I have learned to be cautious about political enthusiasm for new technologies. Ministers mention them in passing and nothing follows. This speech was different.
On 21 April 2026, Energy Secretary Ed Miliband used a set-piece speech on clean energy security to name plug-in solar directly, confirm it is heading to UK retailers this year, and point at Germany as the proof that it works at scale. He said the government is "absolutely motoring" on getting kits into British shops.
If you rent, live in a flat, or have watched rooftop solar quietly pass you by, this matters. Here is what he said, and what I would do now.
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Try the free calculator →What Ed Miliband Actually Said
The speech, titled The Era of Clean Energy Security, covered the full sweep of government energy policy. Tucked inside was a passage on plug-in solar that matters to anyone following this space.
"Something I'm really excited about... is plug in solar in outside spaces."Ed Miliband, Energy Secretary, 21 April 2026
A UK Cabinet minister publicly enthusing about a technology we have spent years watching Germans and Dutch balcony owners enjoy. He carried on:
"It offers an incredibly exciting opportunity for consumers to benefit from clean power."Ed Miliband, Energy Secretary, 21 April 2026
Consumers, not homeowners. That word choice matters in a country where roughly a fifth of households rent. He then made the economic case by pointing overseas:
"Half a million families installed it in Germany last year alone."Ed Miliband, Energy Secretary, 21 April 2026
Half a million in one country in a year is not a pilot, it is a market. The next line turns speculation into a timeline:
"We will bring it to the UK later this year and we are absolutely motoring on getting this into the shops."Ed Miliband, Energy Secretary, 21 April 2026
About as close as a minister gets to saying: this is happening, fast. He closed by tying plug-in solar to the security argument running through the speech:
"Every solar panel we put up... makes our country more secure."Ed Miliband, Energy Secretary, 21 April 2026
Full speech on gov.uk: The Era of Clean Energy Security.
Why Germany Matters
Germans installed roughly half a million Balkonkraftwerke (balcony power plants) in 2024 alone. Cumulative installs sit well over a million. In Berlin, you can walk a residential street and count panels on flat balconies, garden fences, and shed roofs.
What unlocked the German market was boring, decisive regulation. Sub-800W systems were brought into a clear product spec, grid paperwork was reduced to a one-page notification, and retailers had a defined standard to stock against. Lidl sold kits between the toasters and power tools. The UK has since done the same. The DESNZ Interim Product Specification (v2.0) was published on 16 July 2026, Ofgem approved the G98 change on 11 August 2026, and SI 2026 No. 848 made plug-in solar legal here on 27 August 2026.
The UK spent years watching from the sidelines. That is the gap the government is now moving to close. Full Germany case study: What Germany's balcony solar boom tells UK buyers.
Why This Matters to UK Households
Three groups have been quietly locked out of the solar transition so far.
Renters. Roughly 20% of UK households rent privately. Rooftop solar requires owning the roof, £6,000+ capital, and a long enough tenure to see payback. None of that fits renters.
Flat dwellers. The roof belongs to the freeholder and getting permission is a slog. Balcony panels, by contrast, attach to something you already have exclusive use of.
Anyone sick of standing charges. You pay it whether you use electricity or not. Plug-in solar does not remove it, but the more of your own electricity you generate, the less the bill structure stings.
A south-facing 800W kit in southern England generates roughly 700 to 900 kWh per year, and the national modelled saving is £124 a year, because you only keep the value of the share you use as it is generated. On the cheapest register-listed kit at £336, with no electrician to pay for, payback is around three and a half years. After that it is effectively free electricity for the 20-plus year panel life. Scenarios are modelled in the renter's guide and the battery analysis.
Compare the kits worth buying
Every kit I write about is one I have researched against the ENA G98 Type Test Register. UK-available, honest pricing, renter-friendly.
Browse UK plug-in solar kits →My Honest View
Upfront: I want this to work. I am a London renter with a south-east balcony and a four-figure annual bill. Faster availability and clearer standards suit me personally.
What this speech changes. It puts plug-in solar on the official roadmap. Retailers now have cover to stock at scale. The Interim Product Specification work, which landed on 16 July 2026, had top-level political backing.
What it does not change. Physics is physics. A north-facing balcony in Aberdeen will not match a south-facing one in Brighton. Poor orientation, heavy shading, or being out of the flat 8am to 7pm reduce the value case. Plug-in solar rewards households that use some electricity during daylight hours.
Where I think this lands. I expect 50,000 to 100,000 UK installs in the year after retail launch, mostly in London, the South East, and big cities. That is far from Germany's numbers, but a tenfold jump from today. Once people on your street have one, the technology normalises fast.
What Happens Next
Based on signals from Ofgem, BSI, and DESNZ, here is what I expect to land in roughly this order:
- DESNZ Interim Product Specification, published as v2.0 on 16 July 2026. It sets the safety specification a kit must meet. The legal change came with SI 2026 No. 848 and Ofgem's approval of the G98 change on 11 August 2026, and both took effect on 27 August 2026.
- Retailer stocking. Expect Screwfix, Toolstation, B&Q, and possibly Aldi or Lidl to widen their range. 20 of the 123 Compliant kits are on sale as at 15 September 2026.
- Battery bundles. Kits with 1 to 2 kWh LFP batteries will outgrow panels-only. They capture midday solar and release it in the evening.
- Cleaner DNO guidance. A sub-800W register-listed kit is self-notified to your network operator after you plug it in, using the simplified consumer form, and the ENA is building a digital journey for it. Plus landlord guidance on the Renters' Rights Act 2025.
I will update this page as each lands. The direction of travel is the clearest it has been in five years.
Should You Wait or Prepare Now?
Start the preparation work today at zero cost. Before buying, check:
- Orientation. South, south-east, or south-west is ideal. East or west works with about 20% less generation. North is not worth it.
- Shading. Walk past the spot at 10am, noon, and 3pm on a clear day. Partial shade on one panel hits generation disproportionately.
- Socket. An outdoor-rated 13A socket within cable reach of the panels.
- Daytime usage. The closer your consumption sits to daylight hours (fridge, router, work-from-home), the more of the generation you actually keep.
- Savings estimate. Run my calculator with your postcode for a PVGIS-based figure. 90 well-spent seconds.
If you want to buy now, start with the ENA G98 Type Test Register, because only a kit that shows as Compliant can be plugged in and self-notified. one hundred and twenty-three kits from twenty-seven manufacturers are listed, 20 are on sale, and the cheapest is £336. The EcoFlow STREAM range is not on the register, so it is not approved to plug in. My product list tracks what is listed.
A Turning Point, If Ministers Follow Through
Political speeches are cheap. What makes this one different is the specificity: a named technology, a named benchmark country, a named launch window, and a named commitment to retail distribution. Combined with BSI work already underway and product availability already on Amazon UK, the momentum is real.
For millions of British renters and flat owners locked out of rooftop solar, this is the clearest sign yet that there is a route in. It is not free, and it will not eliminate your bill. But it is a real, practical, permitted thing you can do from £336 to take a meaningful slice of your consumption off the global energy market.
The maths works. The regulations allow it. The kits exist. The only thing left is a sunny afternoon and a plug.
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Frequently Asked Questions
Yes. Plug-in solar became legal in the UK on 27 August 2026 under SI 2026 No. 848, which amends the Plugs and Sockets Regulations 1994, the ESQCR 2002 and G98, working with the DESNZ Interim Product Specification (v2.0, published 16 July 2026). Ofgem approved the G98 change (DCRP/MP/26/02) on 11 August 2026, with effect from the same date. A kit that shows as Compliant on the ENA G98 Type Test Register may be plugged into an ordinary 13A socket and notified to your network operator afterwards, with no electrician. A kit that is not on the register still needs a CPS-registered electrician and a hardwired connection to your consumer unit.
It already has. Ed Miliband said on 21 April 2026 that the government was "absolutely motoring" on getting plug-in solar into UK shops "later this year", and the route opened on 27 August 2026. As at 15 September 2026, one hundred and twenty-three kits from twenty-seven manufacturers show as Compliant on the ENA G98 Type Test Register, 20 of them are on sale, and the cheapest is £336.
Kits on the ENA G98 Type Test Register use sub-800W microinverters with active anti-islanding and have been type tested against the DESNZ Interim Product Specification (v2.0, published 16 July 2026). Since 27 August 2026 you may set one up yourself, much like any other plug-in appliance, and notify your network operator afterwards. Your home wiring must still meet BS 7671, and you remain responsible for installation safety, insurance and landlord permission. A kit that is not on the register still needs a CPS-registered electrician, typically £250 to £450.
Yes, and since 27 August 2026 without an electrician if the kit shows as Compliant on the ENA G98 Type Test Register. The Renters' Rights Act 2025 protects portable installations that do not alter the fabric of the property. Landlords cannot unreasonably refuse a balcony or garden-mounted kit that simply plugs into an existing socket. I recommend a short, written note to your landlord confirming that the system is portable and will be removed when you leave. See the renter's guide for a full walk-through.
The national modelled saving is £124 a year. A typical south-facing 800W kit generates 700 to 900 kWh a year, but you only save on the share you use as it is generated. The Ofgem price cap unit rate is 26.11p per kWh now and 26.32p from 1 October 2026. On the cheapest register-listed kit at £336, with no electrician to pay for, payback is around three and a half years. After that you have effectively free electricity for the 20-plus year life of the panels. Savings depend on orientation, shading, and how much generation is used during daylight hours. Use my savings calculator for a postcode-specific estimate.