UK plug-in solar update: what happened in June 2026?
This page is kept as a dated record of the consultation and safety-study stage. The consultation has since concluded, the final product specification has been published and the new rules are due to come into force on 27 August 2026.
Looking for the current rules?
Read UK plug-in solar becomes legal on 27 August 2026 or the permanent legal guide. This article is intentionally preserved as history rather than rewritten as though the consultation never happened.
What happened in June?
On 16 June 2026 the government launched its plug-in solar consultation, published the proposed Interim Product Specification and released a substantial electrical safety study.
That was the point where the UK moved from broad political announcements into actual technical proposals.
The safety study was important
Representative plug-in PV systems were tested against simulated UK domestic circuits and fault conditions.
The government's study concluded that plug-in PV could operate safely under the tested conditions, with stable behaviour and effective protective-device operation. It also found variation between products, particularly in areas such as export limitation and electromagnetic compatibility.
That evidence helped support the case for a specific UK product standard rather than simply allowing any European balcony-solar kit onto the market.
What was proposed at the time?
The June consultation proposed a tightly controlled consumer product with an 800VA-scale output, UK plug requirements, electrical protection, mounting requirements and clear instructions for householders.
At the time, many details were still consultation proposals rather than final rules.
What changed afterwards?
Government published its consultation response and the final Interim Product Specification in July 2026. The final framework refined several points and confirmed the route for compliant solar-only products.
The final rules now include the complete-product approach, manufacturer-supplied BS 1363 plug with 5A fuse, 800VA/3.5A AC limits, up to 2,000W of connected PV modules and detailed circuit/protection guidance.
Battery products remain outside the plug-in solar IPS.
Why keep this page?
Because people will continue finding June articles through Google and old links. Deleting the page would throw away useful search history and remove context.
The better approach is to keep the dated article, clearly mark it as superseded and direct readers to the current final rules.
This is an archive page. For installation or buying decisions, use the current 2026 guides linked above.