What plug-in solar costs in the UK right now
Compliant UK plug-in solar kits cost between about £400 and £1,300 as of September 2026. The cheapest widely available option is the Octopus Energy single-panel bundle at £450, including VAT and delivery, with a two-panel bundle at £650. Argos kits start at £599. Specialist sellers fill the gap in between, and the most expensive single kit currently listed is £1,299.
Two rules shape everything you can buy: every kit is capped at 800W of AC output, and UK households may connect one plug-in solar device in total — not one per circuit, one per household.
Octopus Energy — £450 for a single 460W panel (£650 for two), including VAT and delivery. Argos — from £599 for UKSOL kits, the first retailer to actually list compliant plug-in solar online.
UK prices compared, seller by seller
These are the listed prices for complete, ENA-registered kits. Prices move weekly as ranges expand, so treat this as a September 2026 snapshot rather than a permanent price list.
| Seller | Kits listed | Price range | Notes |
|---|---|---|---|
| Octopus Energy | 2 bundles | £450 – £650 | 460W per panel; VAT & delivery included; delivery by end Sept 2026 |
| Argos | 5 – 6 kits | from £599 | UKSOL models; cheapest is the 515W Pro Compact with hybrid mount |
| 1st Plug In Solar Ltd | 12 kits | £459.98 – £1,199 | Resells Thunder, Perlight and UKSOL |
| PatioSun | 5 kits | £399 – £729 | Lowest entry price currently listed in the UK |
| City Plumbing | 5 kits | £648 – £951.60 | Trade-focused; ground mounts |
| Modular Solar | 2 kits | £465 – £650 | |
| Amazon | 2 kits | £465 – £650 | Range still limited — check model numbers carefully |
| Thunder Energy | 2 kits | £549.99 – £749.99 | Bolt 460W and Bolt 920W |
| UKSOL (direct) | 2 kits | £699 – £1,089 | Click & collect available |
| Crampton & Moore | 1 kit | £1,299 | Most expensive single kit listed |
One or two 460W bifacial panels (about 1.8m × 1.1m and 22kg each), a micro-inverter, a choice of wall or floor mount, and a 5-metre cable with a standard 3-pin plug. Octopus customers can track generation in the Octopus app. The two-panel bundle sits right at the 800W AC cap. Delivery is expected by the end of September 2026.
Who is actually selling them today
Most of the big names have committed to plug-in solar, but committing and stocking are different things. Here is the real state of play.
| Retailer | Status (September 2026) |
|---|---|
| Octopus Energy | On sale — delivery by end September 2026 |
| Argos | On sale online — first UK retailer to list compliant kits |
| Amazon | On sale — limited range so far |
| City Plumbing | On sale |
| B&Q, Currys, Screwfix | Committed and working with government; ranges not yet launched |
| Wickes | Confirmed products arriving "in the coming weeks" |
| Lidl | Announced intent to stock; no confirmed range or date yet |
Almost 150,000 certified solar installations were completed in the first half of 2026, up 17% on the previous record start to a year — the equivalent of one every 74 seconds. Battery installs reached about 36,000 over the same period, nearly double last year. Plug-in solar has arrived into a market that is already moving fast.
How to check a kit is legal before you buy
Check the exact manufacturer and model number against the Energy Networks Association's Connect Direct register before you pay. Only complete systems assessed against the government's interim product specification, and registered on that list, can legally be plugged into a UK socket.
These checks matter more than they sound, because the obvious signals are not proof:
- A UK three-pin plug is not proof. Plenty of imported kits have one and still are not compliant.
- "G98 compatible" is not proof. The kit must be assessed as a complete system against the interim specification — covering the inverter, plug, cable, electrical protection, labelling and instructions.
- European balcony kits cannot legally be connected here. Adding a travel adaptor or swapping the plug to a UK one does not make an imported system compliant. Germany's rules are less strict than the UK's.
- Battery-integrated plug-in systems are not covered by the new rules at all.
- Do not use extension leads, multi-way adaptors or plug-in RCD adaptors in place of the manufacturer's own connection.
One rule that catches people out: even where a property has several separate electrical circuits, the G98 rules limit households to one plug-in solar device overall. You must also notify your Distribution Network Operator after connecting — the revised G98 route is designed to let you do this yourself without an installer.
The new plug-in solar rules apply to Great Britain — England, Scotland and Wales. Northern Ireland runs a separate electricity safety regime, and plug-in solar is not currently legal there.
Where it is cheapest — and the traps
Two things push the sticker price around: panel wattage and what is bundled in. A £399 kit and a £650 kit are frequently not the same product.
Check what is included. Some listings are the panel alone; you then buy a micro-inverter, mounting hardware and cable separately, which can easily add £100–£200. Octopus bundles everything, which is a large part of why its pricing looks competitive.
Watch the per-watt price. The most useful comparison is cost per watt of panel capacity. The Octopus two-panel bundle works out at roughly £0.71 per watt, against about £0.98 per watt for the single-panel bundle — the dual kit is meaningfully better value per watt if you have space.
The UK is still expensive. The same class of hardware sells for around £0.20 per watt in Germany, against roughly £0.71 per watt for the best-value kit verified here — the Octopus two-panel bundle, which works out at £650 for two 460W panels. Not a perfect comparison — German kits often exclude the frame, and Germany applies 0% VAT where Britain only does so on supply-and-install — but the gap is real. UK prices should fall as ranges broaden.
Check permissions before ordering. You may need landlord, freeholder or managing agent permission, and in some cases planning permission or listed building consent. Sorting this out first avoids a return shipping fee.
Is it worth it? Payback maths
The government estimates households can save up to £110 a year, with a kit providing up to 20% of an average home's electricity use. Octopus Energy estimates £50–£150 a year for its bundles.
On the £450 single-panel bundle, that range implies a payback of roughly 3 to 9 years — a wide spread, and the variable that matters most is how much of your usage you shift into daylight hours. Plug-in kits have no battery, so electricity generated while you are out is exported or lost rather than stored.
That makes plug-in solar a good fit if you are home during the day, work from home, or can run washing machines, dishwashers and immersion heaters while the sun is up. It is a poor fit if your home is empty from 8am to 6pm and you have no way to shift load.
On export: you cannot assume a Smart Export Guarantee payment. Octopus states that SEG tariffs do not apply to its plug-in systems, though Octopus customers who bought a bundle can access its own Outgoing Prime export tariff. If export income matters to your numbers, confirm the position with your supplier before buying.
FAQs
Where can I buy plug-in solar panels in the UK?
Octopus Energy and Argos are the two biggest names selling compliant kits today — Octopus from £450 and Argos from £599. Specialist sellers including 1st Plug In Solar, PatioSun, City Plumbing, Modular Solar and Thunder Energy also list compliant kits. B&Q, Currys, Screwfix and Wickes have confirmed they will stock plug-in solar, but had not launched full ranges as of September 2026.
How much do plug-in solar panels cost?
Between roughly £400 and £1,300 for a compliant complete kit as of September 2026. The cheapest widely available option is the Octopus single-panel bundle at £450 including VAT and delivery; Argos starts at £599.
Do I need an electrician to install plug-in solar?
No. Compliant kits are designed to be set up by the householder — mount the panel, connect the micro-inverter, plug the supplied cable into a suitable socket. There is no hardwiring and no installation cost. You do still need to notify your DNO afterwards, and you should check your socket and property are suitable first.
Can renters buy plug-in solar?
Yes, and renters are one of the main groups the rules are designed to help. You may still need permission from your landlord to mount panels on a wall, balcony or in the garden. Because the kit unplugs, you can take it with you when you move.
Why is plug-in solar so much cheaper in Germany?
Germany has had balcony solar for years, so volumes are far higher and prices have fallen to around £0.20 per watt. Germany also applies 0% VAT to the hardware, where the UK's 0% rate applies to supply-and-install rather than standalone kits. UK prices are expected to fall as more retailers launch ranges.
How much electricity does an 800W kit generate?
A typical 800W kit generates roughly 700–800 kWh a year in southern England, falling to around 550–600 kWh in Scotland. Output is concentrated between April and September and is minimal in midwinter.
How do I check a plug-in solar kit is legal in the UK?
Check the exact manufacturer and model against the Energy Networks Association's Connect Direct register before you buy. Only complete systems assessed against the government's interim product specification and registered on that list can legally be plugged into a UK socket. A kit having a UK three-pin plug, or being advertised as G98 compatible, is not enough. European balcony solar kits cannot legally be connected to a British socket even with a travel adaptor.
How many plug-in solar panels can I connect to my house?
One plug-in solar device per household in total. Each individual device is capped at 800W of AC output. The government's product specification allows one device per household electrical circuit, but the G98 network rules approved by Ofgem restrict households to a single plug-in solar device overall, even if the property has several circuits. You must also notify your Distribution Network Operator after connecting it.
Does the UK plug-in solar law apply in Northern Ireland?
No. The new plug-in solar rules apply in Great Britain — England, Scotland and Wales. Northern Ireland operates under a separate electricity safety regime, so plug-in solar is not currently legal there.
How much can I save with plug-in solar?
The government estimates households can save up to £110 a year, with a kit providing up to 20% of an average home's electricity use. Octopus Energy estimates £50 to £150 a year for its bundles depending on siting and how much of your usage overlaps with daylight generation. Savings depend heavily on running appliances while the sun is shining, because plug-in kits have no battery storage of their own.
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Open the savings calculatorSources: Department for Energy Security and Net Zero press release, "Households can save as plug-in solar panels come to market" (26 August 2026); Octopus Energy plug-in solar product pages (September 2026); Energy Networks Association Connect Direct register; MCS installation statistics for H1 2026; UK plug-in solar kit price tracking (read 7 September 2026). Prices and retailer availability change frequently.
Disclaimer: this guide is for general information only and is not electrical, legal, financial or purchasing advice. Always confirm the exact model is listed on the ENA Connect Direct register before buying, and check your property, socket and any required permissions. Prices change without notice.