Key takeaways
- • Plug-in solar in Great Britain is limited to a maximum output of 800W.
- • Savings depend heavily on how much electricity you use during daylight hours.
- • Permission may be required if you rent, lease or live in a managed building.
If you have outdoor space, a garden or outbuilding installation usually beats a balcony because you can choose the angle and avoid shading.
Ground mounts
A-frame ground mounts let you set an optimal tilt of about 35 degrees facing south. Ballast the frame with concrete blocks or anchor into the ground, and site it clear of fences, hedges and trees that will shade it as they grow.
Shed and garage walls or roofs
South-facing shed roofs are excellent if the structure can take the load. Check rafters and fixings; a soggy felt roof will not hold a panel through a gale. Wall mounting on a garage is a good compromise where roof pitch is wrong.
Getting the power to the house
A compliant Great Britain plug-in solar device can use a suitable mains socket with the manufacturer-supplied plug. For an outdoor or outbuilding installation, the connection and electrical installation still need to be suitable for the environment. If a new outdoor socket or electrical alteration is required, use an appropriately qualified electrician. Do not use temporary extension leads across a garden. See our socket guide and safety checklist.
Planning notes
Freestanding solar in a domestic garden is generally permitted development within height and siting limits, with tighter rules in conservation areas and for listed buildings. Panels on the front elevation facing a highway attract more scrutiny.
Security
Ground-level panels are visible and portable. Anti-theft fixings and a location out of sight from the street are worth the small extra cost.
Frequently asked questions
Sources
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