Only kits assessed Compliant on the ENA register, with the price each retailer showed on 11 November 2026. Use it as your baseline: a Black Friday price is only a deal if it beats this.
Affiliate links: if you buy through a link on this page we may earn a commission, at no extra cost to you. It never changes what we list. Full disclosure
Every plug-in solar kit on this page is assessed Compliant on the ENA register, so it's legal to plug into a socket in Great Britain. We've listed the price we saw at each UK retailer on 11 November 2026. That gives you a baseline, so you'll know a real Black Friday deal when it lands.
We'll update this page through Black Friday week
Black Friday is 27 November 2026 and Cyber Monday is 30 November 2026. We'll recheck every listing and the register during that week and change the date on each row when we do. Until then, every figure below is the pre-sale baseline, not a Black Friday one.
The short version
This is the first Black Friday for legal plug-in kits. The route opened in Great Britain on 27 August 2026, under SI 2026 No. 848, so no kit has a price history yet. Our 11 November 2026 prices are the closest thing to one. The government expects kits to sell for £400 to £600, so anything in that range is normal, not a special offer.
Compliant kits we could check ran from £399 (Solarfy Solo 455) to £1,320 (UKSOL Pro Duo 890W (ground mount)) before any sale.
Buy only a kit whose ENA register reference you can match. 145 devices were Compliant at our latest register check on 13 November 2026.
Anything with a battery isn't a plug-in kit. It needs an electrician and a G98 notification, so we list battery deals separately below.
The best UK plug-in solar kits on the register
23 register-Compliant kits with a live listing, cheapest first. Each figure is what the retailer's page showed on the date in the row. Amazon prices are never shown here: follow the button and check the listing. Where a row says “check listing” for another retailer, we couldn't read a price on our last check.
Kit
ENA register ref
Where to buy
Price seen
Seen
Solarfy Solo 455
£399 with a 2m DC cable and flat mount included; £424 for 5m or £449 for 10m. No-mount options are £359, £384 and £409. In stock. Free two-person delivery across Great Britain (not Northern Ireland), in 5 to 8 working days.
Single-panel bundle, launch price including delivery. Octopus's pages name no model; matched to its only register record. Order today and we're aiming to get your Plug-in Solar bundle to you by the end of November. We'll be in touch to confirm your delivery date.
£549 with a 2m DC cable and flat mount included; £574 for 5m or £599 for 10m. No-mount options are £509, £534 and £559. In stock. Free two-person delivery across Great Britain (not Northern Ireland), in 5 to 8 working days.
Two-panel bundle, launch price including delivery. Octopus's pages name no model; matched to its only register record. Order today and we're aiming to get your Plug-in Solar bundle to you by the end of November. We'll be in touch to confirm your delivery date.
Part number UKS-C1-460-MZ1-UKG, but the listing's manufacturer model field reads UKS-PRO-C-1-515-MZ1. Confirm the model with City Plumbing before buying.
Argos titles this bundle 'ground mount'; its description and model code (UKS-PRO-M-2-1260-MZ1) are the hybrid-mount kit on the register. The page still shows a stale late October delivery estimate.
Part number UKS-D2-890-MZ1-UKG, but the listing's manufacturer model field reads UKS-PRO-D-2-890-MZ1 (the hybrid-mount code). Confirm the model with City Plumbing before buying.
Replaces the plain modular.solar/buy-online link. One listing covers both units; pick the 340W variant. The register has two 340W records (this and a later one with a 400W inverter); the listing doesn't say which.
Screwfix code 396MG, delivered by PowerXpress. The listing shows no model code; its contents (two 460W panels and an 800W microinverter) match PowerXpress's only register record.
Every kit in this table outputs at most 800VA through a standard socket. That's the cap on the solar inverter, whatever the solar panel wattage. The register also lists Compliant kits we couldn't find on sale; they're on our certification tracker.
Which deals to watch
High-street returns: Argos sells four UKSOL hybrid-mount kits. You pay more for the panel capacity than direct sellers charge, and get Argos returns in exchange. See our UKSOL review.
Two panels for less: PatioSun Duo, Octopus's two-panel bundle and the PowerXpress 920W kit are the two-panel kits to watch. A balcony solar kit rarely fills an 800VA inverter with one panel.
Garden or flat roof: Thunder's Bolt range and Solarfy's kits are sold for gardens, walls and flat roofs. Solarfy's cost changes with the cable length you pick, and Thunder charges extra for some bracket options, so compare every feature you're paying for, not just the headline figure.
How to spot a fake Black Friday deal
The first Black Friday in a new category is when look-alikes and inflated “was” prices do best. Five checks, in order.
1. Match the register reference and the maker, not just the model code
Model codes aren't unique. On 29 October 2026 the code M1-800-E appeared twice: once as OCTOQ/21124/V1/A5 from Octopus Energy, assessed Compliant, and once as AOROE/21759/V1 from a different company, aoro energy ltd, marked Non-compliant on 12 October 2026. On 13 November 2026 the AOROE record was not returned. The Octopus record was still Compliant. A listing that quotes the model code alone proves nothing. Find the full reference, check the manufacturer matches the seller's brand, and look it up on the ENA register or our compliance checker. Our guide to telling whether a kit is legal walks through it.
2. Treat Amazon look-alikes with suspicion
Amazon's “balcony solar” results mix a few register-Compliant kits with many that carry no GB register reference at all. A CE or UKCA mark doesn't make a kit legal to plug in here. The only Compliant kits we have matched to an Amazon listing are Modular Solar's units, which are in the table above. If an Amazon listing doesn't show a register reference you can check, skip it, however good the stars look.
3. Check the “was” price against our baseline
With no history to go on, a “was” figure is usually a launch list price nobody paid. Compare the Black Friday offer with our table instead. Battery systems show the gap clearly: EcoFlow listed the STREAM Ultra at £699 against £1,399 on 11 November 2026, weeks before Black Friday. The same discount in late November isn't a new deal.
4. Compare the same kit, same mount, same cable
Retailers sell one register entry in several baskets. UKSOL sells hybrid and ground mounts as separate kits with separate references. Solarfy charges more for a longer cable. Thunder sells bracket upgrades as add-ons. Cost the exact basket you need at every retailer on the same day.
5. A battery in the box means a different route
A kit sold with a battery is excluded from the plug-in route, even if the panels and inverter are the same. Some “balcony” kits without a battery still aren't sold as plug-in devices: read the listing's own installation section. If it says an electrician must connect it, it isn't a plug-in deal. Our explainer on why batteries are excluded has the detail.
Battery systems (not plug-in)
A solar system with a battery needs a qualified electrician and a G98 notification, so these aren't plug-in kits and they're not in the table above. Figures are the maker's own, read on 11 November 2026.
Are there Black Friday deals on plug-in solar in 2026?
This is the first Black Friday since plug-in solar became legal in Great Britain on 27 August 2026, so there's no history to compare with yet. We'll recheck every kit in this table during Black Friday week, from 27 November 2026.
How much does a plug-in solar kit cost in the UK?
Compliant kits we could check cost £399 to £1,320 on 11 November 2026. The government expects kits to sell for £400 to £600.
Is plug-in solar legal in the UK?
Yes, in Great Britain, since 27 August 2026, if the kit is assessed Compliant on the ENA register. You can run one device per household, and you need to register it.
Can I buy a plug-in solar kit with a battery?
You can buy one, but a kit with a battery isn't on the plug-in route. It needs a qualified electrician and a G98 notification.
Affiliate links: if you buy through a link on this page we may earn a commission, at no extra cost to you. It never changes what we list. Full disclosure