Plug-In Solar Becomes Legal in the UK Today
Plug-in solar became lawful to use in the UK today, 27 August 2026, as SI 2026/848 — the Plugs and Sockets etc. (Safety) Regulations 1994 and Electricity Safety, Quality and Continuity Regulations 2002 (Amendment) Regulations 2026 — came into force. For the first time, a UK household can legally connect a small solar generator directly to a standard wall socket, without hiring an electrician and without waiting for prior approval from a network operator, provided the device meets the Government’s technical specification.
The instrument was made on 16 July 2026 and laid before Parliament the following day, giving the market a six-week run-in before today’s commencement. It followed a DESNZ consultation that ran from 16 to 30 June 2026 and drew 466 responses, 85 percent of which agreed with the proposed technical specification.
What actually changed
The reform works by amending two existing pieces of regulation together. The Plugs and Sockets etc. (Safety) Regulations 1994 previously prevented a standard BS 1363 plug from being approved for a device that generates electricity, because the standard assumed plugs only ever draw power. SI 2026/848 creates a narrow route for a notified body to approve a plug built for this reversed use, on condition the attached device meets the Plug-in Solar Device Interim Product Specification, version 2 — published by DESNZ on 16 July 2026 and named directly in the instrument. Separately, the reform amends the Electricity Safety, Quality and Continuity Regulations 2002 so that meeting the specification substitutes for the general grid-connection compliance route, for this category of device only.
The specification caps output at 800 VA (3.5 A) measured at the inverter, permits up to 2,000 W of solar panel capacity behind that ceiling, and requires anti-islanding protection that disconnects the device from the mains within 100 milliseconds of a power cut, with the voltage at the plug pins falling below 34 V inside that same window. Above 960 W of panel capacity, a professional wiring check is advised before connecting.
The two limits everyone should know
Two restrictions are easy to miss, and both matter more than the headline output figure. First, although the specification permits one device per electrical circuit, the separate network-connection standard, Engineering Recommendation G98, continues to cap installations at one device per household in total “unless and until” G98 itself is amended — and no date for that amendment has been published, so a household with several circuits should still expect a limit of one device today. Second, the UK exception explicitly excludes battery storage: a device designed to import energy for the purpose of storing it for later supply does not meet the legal definition of a plug-in microgenerator and gets none of the benefit of the reform, however small the battery. Both points, with full sourcing, are covered in our breakdown of what you can and cannot do now.
The reform also does not apply uniformly across the UK. The product-approval side (regulation 2) extends to England and Wales, Scotland and Northern Ireland; the grid-connection side (regulation 3) that actually enables the simplified connection route extends to England and Wales and Scotland only. No instrument or timetable extending the connection route to Northern Ireland has been published.
What has not changed
Notification to your network operator under G98 is still required, even for a single small device, though the Energy Networks Association’s “fit and inform” process means no prior approval is needed before switching on. Landlord and leaseholder consent requirements are untouched — the reform changes electrical-safety law, not tenancy or property law, and the UK still has no equivalent of Germany’s statutory tenant right to demand permission. Smart Export Guarantee payments remain out of reach for these devices too, since they are unmetered for export and not installed by an MCS-certified installer — any saving comes from electricity you would otherwise have bought, not from anything exported.
For the full legal timeline, the regulation-by-regulation detail and the primary sources, see our dated status tracker, maintained since before the Government’s July consultation response and updated today to record commencement.