Plug-in solar vs rooftop solar
Plug-in solar is cheap, quick and needs no installer, but saves far less. Rooftop solar costs much more and saves much more.
Side by side
| Plug-in solar | Rooftop solar | |
|---|---|---|
| Saving a year | Up to £110 | Up to £480 |
| Kit cost | £400–£600 expected | Much more, fitted by an installer |
| Installation | Plug into a socket yourself | Installer and scaffolding |
| Maximum output | 800W into the socket | Several kW |
| Suits | Renters, flats, balconies, smaller budgets | Homeowners with a suitable roof |
Savings figures from GOV.UK (rooftop) and DESNZ (plug-in). Plug-in kit prices are the government's expectation.
Which one?
If you own a house with a good roof and can afford it, rooftop solar saves far more. If you rent, live in a flat or want something small, plug-in solar is the realistic option, as long as you have permission and a suitable spot. You can also add a plug-in kit to a home with rooftop solar; check with your installer first. Details
Common questions
Is plug-in solar as good as rooftop solar?
No. The government puts the saving at up to £110 a year for plug-in solar against up to £480 a year for rooftop solar. Plug-in costs far less and needs no installer.
More guides
Planning permission
When you need it, and the new rules for houses in England.
Renting
Asking your landlord, with a message you can copy.
Flats and balconies
Leases, fire safety, cladding and timber balconies.
Sockets and wiring
Which socket, why no extension leads, and the fuse box check.
Which way to face it
South, east, west or upright: what each makes.
Does it work in winter?
Month by month, what a kit makes in the UK.
Sources
- GOV.UK: Households can save as plug-in solar panels come to market (26 August 2026)
- DESNZ: Plug-in solar final stage impact assessment (July 2026)
- Energy Saving Trust: plug-in solar panel checklist
Checked 13 October 2026. Spotted something out of date? Email hello@socketpanel.co.uk. How we check