Is plug-in solar actually legal in the UK now?

Yes, as of 27 August 2026, under SI 2026/848. A plug-in solar device is legal provided it complies with the Plug-in Solar Device Interim Product Specification v2 (published 16 July 2026) and has a maximum rated AC output not exceeding 800W. It must be sold as a complete, approved unit — not assembled from separate parts — and connect via a standard UK plug and socket.

Can I add a battery to a plug-in solar kit?

Not under this exemption. The legislation explicitly excludes any device 'designed to import electrical energy... for the purpose of storing energy for later supply.' A solar-only microinverter kit qualifies; a kit bundled with a battery power station (e.g. EcoFlow's Delta 2 Max or Delta 3 Plus bundles) does not. If you want battery storage, that's a separate product category with its own rules, not covered by this change.

Do I need an electrician to install it?

No — that's the entire point of the exemption. A compliant kit plugs straight into a standard wall socket, no rewiring or qualified electrician needed. What you shouldn't do is use an extension lead or adaptor between the kit and the socket, or connect it to anything other than the socket it's designed for.

Do I still need to tell my electricity network operator?

Notifying your Distribution Network Operator (DNO) is standard practice for any grid-connected microgeneration under the existing G98 framework, and is widely recommended by manufacturers and installers even though the notification mechanics sit outside the specific plug-in solar statutory instrument itself. Check your kit's own instructions and your DNO's website for the current process, since this is genuinely new and processes are still settling.

How many plug-in solar devices can I have?

One per household, connected to a single circuit. This isn't a way to stack multiple 800W units to get around the output limit.

Plug-In Solar Panels UK Guide (2026) — Legal Rules & Setup

Why This Guide Exists Right Now

Plug-in solar panels became legal to use in the UK on 27 August 2026, under SI 2026/848. Before this, a genuinely plug-and-play solar kit — one you could buy, plug into a wall socket, and start generating electricity from with no electrician, no roof work, and no formal grid application — existed in a legal grey area in Great Britain, even though similar “balcony solar” kits had been common in Germany and the rest of the EU for years.

That grey area is now closed. This guide covers what’s actually allowed, how to set a compliant kit up, and — more usefully than most of what’s being published this week — the specific things worth checking before you buy, including one detail a lot of early coverage is getting wrong.

How Plug-In Solar Actually Works

A plug-in solar kit has three parts:

One or more solar panels — typically wall-mounted, balcony-railing-mounted, or ground/roof-mounted depending on the kit
A microinverter — converts the panel’s DC output into AC electricity matched to your home’s supply
A standard UK plug — the microinverter connects to a normal wall socket on a circuit in your home

Once plugged in, the electricity it generates is used directly by whatever’s running in your home at that moment — it doesn’t get exported to the grid for payment, and (under this specific exemption) it can’t be stored in a battery for later. If your kettle is on and the panels are generating, you’re using solar power instead of grid power in that moment. If nothing’s drawing power, the excess simply isn’t captured.

What the Law Actually Requires

The specifics, taken directly from the legislation rather than paraphrased:

Maximum 800W AC output at the microinverter — this is the hard limit, regardless of how many panels are attached ahead of it
Must be sold as a complete, pre-approved unit — you can’t build one from separate parts and expect it to be compliant
Standard UK plug and socket connection — no extension leads, no adaptors, no hardwiring
Storage is explicitly excluded — see below, this is the detail worth paying attention to
One device per household, on a single circuit

The Detail Most Buying Guides Are Getting Wrong

A lot of the kits being marketed this week as “the plug-in solar solution” are bundles that pair a solar panel with a battery power station — EcoFlow’s Delta 2 Max or Delta 3 Plus bundles are the obvious example. These are genuinely good products, but they don’t qualify for the plug-in solar exemption, because the legislation specifically excludes any device designed to import and store electricity for later use.

That doesn’t mean those bundles are illegal — it just means they’re a different product entirely, governed by different (and generally stricter) rules around battery storage and grid connection. If your goal is specifically to use the new plug-in-solar exemption — buy now, plug in today, no further paperwork beyond a DNO notification — you want a solar-only microinverter kit, not a battery-bundled one.

A genuinely compliant, solar-only 800W kit:

ECOFLOW STREAM 800W Micro Inverter with 4×250W PV Solar Panels — a complete panel-and-inverter bundle at the full 800W limit, no battery involved

A battery-bundled kit that looks similar but sits outside this exemption:

EcoFlow PowerStream with Delta 2 Max / Delta 3 Plus — a genuinely useful product, just not “plug-in solar” under the new rules, since the battery makes it a storage device

Setting One Up: The Practical Steps

Check the specific socket circuit you’re using can handle it. An 800W load is modest, but if you’re on an older or heavily-loaded circuit, get it checked.
Mount the panel securely. Wind loading on a balcony railing or wall mount is a real consideration — follow the manufacturer’s mounting instructions exactly, don’t improvise a bracket.
Plug the microinverter directly into the wall socket. No extension lead, no adaptor, no multi-socket board.
Register the device with your kit’s app if it has one — most current kits (EcoFlow, Anker) require this for monitoring and firmware updates.
Notify your DNO. This sits outside the plug-in solar statutory instrument itself, but is standard practice for grid-connected microgeneration and is what most manufacturers recommend in their own setup guidance. Check your specific DNO’s current process, since this is a fast-moving area right now.

Things to Check Before You Buy

Confirm the kit is actually solar-only if that’s what you want — read the listing carefully, since “balcony solar” is being used as a marketing term for both compliant solar-only kits and non-compliant battery bundles.
Check it’s rated at or under 800W AC output, not just “up to 800W panel capacity” — panel wattage (DC, before the inverter) and the inverter’s actual AC output are different numbers, and only the AC output figure matters for compliance.
Look for explicit compliance with the Interim Product Specification v2 in the manufacturer’s own documentation, not just marketing claims of “UK compliant.”
Check your tenancy or lease if you’re renting or in a flat — the legislation makes the electrical side legal, but it doesn’t override any separate restriction in your tenancy agreement or building’s leasehold terms on fixing anything to a balcony or external wall.
Factor in realistic UK generation, not marketed peak output. An 800W-rated kit will rarely hit 800W in typical UK weather and panel orientation — treat the headline figure as a ceiling, not an average.

The Bottom Line

Plug-in solar is now a genuinely legal, genuinely simple way to offset some home electricity use without an electrician or a grid application — but only for solar-only kits under 800W AC output, bought as a complete approved unit, plugged straight into a wall socket. If a kit includes a battery, it’s a different product with different rules, however it’s marketed this week.