Is Plug-In Solar Legal in the UK? The 27 August 2026 Rule Change Explained

This is the question flooding UK forums since the government's announcement: is plug-in solar actually legal, or a grey-area gadget that breaches wiring regulations? The honest answer has two parts, and most coverage only gives you the first. Part one — yes, a new law exists and it removes the biggest barrier. Part two — that legal door only opens for a small, named list of devices, and most plug-in solar kits currently marketed in the UK aren't on it yet. This article covers both parts in full, with the exact conditions, duties and gaps, so you don't end up compliant on paper but exposed in practice.

What changed and why

Before 27 August 2026, the position was simple and strict: any equipment that generates electricity and connects to a UK home's mains wiring required installation by a qualified electrician, plus certification under the MCS scheme, before it could be connected at all. That rule didn't distinguish between a 4kW rooftop array and a single panel in a back garden — generation-to-mains was generation-to-mains, and it needed a certified installer. It's part of why "plug-in solar" existed in Germany and other EU countries years before it was legal to plug one in here; people bought the hardware for use abroad, or left it switched off, because connecting it without an electrician put them in breach of wiring regulations.

Statutory Instrument SI 2026/848 changes that, but narrowly. It came into force on 27 August 2026 across England, Scotland and Wales and creates a specific, interim carve-out: small plug-in solar kits that meet a defined technical specification, with a microinverter that has passed a formal type test, no longer need an electrician or MCS certification to be connected. It's not a blanket deregulation of home generation — it's a tightly scoped exception for one narrow category of low-power kit.

That distinction matters for the rest of this article. The SI didn't rewrite the general rule. It carved a hole in it, and the hole has an exact shape — which is what the technical conditions below describe.

A condensed version of the same timeline — law made, in force, what the 800W AC cap actually covers — is kept as a dated status panel at 800wsolar.co.uk.

The technical conditions of the exemption

The interim rule only covers kits within specific limits. If a kit falls outside any of these, it falls back under the pre-27-August rules and needs an electrician and MCS certification like any other generation equipment.

• 800W AC output cap. The microinverter's output to the socket is capped at 800W, regardless of how much DC power the panels upstream can generate. If your panels can produce more than that, the inverter clips the excess — it simply doesn't let more than 800W AC out the plug.
• 2,000W DC panel cap. The combined rating of the solar panels feeding into the microinverter can't exceed 2,000W. You can run more panel wattage than the AC output because of clipping, but there's a ceiling on the DC side too.
• No batteries. Battery storage is explicitly excluded from this interim rule. A plug-in kit with an integrated or add-on battery doesn't qualify, no matter how small.
• Anti-islanding protection is mandatory. The microinverter must detect a mains outage and kill its output instantly, so the plug pins are never live when the wall socket isn't receiving grid power. This is the safety feature that makes a plug-in device workable in the first place — without it, someone working on the network during a power cut could be exposed to a live socket that's supposed to be dead.
• The socket should sit on an RCD/RCBO-protected circuit. Most modern UK consumer units already provide this, but it's worth checking, especially in older properties. If you're not sure whether your target socket is protected, a plug-in RCD socket tester on Amazon · on eBay will tell you in seconds, and it's a sensible five-minute check before you plug anything in.
• No extension leads between the inverter and the wall socket. The kit has to go straight into the socket. Running it through an extension lead or multi-socket adaptor isn't permitted under the exemption's safety conditions.

For a full side-by-side of how these limits compare to a normal rooftop installation, see our plug-in solar vs rooftop solar comparison.

The two legal duties after you plug in

Getting a compliant kit and plugging it in correctly isn't the end of your obligations — there are two administrative steps you're legally required to complete afterwards, and neither is optional.

1. Register the device at myplugin.solar. A straightforward online registration — you log the device against your address so there's a record of what's connected where.

2. Submit a G98 notification to your DNO within 28 days. Your DNO (Distribution Network Operator — the company that owns and runs the physical electricity network in your area, distinct from your energy supplier) needs to know a generation device has been connected. This is a short online form, not a permission-seeking application — you're not waiting for approval to plug the kit in, you're notifying the network operator after the fact, within the 28-day window. Under the initial rules, this is limited to one device per household.

Skipping either step takes you outside the terms of the exemption itself. DNOs use G98 notifications to track small-scale generation on their local grid, which matters for network safety and capacity planning even at 800W a time.

The catch nobody markets loudly: legal to sell isn't legal to plug in

This is the part that trips people up, and it's arguably the single most important thing in this whole article: a plug-in solar kit being legally sold in a UK shop or marketplace tells you nothing about whether it's legal to connect to your mains socket. Those are two separate tests. Retail sale is governed by general consumer product rules. Connection to the mains is governed by SI 2026/848, and its test is specific: is this exact microinverter model listed "Compliant" on the ENA G98 Type Test Register?

As of the register's status in the days immediately following the rule change (26–28 August 2026), only eight devices carry that "Compliant" listing: seven kits from UKSOL Ltd, plus the Perlight PowerPlug MAX 465. Everything else currently sold or marketed as "plug-in solar" — including kits from EcoFlow, Anker, TSUNESS, FoxESS, Octopus Energy's FoxESS-based filing, Segen and Modular Solar — is listed "Non-compliant." That word doesn't mean the device failed a safety test. It means the manufacturer's testing and paperwork with the ENA isn't finished. Until that listing flips to "Compliant," plugging one of those devices in is not lawful under the exemption, even though the retailer selling it to you has done nothing wrong.

We've built a dedicated, continuously updated breakdown of exactly which devices are listed where — see the ENA G98 register guide for the full compliant/non-compliant list, since this status will change as more manufacturers complete testing, and checking it before you buy is the single most useful five minutes you can spend on this process.

If you've already checked the register yourself and want a kit that's currently listed Compliant, the UKSOL Pro Max 1260W on Amazon · on eBay and the UKSOL Pro Plus 1030W on Amazon · on eBay are the two most popular options right now, both built around UKSOL's own G98-listed microinverters. For a wider shortlist with pricing and panel configurations, see our best plug-in solar kits comparison.

To be clear about the other side of this: EcoFlow's plug-in solar kit on Amazon · on eBay and Anker's plug-in solar kit on Amazon · on eBay are both real, purchasable products, and it's entirely legal for those retailers to sell them to you. What isn't currently legal is connecting either to a UK wall socket under the SI 2026/848 exemption, because their listings on the ENA register are "Non-compliant" at the time of writing. Buy one now if planning ahead, but leave it unplugged until its listing status changes — check the register yourself before you connect anything, since these statuses move.

This is the gap the 800wsolar register ledger exists to close: it publishes the ENA type-test position for each kit on sale rather than the marketing claim printed on the box, and refuses to describe uncertified hardware as legal to plug in.

Permission vs certification: what renters and leaseholders still need

SI 2026/848 removes a regulatory requirement — the need for an electrician and MCS certification. It does not touch a completely separate requirement: your landlord's or freeholder's permission to physically fit anything to the building or its exterior, or to plug a device in permanently in a rented home.

If you rent your home or hold a leasehold flat, you still need to check your tenancy agreement or lease before mounting a panel on a balcony rail, a wall bracket or a windowsill. The law change doesn't override what your landlord or freeholder has separately agreed with you. Our dedicated guide for renters and flats goes through the permission conversation in more detail, including what to raise with a landlord and how leasehold buildings tend to differ from single-let houses.

Homeowners in England generally benefit from Permitted Development rights for a simple panel mount on their own property, meaning planning permission usually isn't required for a modest, ground- or wall-mounted plug-in kit. That position can differ for listed buildings, conservation areas, and flats, where additional consent may be needed regardless of the plug-in exemption. If your property falls into any of those categories, check with your local planning authority before fitting anything permanently, even though the electrician requirement has gone.

What's still explicitly not allowed

Worth being blunt about the boundaries of this exemption, since they're easy to miss in the excitement of "no electrician needed":

• Plugging in a Non-compliant-listed device. As covered above, brands like EcoFlow, Anker, TSUNESS, FoxESS, Octopus Energy and Segen are not yet cleared for connection under the exemption, whatever their marketing implies.
• Batteries. Any plug-in kit with battery storage falls outside this interim rule entirely, regardless of its output or panel wattage.
• Extension leads. The inverter has to plug directly into the wall socket — no leads, no multi-way adaptors in between.
• More than one device per household. The initial rules cap this at a single plug-in solar device per home.
• Fitting without landlord or freeholder consent. Renters and leaseholders still need sign-off for physical fitting, separate from the electrician question.

None of these are complicated once you know them, but they're exactly the details that get skipped in a quick product listing or a rushed news segment. If you're still getting oriented, our guide on what plug-in solar actually is in the UK covers the category from the ground up.