The July 2026 government response is a green light. This is exactly what it decided, the instruments that do the work, the final rules in the product spec, and the honest answer to the only question that matters: can you plug one in yet.
On 2026-07-17, buyers finally have an answer that is more than a promise. The Department for Energy Security and Net Zero has published its Government Response to the plug-in solar consultation, and it is a green light. After 466 responses across 17 questions, with 85 percent backing the product specification and 78 percent backing the timeline, the government intends to proceed. That is the headline. The detail matters more, and one part of it corrects something almost everyone, this site included, had been saying.
The government will proceed. It will amend the Plugs and Sockets etc. (Safety) Regulations 1994 and the Electricity Safety, Quality and Continuity Regulations 2002, and amend Engineering Recommendation G98, to allow plug-in solar to connect through a standard BS 1363 plug.
The instrument is an Interim Product Specification, not a BSI standard. The final IPS is version 2.0, July 2026, and is explicitly transitional, pending a future revision of BS 1363.
It is not in force yet. The government intends to lay the Statutory Instrument before Parliament very shortly, with the revised IPS published alongside it. Until that SI is in force and approved products exist, nothing changes for a buyer today.
The most important correction is a plumbing one. The change is not delivered by a shiny new British Standard. It is delivered by amending existing law. BS 1363, the standard behind the UK 13A plug, currently prohibits using a plug to connect an electricity-generating device to a socket. Rather than rewrite BS 1363 now, which respondents said could take years, the government is amending the Plugs and Sockets etc. (Safety) Regulations 1994 to create a narrow route to approve a BS 1363 plug for use with a plug-in solar microgenerator. Alongside it, the Electricity Safety, Quality and Continuity Regulations 2002 are amended, and Engineering Recommendation G98, the network notification rule, is updated by the ENA G98 working group.
The Interim Product Specification sits underneath those amendments and sets the safety conditions the plug, and the device it is sold with, must meet. So when people ask "where is the BSI plug-in solar standard", the honest answer is that the enabling document is the DESNZ IPS, a government specification, working with the amended regulations and G98. A full BS 1363 revision may follow later. The IPS is the bridge.
Version 2.0 of the specification is precise, and the numbers are worth committing to memory because kit marketing will blur them.
This is the line the storage crowd will not like. The specification "applies to only plug-in solar device". It explicitly does not cover plug-in battery systems, plug-in solar integrated with batteries, building-integrated PV, or PV systems installed to BS 7671 Section 712. The government acknowledged strong interest in battery-integrated products and deliberately kept them out to avoid widening a narrow, safety-led route. So the popular "solar plus a plug-in battery in one box" idea is not part of this. Storage remains a separate, later conversation.
The government did not just rubber-stamp the June draft. The response says the final IPS was strengthened on the points respondents pushed on: clearer product scope, clearer installation and circuit-identification guidance, mounting requirements, G98 notification, prohibited uses, and the new 960 W professional-advice threshold that was not spelled out before. The direction is unchanged, the guard-rails are tighter. A clause-by-clause diff would need the original June draft specification, which was not part of this release.
The final-stage impact assessment, dated 16 July 2026, frames the case in pounds. Plug-in solar kits sell for around £400 to £600 for an 800W system in Europe, roughly £500 to £750 per kW, against a median £1,595 per kW for small-scale rooftop solar in Great Britain in 2025/26. In other words, it is the low-entry-cost route into solar for people without a suitable roof or a spare few thousand pounds. The department puts the equivalised annual household benefit at about £24.3 million, in a wide range from £11.1 million to £47.5 million, over a fifteen-year appraisal. Ranges that wide tell you the honest truth: nobody knows yet how fast Britain adopts this, which is exactly why Germany, with over 1.3 million registered kits, keeps getting cited.
This is where careful reading pays off. The government has confirmed the policy and published the final specification, but the legal switch is the Statutory Instrument, and that has still to be laid before Parliament and come into force. On top of that, no product has yet been approved and registered under the new route. Both of those need to happen before a plug-in kit is a lawful, self-install option.
The July 2026 response commits the government to proceed, and the final Interim Product Specification, version 2.0, is out.
The legal switch amends the PSSR 1994, the ESQCR 2002 and G98. The government says "very shortly", and consumer guidance lands when it does. Close, but not yet live.
No compliant product yet exists. Until one is approved and registered, plug-in self-install is not a lawful option.
So the practical picture for a buyer today is unchanged, even though the news is big. If you want panels feeding your home now, the compliant route is still a registered electrician with a hardwired connection and a G98 notification to your network operator. What has changed is certainty: the plug-in route is no longer "maybe", it is "confirmed, and imminent".
Two things now decide the real start date: the SI being laid and coming into force, and the first products being approved and appearing on the ENA G98 Type Test Register. I will track both on this site and update the moment either moves. If you are a renter or flat-dweller who has been waiting, my honest advice has not changed: use the time to work out whether your spot even gets the sun to make it worthwhile before you spend anything. Run your postcode through the savings calculator, check your balcony with the shadow simulator, and read the regulation page so you can tell a compliant kit from a hopeful import when they arrive. The decision is made. The kit is coming. Get your own numbers straight so you buy the right thing on day one.
Get your own numbers straight so you buy the right thing on day one, not a hopeful import.