What Are Plug-In Solar Panels?
Plug-in solar panels are small photovoltaic systems — typically one or two panels totalling 300–800W — that connect to your home through a standard 13A socket rather than being wired into your consumer unit. Each system pairs the panels with a micro-inverter that converts DC output to 230V AC, so the electricity flows straight into your home's circuits and reduces what you draw from the grid, second by second.
That plug is the whole point. No electrician, no scaffolding, no roof, no permanent alteration to the property. You can assemble a kit in an afternoon with hand tools, and unplug it and take it with you when you move. In Germany — where over 1.2 million systems are installed and the technology is formally standardised under DIN VDE 0100-551-1 — they're called Balkonkraftwerke, balcony power stations. But "balcony solar" undersells them: in the UK they're just as commonly installed in gardens, on flat roofs, and on walls.
If you're completely new to the technology and want the ground-up explanation of how the components work together, start with our beginner's guide to balcony solar — this page focuses on the bigger picture: legality, costs, savings, and buying.
Are Plug-In Solar Panels Legal in the UK?
This is the question everyone asks first, so here is the honest answer: not yet. The government's own words, in its July 2026 consultation response, are that “at present these products cannot be sold or used lawfully in the United Kingdom, as they do not currently comply with the Plugs and Sockets etc. (Safety) Regulations 1994 (PSSR) or the Electricity Safety, Quality and Continuity Regulations 2002 (ESQCR)”.
That changes on 27 August 2026, when SI 2026 No. 848 comes into force. It amends the PSSR to allow a BS 1363 plug to be approved for a plug-in microgenerator, and amends the ESQCR so that a plug-in microgenerator may be installed and operated provided it complies with the final Interim Product Specification. Two things follow from that:
- The specification is now law-facing, not a consultation draft. Version 2 was published on 16 July 2026 and is the document the ESQCR amendment points to.
- Verification on the ENA Type Test Register is the gate. The specification requires devices to be type tested to G98, registered, and confirmed as assessed and compliant before being placed on the market. Submitting a device for registration does not count.
- 800 VA is the confirmed output limit — not an expected one — with maximum current not exceeding 3.5 A, and total DC panel capacity capped at 2,000 W.
The specification (originally published for consultation in June 2026) also fixes a standard BS 1363 UK plug with a 5A fuse and partially insulated pins. A longer term BSI standard is still in development and will eventually succeed it.
A jurisdictional note worth knowing: the ESQCR limb that makes use lawful extends to England, Wales and Scotlandonly. The plug approval route in the PSSR covers Northern Ireland as well, but G98 applies to Great Britain — Northern Ireland uses G98/NI, and the specification says applying it there is “subject to further consideration”.
G98 notification to your Distribution Network Operator remains mandatory for any grid-connected generation, and the specification requires products to say so on the label. It's an online form and it's free — our G98 explainer walks through it. For the full legal picture, including planning permission and leasehold considerations, see is balcony solar legal in the UK?
Nothing is verified yet — don't buy on the strength of the new rules
Where Can You Install Them?
Despite the "balcony solar" nickname, a plug-in system works anywhere you have sun, a mounting surface, and a socket within cable reach:
- Balcony railing: the classic setup — panels hung on the railing at a near-vertical angle. Simple, secure, and ideal for flats.
- Garden or ground mount: often the best-performing option, because a ground frame lets you set the optimal 30–35° tilt and face the panels due south. Popular for powering garden offices, where daytime generation matches daytime use almost perfectly.
- Flat roof: garages, extensions, and flat-roofed outbuildings take ballasted frames that need no drilling — see our flat roof guide.
- Wall mount: a south-facing wall with drilled brackets. More permanent, but useful where there's no railing or ground space.
Orientation matters more than location type. South-facing is best; east or west costs you roughly a third of annual output; north-facing isn't worth it in the UK.
How Much Do Plug-In Solar Panels Cost?
As of 2026, complete kits from reputable UK retailers fall into these bands:
| Kit | Typical Price | Best For |
|---|---|---|
| Single-panel 400W | £299–£449 | Small balconies, trying the technology |
| Dual-panel 600W | £399–£599 | The sweet spot for most households |
| Dual-panel 800W | £499–£949 | Maximum output under the confirmed UK limit |
| Battery-integrated system | £1,200–£2,500 | Households out during the day — but excluded from the plug-in route |
One important caveat on that last row.Battery-integrated products sit outside the specification and outside the regulations entirely — the specification excludes “plug-in solar PV devices integrated with battery systems”, and SI 2026 No. 848 excludes any device designed to import energy for the purpose of storing it for later supply. They are not a bad buy, but they cannot use the plug-in route: a battery system needs a conventional installation by a qualified electrician with the appropriate G98 notification. See our analysis of the battery exclusion.
Prices include panels, micro-inverter, mounting hardware, and plug cable. There is currently no VAT relief or grant for plug-in solar in the UK, though that may change as legalisation completes. Our full cost guide breaks down what drives the price differences and where it's safe to economise.
What Will You Actually Save?
A realistic annual saving is £80–£200, giving a payback period of roughly 6–10 years. The spread is wide because three variables dominate:
- System size and orientation. An 800W south-facing system in southern England generates 550–700kWh a year; a 600W east-facing system in Scotland might manage half that.
- Your region. Southern England gets roughly 1,050–1,150 peak sun hours annually; Scotland closer to 750–900.
- Self-consumption. This is the one people miss. You only save money on the electricity you use as it's generated. If your home is empty from 8am to 6pm and you have no battery, most of your generation exports to the grid — and because the Smart Export Guarantee requires MCS certification that DIY installs generally can't get, that export earns you nothing.
Our savings guide has region-by-region figures, or use the savings calculator for an estimate based on your postcode, orientation, and system size.
The easiest savings upgrade is free
Plug-In Solar vs Rooftop Solar
These are different products for different people. Rooftop solar is a 3–12kW permanent installation costing £5,000–£12,000, professionally wired, MCS-certified (so it can earn export payments), and only available if you own your home and roof. Plug-in solar is a £300–£950 system you install yourself, sized at 300–800W, that moves house with you. If you own a home with a good roof and the capital, rooftop wins on raw economics. If you rent, live in a flat, or want a low-commitment start, plug-in solar is the only game in town. The full comparison is in plug-in solar vs rooftop solar.
The Best Plug-In Solar Kits in the UK
The UK market has consolidated around a handful of credible brands: EcoFlow, Anker Solix, APsystems, Hoymiles, and Jackery. In brief:
- EcoFlow STREAM — our best all-rounder: 800W output, the strongest app, and a modular battery you can add later. Bear in mind that adding the battery takes the system outside the plug-in route.
- Anker SOLIX — the highest-generating system available in the UK, best for a good south-facing position.
- Budget 600W DIY kits — from around £399, no frills but solid results if you're happy with a basic setup.
Full side-by-side comparisons, including inverter brands, warranties, and app quality, are in our best balcony solar kits round-up.
Where to Buy — and What to Avoid
Specialist UK solar retailers and mainstream marketplaces both stock plug-in kits, and supermarket chains are in talks to carry them following the March 2026 announcement. Whoever you buy from, insist on:
- A declaration on the product that it complies with the Interim Product Specification — the specification requires one, and it is the marking that matters here. CE or UKCA marking is not the compliance test for plug-in solar: the government has said only that a dedicated conformity marking for these products could be developed in future.
- A listing on the ENA Type Test Register that is confirmed as assessed and compliant. Registration alone is explicitly not enough.
- A recognised inverter brand (Hoymiles, APsystems, Deye) with a five-year-plus warranty
- UK-based support and a clear returns policy
- Mounting hardware suited to your installation — railing, ground, flat roof, or wall
The false economy to avoid is the ultra-cheap marketplace kit from a seller with no UK presence. The inverter is the safety-critical component in a plug-in system, and £50 saved on the purchase price isn't worth an unknown-quantity inverter feeding your home's wiring.
Getting Started
- Run your numbers through the savings calculator.
- Read the legal status guide and understand your G98 obligation.
- Shortlist from the comparison, then check the certification tracker to see whether that kit is verified on the ENA register yet.
- Once a verified kit is available and 27 August 2026 has passed, notify your DNO, install, plug in, and check the app is reporting generation.
Frequently Asked Questions
Are plug-in solar panels legal in the UK?
Not yet. The government's position is that at present these products cannot be sold or used lawfully in the UK, because they do not comply with the Plugs and Sockets etc. (Safety) Regulations 1994 or the Electricity Safety, Quality and Continuity Regulations 2002. SI 2026 No. 848 creates a lawful route from 27 August 2026, but only for a device that meets the final Interim Product Specification and has been verified as compliant on the ENA Type Test Register — registration alone is not enough. No kit had cleared that bar as at our last check. G98 notification to your Distribution Network Operator is mandatory when you connect one. The ESQCR limb extends to England, Wales and Scotland; the Northern Ireland position is still under consideration.
Do plug-in solar panels really just plug into a normal socket?
Yes. A micro-inverter converts the panel's DC output to 230V AC and feeds it into your home through a standard 13A socket. No rewiring or consumer unit work is needed, which is why no electrician is required for installation.
How much do plug-in solar panels cost in the UK?
Complete kits cost roughly £299–£449 for a single 400W panel, £399–£599 for a 600W dual-panel kit, and £499–£949 for 800W systems. Battery-integrated systems cost £1,200–£2,500 depending on capacity — but note that battery-integrated products are excluded from the plug-in route entirely, so they cannot be connected via a plug and need a conventional installation by a qualified electrician.
How much money will a plug-in solar panel save me?
A realistic range is £80–£200 per year depending on system size, orientation, your region, and how much of the generation you use in real time. A well-placed 800W system in southern England used by someone home during the day sits at the top of that range; payback is typically 6–10 years.
Do I need planning permission for plug-in solar panels?
In most cases, no. Freestanding garden and ground-mounted setups rarely need permission, and balcony or wall mounting usually falls within permitted development — though listed buildings, conservation areas, and some flats with restrictive leases are exceptions. Check your lease and, if in doubt, your local planning authority.
Can I get paid for electricity I export?
Realistically, no. The Smart Export Guarantee currently requires MCS certification, which most DIY plug-in installations can't obtain. Treat any exported surplus as free electricity for the grid and focus on using your generation in real time, or adding a battery.