Last reviewed: 5 September 2026. UK requirements are from SI 2026/848 and the DESNZ Interim Product Specification version 2.0 (July 2026). The German material is included as context and comparison, not as advice on German law — if you live in Germany, take German advice. Germany has had legal, mass-market balcony solar for roughly a … Read more
Last reviewed: 4 September 2026. Figures and legal points checked against primary sources (legislation.gov.uk, gov.uk, DESNZ, the Energy Networks Association and Ofgem). Where a number comes from our own calculation rather than a government document, we say so. These are not two sizes of the same product. A plug-in kit is an appliance: 800 VA … Read more
Last reviewed: 4 September 2026. Sun angles and day lengths in the table are our own calculations from latitude and solar declination, rounded; product requirements are from the DESNZ Interim Product Specification version 2.0 (July 2026). Expect very little, and plan around it. Between November and February a plug-in solar kit in Britain produces a … Read more
Last reviewed: 4 September 2026. Figures and legal points checked against primary sources (legislation.gov.uk, gov.uk, Ofgem and the relevant network operator). Last reviewed: 3 September 2026. This page cites the statutory instrument and the regulations it amends, and nothing else. Where a date or a limit comes from the government’s specification rather than from the … Read more
Last reviewed: 4 September 2026. Figures and legal points checked against primary sources (legislation.gov.uk, gov.uk, Ofgem and the relevant network operator). Last reviewed: 3 September 2026. Every figure on this page is taken from the statutory instrument, the government’s Interim Product Specification or the DESNZ impact assessment, each of which is linked below. Where a … Read more
Last reviewed: 4 September 2026. Northern Ireland has its own network operator, its own connection standard and its own building control, so this page is written separately rather than adapted from the Great Britain guidance. Plug-in solar kits can be sold and used in Northern Ireland, but almost every practical detail differs from England, Scotland … Read more
Last reviewed: 4 September 2026. Yield figures are our own rounded estimates built from the public 750–1,050 kWh/kWp range for the UK, and every assumption is stated on this page. They are not MCS figures and should not be used for a warranty claim. An 800 W plug-in kit in the UK generates somewhere between … Read more
Last reviewed: 3 September 2026. The technical requirements on this page are quoted from the DESNZ Plug-in Solar Device Interim Product Specification, version 2.0, July 2026. Generation figures are our own estimates, and we say so where they appear. Disclosure: this article discusses products we may link to commercially elsewhere on the site. Some retailer … Read more