity network operator within 28 days of connecting, under the G98 rules. It's a short online notification, not an approval.

Is a kit with 1,000W of panels legal?

Yes, as long as the inverter limits the power into your home to 800W and the complete kit is listed as compliant. The rules allow up to 2,000W of panels.

Can renters fit balcony solar?

Yes, with permission. Ask your landlord, and your freeholder if you're in a flat, before fitting anything to a balcony or outside wall, and get the answer in writing.

Are plug-in solar batteries legal?

The plug-in route covers solar generation only, so a battery that feeds power back into your home's wiring isn't covered and needs to be installed by an electrician. A portable power station you charge from a socket is just an appliance.

Updated 23 October 2026. Legal position from SI 2026/848 (made 16 July 2026, in force 27 August 2026) and the government's Plug-in Solar Device Interim Product Specification, version 2. Register counts from My Plug-In Solar (30 September 2026) and Plug-In Solar, Explained (22 October 2026), which track the ENA Type Test Register. Insurance positions from Admiral (17 September 2026) and Homebuilding & Renovating (17 September 2026). This is a summary, not legal advice: check the current rules on GOV.UK and the ENA register before you buy.

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