Is plug-in solar legal in the UK? Rules and regulations explained

Yes. Since the plug in solar panels UK law change on 27 August 2026, compliant kits are legal in England, Scotland and Wales, but not Northern Ireland. [gov.uk; SI 2026/848]

The law change, step by step

24 March 2026: the government said it would legalise plug-in solar. [Balcony Solar Guide]
16 July 2026: SI 2026/848 was made, along with the Plug-in Solar Device Interim Product Specification (IPS). [solar.org.uk]
27 August 2026: the rules came into force in Great Britain. [gov.uk]

The wiring regulations (BS 7671) were not amended. Instead, a compliant kit can meet the IPS and may use a standard BS 1363 plug. [solar.org.uk; wattnest]

Plug-in solar UK regulations: the key rules

800W maximum output, with up to 2,000 W of panels (see 800W kits).
The kit must meet the IPS and be listed on the ENA G98 Type Test Register.
One kit per household for now, under the current network rule (G98).
Plug straight into a wall socket. No extension leads or adaptors.
The kit must switch off within 100 ms if the grid fails.
Kits with batteries and self-assembled kits aren't covered (see plug-in solar with a battery).
Not allowed on timber balconies, timber cladding, ACM, MCM or HPL cladding, or buildings undergoing external wall remediation.

[solar.org.uk]

We'll only list kits shown on the Energy Networks Association register.

Registering your kit

You can register a kit with your network operator yourself at myplugin.solar, under G98 Issue 2 Amendment 1, which also took effect on 27 August 2026. [Balcony Solar Guide]

Permission and insurance

Renting or leasehold? You'll need your landlord's or freeholder's permission first. [solar.org.uk] Check your own and your building's insurance before installing; this is a requirement of the specification. [solar.org.uk] For planning, see plug-in solar planning permission.

Questions