One Month of Legal Plug-In Solar: What's Actually Happened in the UK

It's only been three weeks, but it already feels like a different market. On 27 August 2026, SI 2026 No. 848 made the "plug-in microgenerator" a legally recognised category in the UK for the first time, capped at 800VA/3.5A, sold on a standard BS 1363 plug with a 5A fuse, no battery permitted in the circuit, no extension leads, and one unit per household. It was the culmination of years of campaigning to bring UK rules in line with what Germany, Austria and the Netherlands had already normalised. Now that the initial rush has settled, it's worth taking stock of what has actually changed on the ground, rather than what was predicted on launch day.

This isn't a rehash of the launch day coverage or the first week reaction. It's a month-in check: what's selling, what's going wrong, and what it means if you're still deciding whether to buy.

The retailer picture

Uptake among major retailers was faster than most industry watchers expected. B&Q, Currys, Amazon, Screwfix, Wickes and Lidl all had compliant kits on shelves or online within the first fortnight, a much shorter lead time than the original consultation timeline implied. Screwfix and Wickes leaned into trade and DIY audiences with ground-mount and fence-mount kits, while B&Q and Currys pushed balcony-friendly kits harder, reflecting their more urban customer base. Lidl's entry, as one of its rotating middle-aisle specials, sold out within days at several stores — a reminder that price-sensitive, opportunistic buyers make up a large share of this market.

Pricing has settled faster than expected too. Early fears of launch-week price gouging mostly didn't materialise, and our retailer price comparison shows compliant single-panel kits clustering between £300 and £550, with dual-panel and battery-inclusive kits running £700–£1,200. That's broadly in line with pre-launch estimates, though a genuine bargain is still hit-or-miss depending on the week.

EcoFlow STREAM: the standout launch

No single product has shaped the first month more than the EcoFlow STREAM range, which arrived in UK stores in September, just weeks after the legislation took effect. STREAM's combination of app-based monitoring, tidy cable management and a genuinely portable ground-mount design has made it the reference point other manufacturers are now being compared against, as seen in pieces like our STREAM vs Anker SOLIX RS40P comparison. Availability has been patchy at times — early demand outstripped stock on the more popular kits — but supply has caught up through September.

Where confusion has actually shown up

The single biggest source of friction hasn't been the panels themselves — it's paperwork and provenance. A wave of older, pre-legalisation import kits, originally bought grey-market from EU sellers before the law changed, are now being resold second-hand without clear compliance labelling. Our guide on spotting a non-compliant plug-in solar kit has seen a sharp rise in traffic since launch, which tracks with what we're hearing from readers: plenty of people are unsure whether an inherited or second-hand unit actually meets the 800VA/3.5A spec.

The second recurring theme is DNO confusion — specifically, people incorrectly assuming they still need to submit a G98 notification for a compliant plug-in unit. They don't. The entire point of the 800VA cap is that it sits below the threshold requiring notification. That misunderstanding appears to be inherited confusion from rooftop solar guidance rather than anything specific to the new rules, but it's worth restating clearly: a genuinely compliant plug-in microgenerator does not require DNO paperwork.

The £25m pilot, one month in

The government's £25 million low-income household pilot is still in its early administrative phase. Councils in the initial pilot areas have begun processing applications, but as of mid-September, most participants are still waiting on installation slots rather than generating electricity. It's too early to draw conclusions about the scheme's effectiveness, but application volumes reported so far suggest demand is well ahead of the funded capacity — which may push some applicants towards buying a basic compliant kit outright rather than waiting.

What's changed about the energy maths

None of the underlying economics have shifted much in a month — the Ofgem price cap sitting around 24.5p/kWh means the payback calculation for a typical kit still lands in the same 2–4 year range it did on launch day. What has changed is that buyers now have a month of real generation data to compare against manufacturer claims, and mid-September conditions are still producing respectable output — this is one of the better months to start a system, since you get several weeks of strong fixed generation before the autumn decline sets in properly.

The verdict, one month in

If you were waiting to see whether the legal framework would hold up in practice, a month in, it clearly has. Stock is more available than it was in the first fortnight, prices have stabilised, and the main risks — buying a non-compliant kit, or misunderstanding the DNO rules — are both easily avoided with a bit of reading. If you're still deciding, our complete buying guide and buying checklist are the best starting points before you commit.

Do I still need to register my plug-in solar kit with my DNO one month after legalisation?

No. Compliant plug-in microgenerators within the 800VA/3.5A limit set out in SI 2026 No. 848 fall below the threshold that triggers G98 notification, and that hasn't changed since launch. Only larger, permanently wired systems need DNO notification.

Is it too late to buy before winter, one month after the law changed?

No — mid-September still offers several weeks of decent generation before output drops significantly in October and November. Buying now also means you avoid any residual launch-period stock shortages that affected some EcoFlow STREAM kits in early September.

How do I know if a plug-in solar kit I'm buying second-hand is actually compliant?

Check for clear labelling showing the 800VA/3.5A output limit, a BS 1363 plug with a 5A fuse, and no built-in battery in the plug circuit itself. If any of that is missing or unclear, treat it as non-compliant — see our full guide to spotting a non-compliant kit for the complete checklist.