3 guides · updated 22 October 2026
Plug-In Solar in the UK: Rules, Kits and Savings
Great Britain legalised plug-in solar on 27 August 2026, with some of the strictest product rules in Europe: an 800 W limit, a special fused plug, no extension leads and a mandatory notification to your network operator. These guides are written for UK readers, in pounds and British English.
UK guides
Legal since 27 August 2026: the 800 W rules explained.
UK4 min readPlug-in solar is now legal in the UK: what changed on 27 August 2026Plug-in solar became legal in Great Britain on 27 August 2026. The 800 W limit, the special plug, DNO notification, where you can't install it and what it saves.Read guide UK2 min readHow to buy a legal plug-in solar kit in the UKWhat makes a plug-in solar kit legal in Great Britain: 800 W limit, fused BS 1363 plug, ENA register, no batteries or adaptors. Check these 8 points first.Read guide UK2 min readHow much does plug-in solar save in the UK?An 800 W plug-in solar kit saves about £60 to £130 a year in the UK at the 26.32p price cap. Savings by region and direction, payback, export and how to use more.Read guide