The kit
One product, because at this size a range is mostly theatre. Two panels on an 800 W microinverter, which is the most that class of inverter takes and the size that keeps you inside the simple G98 notification.
| Kit | Panels | Array | Railing needed | Fitted, inc VAT |
|---|---|---|---|---|
| Solar Balcony 800 | 2 | 0.8 kWp | ≈ 2.4 m | £1,380 |
If your railing is shorter than 2.4 m
Then we cannot help you yet, and we would rather say so on this page than at the end of a survey.
We drafted a one-panel kit for narrow and Juliet balconies and dropped it, because the price did not work. A single-panel system needs the same 800 W inverter, the same cabling and the same electrician’s visit as a two-panel one — almost the entire cost is unchanged. Priced honestly it came out close enough to the full kit that you would have been paying most of the money for half the electricity, and priced attractively it lost money on every job. Neither is a product worth selling.
If that changes we will put it here. In the meantime, measure your railing before you get too invested: 2.4 m is the number.
Why nothing goes above 800 W
Because that is where the paperwork changes. A generator of this size is covered by the Energy Networks Association’s G98 process, which is a notification after the fact. Go bigger and you are into G99, which is an application: you ask, you wait, and the network operator can impose conditions. The entire balcony solar category worldwide has settled on 800 W inverters for that reason, and there is no version of this product that sensibly exceeds it.
If you want more than 800 W and you have somewhere to put it, what you actually want is roof solar. We will say so.
What is in the price
- Survey of the balcony, the railing and the route for the cable
- Tier-1 monocrystalline panels, all-black, and railing brackets suited to your balustrade
- An 800 W microinverter, fully type tested and listed on the ENA register
- A fixed connection point installed by an electrician — no lead through a door
- Electrical installation certificate, which is yours to keep
- G98 notification to your distribution network operator
What we will and will not tell you about the hardware
The panels are tier-1 monocrystalline and all-black. The brackets are chosen at the survey to suit your balustrade, because a glass balustrade and a steel-bar one take completely different fixings. We do not name a panel model on this page, because for a two-panel array it tells you less than you would think and it would be out of date the first time we changed supplier.
The inverter is different, and we are specific about it — because elsewhere on this site we tell you to ask sellers which specification a device meets, by name, in writing, and it would be a poor show if we could not answer that ourselves.
Ours is an 800 W microinverter that is fully type tested and listed on the Energy Networks Association’s Type Test Verification Report Register. That is the requirement for any generator connected to the distribution network, it predates the plug-in rules entirely, and it is verifiable: your G98 installation document carries the manufacturer’s reference number for the exact unit, and we give you that number with your quote rather than after you have paid.
Note what this is not. The Interim Product Specification introduced in August 2026 governs devices connected by plug and socket. We hard-wire, so it does not apply to what we install — and a seller telling you a hard-wired system needs IPS v2, or that a plug-in kit does not, has it backwards. See what changed on 27 August.
Warranty terms for the panels and the inverter come with your quote rather than being generalised on this page, for the same reason — they are the manufacturer’s terms for the exact units we are fitting you, and you should read those rather than a summary of them. What we do and do not guarantee on top is set out on how it works, and the short version is that we pass the manufacturer cover through and do not sell a warranty on top of your statutory rights.
What is not included
Consent. Whether that is a landlord, a factor, a freeholder or your neighbours, getting a yes is your part of the job — though we will put the technical answers in writing for you to forward, and we do not take a payment until you have one. See what you are allowed to do.
Also not included, and not coming: a battery, backup power in a cut, and any income for electricity you export. None of the three is available on a system of this type, and any of them appearing in a competitor’s quote is worth a second look. The battery question in particular has a hard answer — see balcony solar explained.
You could also just plug one in
Since 27 August 2026 a compliant plug-in kit can be connected through a socket in Great Britain, so buying hardware and fitting it yourself is a real option rather than a rule-breaking one. We think the fitted price earns its keep — mostly because zero-rated VAT on a supplier-installed system offsets most of the visit — but the arithmetic is on the pricing page for you to check, and what “compliant” means is worth reading before you buy anything.