This week’s big story was not a product launch or a price drop. It was a warning shot from the people who wire British homes for a living — and it is worth taking seriously.
Five electrical bodies tell the government to slow down
On 8 June, five of the UK’s most respected electrical safety organisations published a joint statement urging the government to pump the brakes on plug-in solar. The signatories were the Electrical Contractors’ Association, Electrical Safety First, the Institution of Engineering and Technology, NICEIC and SELECT. These are not fringe voices. Between them they represent tens of thousands of qualified electricians, set the training standards for the trade, and helped write the wiring regulations that BS 7671 is built on.
Their message was pointed: plug-in solar should only reach the mass market once the full regulatory, technical and product safety framework is in place. Not before.
They flagged six specific concerns: bidirectional power flow on circuits designed for one-way current, fire risk in older properties, inconsistent product standards, grid resilience at scale, unresolved insurance and liability questions, and the very real possibility that homeowners will connect multiple units via extension leads and adaptors — doing something technically dangerous while thinking they are doing something routine.
The quote that stood out: “A low upfront cost must not override safety.”
Worth noting — this is not a turf war by electricians trying to protect their install fees. The IET, for instance, helped develop BS 7671 Amendment 4, the wiring regulation that made plug-in solar legal in April. They are not opposed to the technology. They are opposed to the timeline.
What the concern is actually about
The core technical issue is one we have covered before on this site, and it is real. Standard UK sockets and the ring-main circuits behind them were designed for power flowing one way: in from the grid, out to your appliances. A plug-in solar system reverses part of that flow. In a modern property with a properly upgraded consumer unit and Type B RCDs, this is manageable. In an older property with ageing wiring and Type AC protection devices, it is less clear-cut.
The joint statement specifically called out that more than half of UK housing stock is over 100 years old. That is a lot of homes where nobody has looked at the consumer unit in years, let alone verified it is ready for a generating source on the circuit.
Electrical Safety First went further, warning that plug-in systems could interfere with RCDs — either causing nuisance tripping or, more worryingly, preventing them from detecting a fault they should catch.
If you are wondering whether your consumer unit is up to it, our Rules and Regulations page covers what to check before you buy anything.
What this means for the July BSI standard
The BSI product standard — the document that will certify specific kits for DIY self-install via a standard 13A socket — is still expected in July. As of this week, there has been no announcement of a delay. The government has not publicly responded to the joint statement.
But the pressure is now visible. If ministers want to be seen to be listening, the July date could slip. If they hold firm, we are on track for certified kits to hit mainstream retail shelves in the late summer, with Lidl and Iceland the expected first movers.
The most likely outcome: the BSI standard publishes on schedule, but the government adds clearer guidance around home electrical assessments before self-install. That would address most of what the trade bodies are asking without delaying the broader rollout.
Watch this space. We will update as soon as there is an official response.
What it means if you are buying now
Practically speaking, nothing about this week’s statement changes what you should do if you are buying a plug-in solar system right now. The correct route has always been: buy a quality kit with a UL 1741 or VDE-certified inverter, have it connected by a CPS-registered electrician via a hardwired fused spur, and submit a G98 notification to your DNO.
The trade bodies’ concern is specifically about DIY self-connection via a standard socket — which is not yet the legal route anyway. That only becomes permissible once the BSI product standard publishes. Until then, the hardwired installation route remains compliant, and it is also the one that addresses most of the concerns raised in this week’s statement.
If you have not had your consumer unit looked at in a while, this is a good week to get it checked. Our Is Plug-In Solar Safe? article covers the specific things an electrician should assess.
Lidl, Iceland and the retail question
The safety warning adds an interesting dimension to the upcoming supermarket launches. Lidl and Iceland were both named as government retail partners in March. Neither has confirmed a launch date. Both were presumably waiting for the BSI product standard before finalising stock.
If the BSI standard slips, or if the government adds more hoops between purchase and plug-in, it changes the retail proposition significantly. A Lidl kit that requires an electrician visit to connect is a different product from one you take home and plug in yourself. The low price point that makes the supermarket route attractive only works if the install is genuinely self-service.
We covered the Lidl launch in detail a few weeks ago — see Lidl set to sell plug-in solar panels for around £400 for the full picture on pricing and timing.
The view from here
The trade bodies are right that some of their concerns are genuine. Older housing stock is a real variable, product quality from unverified imports is a real risk, and extension lead bodge-jobs are absolutely going to happen when this kit reaches Lidl’s middle aisle.
But the joint statement is also — let’s be honest — a statement from organisations whose members charge to install things. The language around timelines and frameworks is legitimate. The framing that positions any self-install solar product as inherently dangerous feels slightly at odds with the fact that Germany has been running over a million of these systems without a wave of house fires.
The right read is probably somewhere in the middle. The BSI standard should publish on schedule. It should include clear guidance about home wiring suitability. Retailers should not be selling kits to people with 1970s consumer units and knob-and-tube wiring without a health warning on the box. And the government should probably commission that consumer guidance now rather than waiting for an incident to force it.
For everything you need to know about the current legal position, see our complete UK plug-in solar guide. And if you are still working out whether your home is ready, the Getting Started guide walks through the checks worth doing before you spend anything.
Quick links
- UK Rules and Regulations — current legal position, G98, BS 7671 timeline
- Is Plug-In Solar Safe? — what to check before buying
- Best Plug-In Solar Kits UK 2026 — what is worth buying right now
- Complete UK Guide — every question answered
- Savings Calculator — what could your system actually save?