Semi-flexible panels that strap to a standard railing and weigh 2.3kg each. No glass over a drop, no drilling, no roof work.
- 2.3kg per panel
- No drilling
- ENA-registered inverter
- Takes it with you when you move
A balcony solar kit is a small plug-in solar system designed to mount on railings rather than a roof. Our kits use 120W semi-flexible panels weighing 2.3kg each, which strap to standard railings without drilling, and a Hoymiles 800VA inverter that plugs into an ordinary socket. They have been legal to connect in Great Britain since 27 August 2026.
Why semi-flexible panels rather than glass?
Weight, and what happens in wind. A framed glass panel weighs around 20kg; ours weigh 2.3kg. On a railing several floors up, that difference is not a specification detail — it is the difference between a sensible installation and one you would lie awake thinking about.
Semi-flexible panels also follow a curved or uneven railing, sit flush rather than proud, and are far easier for one person to handle at height. The trade-off is honest: they are slightly less efficient per square metre than premium glass panels. For a balcony, where you are limited by railing length rather than by budget, that trade is usually worth making.
| Semi-flexible (ours) | Framed glass | |
|---|---|---|
| Weight per panel | 2.3kg | ~20kg |
| Mounting | Straps, no drilling | Brackets, usually bolted |
| Curved railings | Fine | No |
| One-person fit | Yes | Rarely |
| Efficiency per m² | Good | Slightly better |
| Take it when you move | Easily | Possible, awkward |
How do the panels attach to a balcony railing?
With straps, over the railing, tensioned from behind. There is no drilling into the building and no permanent fixing, which is what makes this workable for leaseholders and tenants.
Panels hang on the outside or inside face depending on your aspect and what your building allows. The inverter sits behind them or just inside, and its 5m cable reaches a socket. Nothing runs through a wall.
What will a 720W balcony solar kit power?
In practice it covers a home's background load through the middle of the day: fridge, freezer, router, standby, and a laptop or two. On a bright day you will see it carry a kettle boil or a washing machine cycle partway.
What it will not do is run a home off-grid or feed the grid for payment. There is no battery and nothing is exported. The value is in not buying the units you would otherwise have bought between roughly 9am and 5pm.
Can I have balcony solar panels if I rent?
Usually, yes — this is the form of solar most renters can actually have, because nothing is drilled, wired in or left behind. Check the tenancy agreement, then ask your landlord or managing agent in writing.
Leaseholders should read the lease for anything about the external appearance of the building or items attached to balconies. Asking first is quicker than unwinding it later.
Is balcony solar legal in the UK?
Yes, since 27 August 2026 in Great Britain, provided the kit meets the conditions — 800VA inverter, 2,000W STC panel ceiling, factory-moulded BS1363 plug, 5A fuse, no extension leads, one device per household, and G98 registration within 28 days.
The full rules, explained in plain English →
This is the perfect balcony solution for PV generation, using flexible panels strapped to your balcony railings. So much safer than attaching a glass panel to your balcony. Panels are only 2.3 kilos in weight. Verified customer feedback
Our balcony solar kits
720W Full System
£600Six 120W semi-flexible panels and the ENA-registered Hoymiles HMS-800-Pro, with cables and fixings. The standard balcony choice.
Complete Garden / Workshop System
£550The same technology set up for a garden building roof rather than a railing.
120W Semi-Flexible Panel
£79Add a panel to an existing array, within the 2,000W STC ceiling.
Balcony kits, in stock in the UK
Free delivery over £200. Questions before you order? Call 01892 750777.
Shop balcony solar kitsFrequently asked questions
Our semi-flexible panels weigh 2.3kg each, compared with roughly 20kg for a framed glass panel. That is what makes them safe to strap to a railing.
No. The panels strap over the railing and the inverter plugs into an existing socket. Nothing is drilled and nothing is permanent.
Yes, in Great Britain since 27 August 2026, provided the kit meets the conditions and you register it on a G98 form within 28 days.
Strapped semi-flexible panels sit flush against the railing and present far less of a wind-load problem than a rigid glass panel on brackets. Tension the straps properly and check them seasonally.
Yes. Unstrap the panels, unplug the inverter and take the whole system. Re-register at the new address with a fresh G98.
South gives the most output, but east and west balconies still generate usefully — east catches the morning and west the late afternoon, which can suit a working day better than you would expect.
Ready when you are
Prices are on the site, delivery is UK-wide, and the team will say when something is not the right fit.