920 W of panels
Two 460 W N-type bifacial rigid panels. Actual generation varies with the site and conditions.
SOLAR-ONLY KIT · FROM £599
Generate electricity with a complete plug-in solar kit.
Two rigid 460 W panels feed an 800 W Marstek micro-inverter. Choose the correct mounting equipment and cable length, follow the supplied instructions, and notify your network operator as required.
Legal in Great Britain since 27 Aug 2026 · 800 W limit · Plugs into a 13 A socket · Updated 12 Oct 2026
800 W AC output
The Marstek micro-inverter limits continuous AC output to 800 VA and includes anti-islanding protection.
One documented kit
Panels, inverter, mounting equipment and the selected UK plug lead are listed before purchase.
Plug-in solar in 30 seconds
- What it is
- Solar panels and a micro-inverter that plug into a normal 13 A wall socket. No electrician or scaffolding.
- Cost
- See the live kit price below.
- Output
- Up to 800 W into your home; around 700 kWh a year facing south.
- Legal?
- Yes. Plug-in solar up to 800 W is legal in Great Britain from 27 August 2026.
How plug-in solar works
PanelsMicro-inverterWall socketYour appliances
The panels make DC electricity. The micro-inverter turns it into household AC, capped at 800 W, and sends it through the socket into your home's wiring. Appliances running at the time use it first. Anything you don't use flows out to the grid, unless you add a battery to store it.
UK output month by month
Typical estimates for our 920 W kit, unshaded, central UK. PVGIS (European Commission solar tool) gives about 650 kWh a year for an upright south-facing balcony and about 890 kWh for a tilted frame; we use 700 kWh as a realistic middle figure.
| Month | South-facing (kWh) | East or west (kWh) |
|---|---|---|
| Jan | 20 | 15 |
| Feb | 36 | 27 |
| Mar | 57 | 43 |
| Apr | 78 | 59 |
| May | 92 | 69 |
| Jun | 95 | 71 |
| Jul | 92 | 69 |
| Aug | 82 | 61 |
| Sep | 63 | 47 |
| Oct | 43 | 32 |
| Nov | 24 | 18 |
| Dec | 18 | 14 |
| Year | 700 | 525 |
Cost and payback
Yearly saving for a south-facing kit at 26.32p/kWh, with unused power exported at 4.5p/kWh. The more you use while the sun is out, the more you save.
40% USED AT HOME
£93/yr
60% USED AT HOME
£123/yr
80% USED AT HOME
£154/yr
Export payments need a Smart Export Guarantee tariff. Estimates only; shade, tilt and weather change real results. Without a battery most homes use 40–60% of the output. Source: PVGIS, European Commission JRC.
Is plug-in solar legal in the UK?
Yes. The government announced on 24 March 2026 that plug-in solar would be made available, and the rules (SI 2026/848) came into force on 27 August 2026. Kits are limited to 800 W of output, and you register the kit with your local network operator within 28 days. It's free.
Batteries are different. A plug-in battery may be charged from a wall socket, but it can only power things through its own built-in AC outlet. It is not yet legal for a battery to send power back into the wall socket.
Is plug-in solar legal? · How to notify your network operator
Plug-in vs rooftop solar vs power stations
| Plug-in solar | Rooftop solar | Portable power station + panel | |
|---|---|---|---|
| Cost | Kit price | Several thousand pounds | Varies widely |
| Installer | No, DIY | Yes, MCS installer | No |
| Scaffolding | No | Usually | No |
| Output to home | Up to 800 W via socket | Typically 3–6 kW | Only from its own outlets |
| Notification | Register with network operator | Installer handles it | None |
CURRENT RANGE
Choose the documented kit.
Prices and availability come from the live catalogue. Every customer price includes VAT.
Where can I mount it?
On a balcony railing, a wall, a flat roof, the garden or a shed, using mounting equipment suited to the spot. Renters and leaseholders need written permission first, and listed buildings or conservation areas may need planning advice.
Before you order
Check panel dimensions and total weight
Choose mounting equipment for the exact location
Check shade, orientation and wind exposure
Get landlord or freeholder permission where needed
Use a suitable socket and follow the product instructions
Complete the required network notification
Common questions
How much can an 800 W solar kit save?
It depends on how much of the generated electricity you use at the time, your unit rate, and the site's orientation and shade. Electricity the home doesn't use is not stored unless you add a battery. Use the savings calculator with your own figures.
What is included in the £599 kit?
Two 460 W rigid panels, a Marstek 800 W micro-inverter, the listed mounting equipment and a selectable 3 m, 5 m or 10 m UK plug lead. Check the product page before ordering because the selected mounting option must suit your site.
What output should I expect?
The panels total 920 W peak and the micro-inverter is rated at 800 VA continuous AC output. Real generation varies with orientation, tilt, shade, temperature and weather.
Do I need to notify my network operator?
Yes. Follow the product instructions and notify your Distribution Network Operator when connecting and disconnecting the kit. The product page lists the current product reference and documentation.
Can I mount it anywhere?
No. Use the supplied mounting system only where it is suitable, account for wind loading, and obtain any landlord, freeholder or planning permission that applies.
Can I add a battery later?
Yes. A plug-in battery can be charged from a normal socket, but under current UK rules it may only power appliances through its own built-in AC outlet; it must not feed electricity back into the wall socket. Whole-home battery power needs a professionally installed system.
Does it work in winter?
Yes, but output is much lower. December typically produces around a fifth of a June month, as the month-by-month table on this page shows.
Can I use an extension lead?
No. Plug the kit's lead directly into a suitable wall socket, as the product instructions require.
What happens in a power cut?
The micro-inverter switches off automatically when the mains supply is lost (anti-islanding), so the kit does not provide power during an outage.
Who supplies and supports the kit?
PowerXpress Ltd sells, ships and supports the kit. Plug-In Solar acts as sales agent. The current delivery and warranty details appear on the product page.
Related guides
- Is plug-in solar legal in the UK?
- G98 network notification guide
- 800 W balcony solar savings
- Balcony solar panels UK
Last updated 12 October 2026.