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.
Fifteen minutes of checks before you order saves most of the problems people report afterwards.
The site
Watch your intended location across a sunny day and note when it is shaded. Measure the space, check the railing or wall type, and confirm the direction it faces with a phone compass.
The permissions
Landlord, freeholder or managing agent consent in writing. Conservation area or listed status if relevant.
The product
- Inverter output and G98 certificate
- Panel certification and dimensions
- Mounting hardware included or extra
- Cable length from panel to connection point
- Warranty terms and who handles claims
- Weight, and whether your mounting surface can take it
The install
Get an electrician quote before you buy the kit, so the total cost is known. Ask them to confirm the connection method and to submit the network notification.
The maths
Put your region, orientation, shading and tariff into the calculator and look at the low scenario, not the high one. If the low scenario is still acceptable, the purchase is sound.
The seller
UK entity, clear returns policy, published contact details and documentation available on request.
Frequently asked questions
Fact-check status: reviewed. Read our editorial policy. General information only — not electrical, legal or financial advice.