50 Compliant Plug-in Solar Kits Now Listed for Sale as UK Prices Begin to Fall

The new plug-in solar rules came into force on 27 August 2026. During the first few weeks, the choice of kits was relatively limited, prices were often high, and stock availability was a recurring problem.

But the market is developing quickly. More suppliers are introducing compliant equipment, major retailers are expanding their ranges, and some of the first significant price reductions are beginning to appear.

This week alone, Solarfy has reduced both kit prices by £50, Worldwide Solar has cut prices across five kits, Voltacon has introduced a two-panel kit without mounting for under £400, and City Plumbing has finally listed its long-awaited dual-MPPT HiFlow PRO models, although both are currently out of stock.

It's welcome news for anyone considering plug-in solar, with 25 of the 50 retail-listed kits now priced under £500, although not all are currently in stock.

Eight weeks of rapid market growth

Since the new rules came into force, we've been monitoring the official ENA Type Test Register, matching approved configurations to UK retail listings, and tracking their prices and availability.

Our directory's recorded retail-listing totals show how quickly choice has expanded since launch:

The number of kits with UK retail listings has grown tenfold, from just five at launch to 50 today. And there are plenty more potentially on the way, with 127 plug-in solar configurations now marked as compliant on the official ENA Type Test Register. From what we've observed so far, there's often a wait of several weeks between a kit receiving ENA approval and actually becoming available to buy.

Of course, being listed for sale doesn't always mean you can get hold of one. Of the 50 kits for sale today, only 30 are showing as in stock at the time of writing. But there's no doubt that buyers now have far more choice, with a growing range of suppliers, panel sizes and mounting options.

What are the best value plug-in solar kits for sale right now?

Some of the most interesting options are now priced below £500, but the right kit will depend on your available space and how you plan to position the panels. Here are a few that stand out. All prices include delivery.

Single-panel kits

These ENA-approved kits are all showing as in stock, and include one solar panel, a microinverter, cables and mounting equipment. They're a good starting point if you're short on space or don't need a larger two-panel system.

• City Plumbing DMEGC 475W Plug-In Solar Kit – £336. Still the cheapest complete compliant kit available, with adjustable mounting included.
• City Plumbing DMEGC 525W Plug-In Solar Kit – £360. Just £24 more than City Plumbing's 475W kit for an extra 50W of panel capacity. If you can only install one panel, this would be our pick, provided you've got room for the larger panel.
• Solarfy Solo 455W Plug-in Solar Kit – £399, recently reduced from £449. Includes a bifacial panel and fixed 20° mounting frame.

Two-panel kits

Two-panel kits offer more generating capacity, with a growing selection of single and dual-MPPT microinverters. Dual-MPPT models can manage each panel independently, which is particularly useful when panels face different directions or experience different levels of shading.

• City Plumbing DMEGC 950W HiFlow Kit – £456. Two 475W panels, single-MPPT inverter and adjustable mounting.
• City Plumbing DMEGC 1050W HiFlow Kit – £480. Just £24 more than the 950W kit for an extra 100W of panel capacity, with two larger 525W panels, a single-MPPT inverter and adjustable mounting.
• Solarfy Duo 910W Plug-in Solar Kit – £549, recently reduced from £599. Includes two 455W bifacial panels, a dual-MPPT inverter and fixed 20° mounting frames. If dual-MPPTs are important, this is currently the cheapest complete dual-MPPT kit showing as in stock.

All three kits are currently showing as in stock and available to order.

City Plumbing has also launched two new dual-MPPT HiFlow PRO kits today, although both are currently out of stock:

• City Plumbing DMEGC 950W HiFlow PRO Kit – £480. Two 475W panels, dual-MPPT inverter and adjustable mounting.
• City Plumbing DMEGC 1050W HiFlow PRO Kit – £504. Two 525W panels, dual-MPPT inverter and adjustable mounting.

If you're positioning both panels together, facing the same direction and receiving similar sunlight, the cheaper single-MPPT kits may be perfectly adequate. But if you do want dual-MPPT, it could be worth holding out for stock to arrive for these two new City plumbing PRO kits. At £480 and £504, both are cheaper than Solarfy's £549 Duo, despite offering more panel capacity and adjustable mounting. The only catch is availability, and there's no guarantee prices will remain the same when stock returns.

Mount-free kits

Mount-free kits include the panels, microinverter and connecting cables, but no mounting equipment, which often makes them cheaper than complete kits. You'll need to purchase a suitable mounting system separately, though, so be sure to factor that into the overall cost.

• Voltacon 930W Hoymiles HF-800-WB Plug-In Solar Kit – £399. Two 465W JA Solar panels and a single-MPPT Hoymiles inverter. One of the lowest-priced compliant two-panel packages we've found.
• Worldwide Solar 1070W Plug & Play Solar Kit – £435, reduced from £455. Two 535W bifacial panels and a dual-MPPT Hoymiles inverter.

Worldwide Solar has also reduced four other mount-free kits by £20 this week, including its 920W kit (now £434) and 1220W kit (now £464).

Why are plug-in solar prices starting to fall?

It's too early to establish whether the overall UK market is experiencing a sustained decline in prices, but several recent reductions suggest that suppliers are beginning to respond to changing market conditions.

There are a few possible explanations.

Increasing competition

When plug-in solar first became legal in Great Britain, buyers had relatively few compliant products to choose from.

That situation is changing quickly. New suppliers have entered the market, established retailers are expanding their ranges, and buyers can now compare multiple kits with similar capacities and specifications.

Greater competition could put pressure on suppliers to offer more attractive prices.

Seasonal demand

We're also approaching winter, when shorter days and reduced sunlight mean plug-in solar systems generate considerably less electricity than during spring and summer.

Demand for solar equipment may soften during these months, potentially encouraging suppliers to introduce discounts to maintain sales.

Early-adopter pricing

It's also possible that some suppliers initially priced their products higher because competition was limited and early adopters were prepared to pay a premium.

As the market develops and consumers become more familiar with the technology, those prices may become harder to sustain.

Should you buy a kit now or wait until winter?

If you're not in a hurry, it could be worth holding out for another month or two. There are still 77 ENA-approved kit configurations that haven't reached retail yet, so we expect more choice and potentially more competitive pricing as new products arrive over winter.

That said, we think under £500 for a complete, compliant two-panel kit represents good value, particularly when it includes a decent microinverter and adjustable mounting equipment. At that price, there's a good chance of achieving a reasonable payback period, especially if you can use most of the electricity you generate.

Our advice? Don't feel pressured to buy immediately, but don't get too caught up in waiting for the absolute lowest price either. If you find a suitable kit at a fair price, there's a good argument for going ahead rather than holding out indefinitely.