Best Plug-In Solar Kits UK: Compliant 800 W Kits Compared

A plug in solar kit is one or two panels, a microinverter and a cable ending in a standard three-pin plug. It has been legal to buy and use in England, Wales and Scotland since 27 August 2026. SI 2026/848 reg. 1 This page compares the kits we could confirm: each one’s AC output, panel size, plug, battery, status on the Energy Networks Association (ENA) register and the price shown in the brand’s own store. We read the prices on 9 November 2026 and the ENA register on the same day. We compare published specifications; we have not tested any kit ourselves.

If you are still working out whether a kit suits your home, start with our plug-in solar guide and the legal guide, then come back here.

The Kits at a Glance

Two points on reading the table. First, “ENA listing” means the device appears on the ENA Connect Direct register of plug-in solar devices with the status “Compliant”. ENA Connect Direct register, 2026 It is a useful check, not a guarantee about your own wall, socket or building. Second, some sellers list the panel wattage but not the inverter’s AC output. Where a listing does not state it, we do not guess.

How We Chose

We kept a kit in the ranking only if the evidence met five tests. Each test comes from the rules, not from a retailer’s marketing.

The Five Tests

1. 800 W AC at most. The law defines a plug-in solar device by a maximum rated AC output not exceeding 800 watts. SI 2026/848 reg. 2(3) The regulations say watts, not volt-amperes, so 800 W AC is the figure we compare.
2. Meets the interim product specification and ends in a BS 1363 plug. The kit must meet DESNZ’s Interim Product Specification v2, and the plug is an ordinary three-pin BS 1363 plug that goes into a fixed BS 1363-2 socket. SI 2026/848 reg. 2(2) and 3(3)
3. No more than 2,000 W of panels. Up to 2,000 W DC of panels can feed an 800 W AC microinverter. SI 2026/848 Explanatory Memorandum §5.1 Every kit in the table is well under that.
4. No battery in the plug-in unit. A plug-in device with a battery is still not permitted. SI 2026/848 reg. 2(3)(e) Systems sold with a battery are covered in the section below.
5. A status we could read. We checked the ENA register and the brand’s own store page. Anything we could not read at source is left out of the table.

We also left out the warranty column. We did not read every warranty in full, and a headline such as “10 years” on a store page does not tell you what is covered.

How We Order Them

The order below follows the data: clear compliance first, then price, then the number of panels you get. It does not follow commission. Some brand buttons on this site may become affiliate links once programmes approve us, and that has no effect on where a kit sits.

The Kits

Octopus Energy Plug-In Solar Bundle, One Panel or Two

Octopus sells two bundles, both with JA Solar 460 W panels, a microinverter, a 5 m cable with a three-pin plug and mounting. A single-panel bundle is 460 W DC at £450 when we checked on 9 November 2026. The two-panel bundle is 920 W DC at £650 on the same date, including VAT and kerbside delivery. Octopus Energy store page, 2026

Who it suits. Anyone who wants the lowest entry price from a known supplier, and who already has, or is switching to, Octopus electricity. Octopus says export payments are available only to Octopus electricity customers with a smart meter who bought the kit from Octopus, so for everyone else this is a self-consumption kit.

What to know. The listing does not state the inverter’s AC output, so we show it as not stated. Each panel is about 1.8 by 1.1 m and weighs about 22 kg, which matters if you plan to hang it on a wall or fence. Octopus told buyers on 9 November that current orders would arrive at the end of November, with a 14-day return window and a £60 collection charge. Octopus also says its kit needs a waterproof outdoor 13 A socket, with no extension lead. That fits the national rule against extension leads. Ofgem decision DCRP/MP/26/02, 2026

Octopus also states that under permitted development you cannot install on fences, gates, walls, balconies or enclosures made of timber. That matches the England planning order, which does not allow installation on a timber wall, balcony or fence. SI 2026/896

Where it falls short. Delivery is slow right now, and the one-panel bundle gives you the smallest array here. Octopus is the only listed supplier we found where the savings case depends partly on being its electricity customer.

Thunder Energy Bolt 460W and Bolt 920W

Thunder Energy’s Bolt kits state an 800 W AC output and a UK plug. On 9 November 2026 the Bolt 460W (one 460 W panel) was £549.99 and the Bolt 920W (two 460 W panels, 800 VA dual-input microinverter) was £749.99, both with free UK delivery. Thunder Energy store page, 2026 The ENA register lists Thunder’s plug-in entries as compliant, including variants for flat roofs.

Who it suits. Buyers who want a clearly stated 800 W AC rating and are happy to buy from a specialist rather than a utility. The 920W gives two panels on one microinverter, which suits a south-facing garden frame or a flat roof better than a single panel does.

What to know. The Bolt 920W comes with a 5 m cable, and a 10 m cable costs £39.99 extra. Check that distance against where your outdoor socket is before you order, because the rules rule out extension leads. Thunder’s page quotes an ENA reference that is older than the entries now on the register; the register shows newer Thunder entries as compliant, so ask Thunder which reference applies to the exact model you are buying.

Where it falls short. It costs more than the equivalent Octopus bundle. Thunder also sells Bolt Plus and Storm Plus systems with batteries; those are not plug-in devices under the rules and are not in our ranking.

EcoFlow STREAM 800W Microinverter Kit, With a Warning

EcoFlow’s STREAM 800W microinverter had a sale price of £549 on 9 November 2026 (normally £678), for the inverter only. Panels are sold separately or in bundles, and bundles with two panels cost more. EcoFlow UK store page, 2026 The ENA register lists EcoFlow entries as compliant, including a flat-roof kit and a second 800 W configuration.

There is a conflict you need to know about before you buy. EcoFlow’s own UK FAQ says that, because of local regulations, the BKW cable used with the STREAM microinverter must be connected to the distribution board by a professional installer or electrician. A plug-in kit is meant to go into a socket. Yet the register lists the kit as compliant.

We cannot reconcile those two statements from the published pages. So we recommend this kit only with a condition: ask EcoFlow how it connects before you buy. Ask whether the version you are ordering ends in a three-pin plug for a fixed socket, or in the BKW cable that needs an electrician. If it is the second, it is not a plug-in kit in the sense of this guide, and installation costs belong in your sums.

Who it suits. People who already want EcoFlow’s app and monitoring and are prepared to confirm the connection first. Where it falls short. The price is for the inverter alone, so a working array costs more, and the connection question is unresolved.

Zendure: Listed, but Not for Sale Here

The ENA register has six Zendure entries for “SolarFlow 800” with two panels, all marked compliant. On 9 November 2026, Zendure’s UK store did not sell that product. It sold only battery systems, which fall outside the plug-in regime. ENA Connect Direct register, 2026 We do not rank a kit you cannot buy. Zendure’s systems are covered in our guide to what each brand sells in the UK.

Also on the ENA Register

Several other companies have compliant plug-in entries on the register as of 9 November 2026, including Perlight, City Plumbing, Worldwide Solar and PatioSun. ENA Connect Direct register, 2026 We have not yet read their store pages, so we show no prices and do not rank them. Check the model, plug and AC rating on the seller’s page, and make sure the exact kit you want matches the register entry.

Not every entry is compliant: the same register shows some non-compliant plug-in entries. That is why we check the register rather than relying on a seller’s claim.

800 W Solar Panel Kits: What 800 W Means

The “800 W” on a kit is the maximum AC output of the microinverter, not the size of the panels. SI 2026/848 reg. 2(3) A kit with two 460 W panels has 920 W of panels, but never puts more than 800 W into your home. Panels rarely hit their rated output anyway: angle, shade, temperature and cloud all pull the real figure lower.

Some sellers also write “800 VA” because the DESNZ product specification talks about apparent power. The law uses watts, and that is the figure to compare. For a rough idea of what that runs, DESNZ says a kit can power a typical fridge, television, Wi-Fi router, laptop, phone charger and an Xbox S together while the sun is out. DESNZ news, 26 Aug 2026

More panels on the same microinverter help in poor light, because the inverter reaches its limit earlier in the day. They do not raise the cap. If you want to see how a bigger array changes your result, try the plug-in solar calculator.

What the Price Buys

At the prices we read, a single-panel kit starts at £450 and a two-panel kit at £650. DESNZ said households could save up to £110 a year, a ceiling rather than an average. DESNZ news, 26 Aug 2026 Payback therefore depends on your own sun and daytime use, and we do not give a single figure here.

Kits for Flats and Renters

A kit that suits a back garden may not suit a flat. Check three things before you buy.

Weight and Fixing

A 460 W panel of the Octopus type weighs about 22 kg and is about 1.8 by 1.1 m. Two of them on a balcony rail or fence is a real load. The product specification requires mounting that is reversible and not permanent, and rules out ACM, MCM, HPL and timber cladding, timber balconies and buildings undergoing external wall remediation. DESNZ interim product specification v2, §8.3.2, 2026 If you do not know what your building is clad in, ask before you order.

Permission

No law gives a tenant the right to install a plug-in kit. The specification makes manufacturers warn users that they are responsible for getting any permissions needed from the owner, landlord, freeholder or managing agent before installation. DESNZ interim product specification v2, 2026 A one-panel kit is easier to ask for and easier to take down when you move.

Kits Sold With a Battery

Several brands sell a plug-in style kit with a battery. Under the regulations, a plug-in solar device with a battery connected through the plug is still not permitted. SI 2026/848 reg. 2(3)(e) That is why Thunder’s Bolt Plus and Storm Plus systems and Zendure’s SolarFlow 2400 and 3680 range are not in our ranking.

Some sellers separate the battery from the plug-in unit and describe the result as a fitted system. That is a different product with different rules, and the seller’s own installation instructions may call for an electrician. Our guide to plug-in solar with a battery explains what we know and what we could not confirm.

Where to Buy

DESNZ named Currys, B&Q, Screwfix and Amazon as retailers that worked with the government on the rollout, and said Argos and Wickes have committed to stocking plug-in solar. DESNZ news, 26 Aug 2026 Stock varies by shop and online.

Whoever you buy from, check four things on the listing before you pay:

• A statement that the kit meets the interim product specification v2.
• The AC output, in watts, and that it does not exceed 800 W.
• A standard three-pin plug in the box, with no adaptor.
• The exact model name, so you can match it to an entry on the ENA register.

The brand’s own store is often the cleanest place to buy, because the model and the register entry are the same product. We show prices from those stores, each with the date we read it, and we do not print retailer prices for stock we have not seen.

After You Buy

Buying the kit is not the end. Before you use it, you register it on myplugin.solar with your name, your postcode and the make and model. Electricity North West, plug-in solar, 2026 There is no 28-day grace period after you plug in. ESQCR 2002 reg. 22(2)(c) It is one kit per home, plugged into a fixed wall socket, never an extension lead. In England, the planning change that came with the electrical one makes most installations permitted development, with limits on how far panels stick out from a wall and exceptions for listed buildings and conservation areas facing the road. SI 2026/896 For Scotland and Wales we could not confirm an equivalent planning rule, so ask your local planning authority.