Solar panel and plug-in solar FAQs for the UK and Germany
82 questions, answered in plain English and tied to the official source for each. Plug-in solar became legal in England, Wales and Scotland on 27 August 2026, and the rules around it are still moving, so every answer shows when it was last reviewed.
Reviewed · fast-moving answers are re-checked against the official pages listed every week
Rules are changing quickly. Every answer lists its official sources and when it was last reviewed. General information, not legal, electrical or financial advice. See how we check and what has changed recently.
In England, Wales and Scotland, yes, for compliant devices. Since 27 August 2026 a qualifying plug-in solar device can be sold and plugged into a standard socket under SI 2026/848. It is not currently permitted for use in Northern Ireland. A kit is only lawful if it meets the government's specification, so an ordinary solar kit with a UK plug fitted is not automatically legal.
It caps what the inverter can feed into your home: up to 800 VA of apparent power and 3.5 amps. The panels can be rated higher, up to 2,000 W in total under the specification, but the inverter holds the output to 800 W, which manufacturers sometimes call clipping. The specification also says that if the panels add up to more than 960 W, a professional check of your wiring should be considered first.
Do I have to register plug-in solar or tell my network operator?
Yes. The Energy Saving Trust says registering on the UK Plug-In Solar Registration website is a legal requirement, and it needs your name, postcode and the device's make and model. The specification also requires you to notify your network operator when you connect and when you disconnect. Notification under the connection rules is generally due within 28 days of connecting, so register promptly and check the period that applies to your network.
Do I need planning permission for solar panels in England?
Usually not. Domestic solar panels are normally permitted development, meaning no planning application is needed, provided the conditions are met. The permitted development right was updated on 27 August 2026 to cover plug-in solar, with a 12-month transition to 27 August 2027 during which you can follow either the old or the new rules. The conditions differ for houses and blocks of flats.
Do I need planning permission for solar panels in Wales?
GOV.WALES says fixing solar panels to the roof of a single dwelling house is likely to be permitted development, provided they are not above the ridgeline and project no more than 200 mm, with extra conditions for flat roofs and conservation areas. Those rights apply to houses, so flat occupiers are advised to contact their local planning authority. The GOV.WALES guidance does not mention plug-in or balcony solar, so check with your council before fixing plug-in panels.
Possibly, but you need permission first. The Energy Saving Trust advises tenants, leaseholders and residents of managed buildings to get permission from whoever is responsible for the building, such as the landlord, freeholder or building manager, before buying. It says to get explicit permission if you plan to drill into walls or need an external mains socket.
For most homes, installation is currently zero-rated. A 0% VAT rate applies to the installation of energy-saving materials, including solar panels, in residential accommodation in Great Britain from 1 April 2022 and in Northern Ireland from 1 May 2023, until 31 March 2027. The reduced 5% rate is scheduled to return after that unless the government extends the relief. The relief is tied to installation, not to materials alone.
Can I get paid for the electricity plug-in solar exports?
Not normally. Citizens Advice says that under the current rules you cannot be paid for unused power from a plug-in kit, so you use it or lose it. The Energy Saving Trust adds that most suppliers require an MCS certificate before paying under the Smart Export Guarantee, and a plug-in kit will not normally have one, although you can ask your supplier what it offers.
The Energy Saving Trust's checklist, updated 2 September 2026, says plug-in solar panels are not currently permitted for use in Northern Ireland and may follow once regulations are updated.
Plug-in solar becomes legal in England, Wales and Scotland
The Plugs and Sockets etc. (Safety) Regulations 1994 and Electricity Safety, Quality and Continuity Regulations 2002 (Amendment) Regulations 2026 (SI 2026/848) came into force. Compliant devices up to 800 VA can now be sold and plugged into a standard socket.
England's permitted development right for solar updated
The right now covers plug-in solar, with separate limits for houses and blocks of flats and a ban on fixing plug-in solar to timber walls, balconies and enclosures. A 12-month transition runs to 27 August 2027.
