The UK changed its mind about balcony solar on 27 August 2026. Until that date, plugging a generator into a socket was not a lawful way to connect one here; since then it is, provided the device meets a specification the government published in July. A great deal of what is online — including some of it written this year — predates that and is wrong in one direction or the other.
This is the UK position as we understand it, in the order it will affect you: how it may be connected, whose permission you need, and who has to be told afterwards. Where something is genuinely unsettled we say so rather than picking the answer that sells more kits.
Can you plug a solar panel into a socket in the UK?
Since 27 August 2026, yes — if the device is compliant. SI 2026/848 created a legal category called a plug-in microgenerator and allowed an approved plug to feed power into a socket. To qualify a device must be solar only, rated at no more than 800 W of AC output, incapable of importing energy for storage, and compliant with the Plug-in Solar Device Interim Product Specification version 2.
Availability is not compliance. A kit being on sale in the UK tells you nothing about whether it meets that specification, and a European device with an adaptor certainly does not. Ask the seller which specification it meets, by name, in writing.
The regulation extends to England, Wales and Scotland. It does not extend to Northern Ireland.
What this did not change: you still notify your network operator under G98, you still need the building owner’s permission for anything fixed to the building, and the new rules say nothing at all about whether your balustrade can carry a panel in a gale. It made one connection method lawful. It did not make the rest of the job disappear.
Does the network operator need to know?
Yes, and this part is easy. A microgenerator of this size is covered by the Energy Networks Association’s G98 process, which lets a small generator be connected first and notified to your distribution network operator afterwards, rather than waiting for approval. Above that threshold you would be in G99 territory and waiting for permission — one of several reasons the whole category stops at 800 W.
The window is 28 days from commissioning — the day the system is first switched on — and there is no fee. We submit it as part of the install, so you do not have to work out who your distribution network operator is. It is set by where you live rather than by who sells you your electricity, which is the bit most people get wrong.
If you rent, what do you need from the landlord?
Written consent, before anything is fixed to anything. Almost every tenancy agreement in the UK restricts alterations to the property, and a bracket bolted to a balcony railing is an alteration whatever the marketing says.
In practice landlords say yes more often than tenants expect, because the ask is small and the answers to their three real questions are good: nothing is drilled that cannot be made good, the electrical work is done by a qualified electrician and certified, and the whole thing leaves with you at the end of the tenancy. We can put those three points in writing for you to forward.
Where a landlord says no, it is usually because the building is not theirs to decide about — they own the flat but not the balcony envelope. That is a factor or freeholder question, not a landlord one, and the next section covers it.
If you own a flat, whose permission is it?
Read the title deeds or the lease first, and expect the balcony to be less yours than you think. It is common for a balcony to be common property with an exclusive right of use — you are the only person allowed to stand on it, but you do not own the structure and cannot alter its appearance alone.
In Scotland, tenement flats are governed by the title deeds and, where those are silent or incomplete, by the Tenement Management Scheme in schedule 1 of the Tenements (Scotland) Act 2004. There is a distinction in that scheme worth knowing: it lets owners take majority decisions about the maintenance of common property, but it does not stretch to alterations. An improvement — which is what a solar panel is — needs the consent of the owners of the part being altered, and where that part is owned in common, that means all of them. Many tenements have title burdens or a factoring agreement setting out their own process, and those override the default.
In England and Wales the question is what the lease says. Look for the alterations covenant and any covenant about the external appearance of the building; consent comes from the freeholder or the management company, usually as a formal licence to alter, and often for a fee.
None of this is a reason not to proceed. It is a reason to ask before you buy rather than after, and to ask in writing.
Do you need planning permission?
Usually not — and in Scotland the position improved in 2024. Class 6HA of the permitted development order covers solar PV and solar thermal equipment on a dwelling, and "dwelling" there includes a building containing flats and a flat within one. Before that amendment, solar permitted development covered houses and not flats, which is why a lot of what you will read online is out of date and gloomier than the law now is.
Class 6HA does not permit it in four cases: if the equipment would protrude more than a metre from the outer surface of the wall; if the building is listed or within the curtilage of a listed building; if it is in a World Heritage Site; and — the one that actually catches balconies — if the building is in a conservation area and the equipment would sit on the principal elevation, or on a side elevation that fronts a road.
That last one matters, because a balcony is on the front or the side of the building almost by definition. If you are in a conservation area, assume you need to ask. It is a normal outcome rather than a disaster; it adds a step. We will tell you at the quote stage if your address is listed or sits in a conservation area.
One question we cannot answer for you. Class 6HA plainly covers a fixed installation — whether a clamp-on panel that comes off without a trace counts as "installation on a dwelling", or as development at all, is not settled by the legislation and different councils may take different views. Ask your council’s planning duty officer if it matters to your decision; it is a free question about a specific address.
Is the railing strong enough — and who decides?
A surveyor decides, on site, before you have paid us anything. A balustrade is engineered to resist a person leaning on it. A 1.7 m panel is a sail, and in an exposed Scottish position the wind load it transmits into the railing on a bad February night is the governing case for the whole installation.
That assessment is the part of this job that most cheap kits skip entirely, and it is the part with real consequences. If your railing cannot take it, there is sometimes an alternative — fixing to the slab, or to the wall behind — and sometimes there is not. Either way you will be told, and you will not be charged for being told.
We will not fit a panel to a railing we do not believe will hold it. If the survey says no, the survey says no — there is no upsell path from that conversation, and you will not have paid us anything.
What about insurance?
Tell your contents insurer, and if you are a leaseholder make sure the building policy holder knows too. This is a five-minute phone call that people skip and then regret. An installation you did not declare is an installation your insurer can decline to consider.
The electrical certificate from the install is the document that makes that call short. Keep it, and give a copy to your landlord or factor if they asked for one as a condition of consent.