Balcony Solar Deals UK
Verified plug-in kits you can actually buy, with the price each retailer showed when we checked, followed by the battery systems that need an electrician. Plug-in solar has been legal in Great Britain since 27 August 2026.
Affiliate links: if you buy through a link on this page we may earn a commission, at no extra cost to you. It never changes what we list. Full disclosure
Prices move; the register moves faster
Two routes, and the pill tells you which. The 6 kits marked “Plug-in route (verified kit)” are assessed Compliant on the ENA register, so you can plug them into a wall socket yourself and notify your network operator. Systems with a battery are excluded from that route and need a qualified electrician and a G98 notification (why batteries are excluded). Neither route makes a product better or worse.
PatioSun Lite
400W (2 × 200W)Plug-in route (verified kit)£449
via PatioSun (direct) · seen 4 Sept 2026
The lowest-priced kit on the ENA register with a live listing. Two 200W panels and an 800VA-class microinverter from a UK start-up that sells direct through its own store, Great Britain delivery only. Small panels suit a narrow balcony; the trade-off is that 400W of panels will not push the inverter anywhere near its cap.
Strengths
- ✓Verified Compliant on the register (PATIO/21264/V1/A1)
- ✓Cheapest verified kit we have found
- ✓Small panels for tight balconies
Limitations
- –Direct-only, so no high-street returns
- –400W of panels is the low end of what the route allows
PatioSun Duo
800W (2 × 400W+)Plug-in route (verified kit)£549
via PatioSun (direct) · seen 4 Sept 2026
Two 400W-plus panels for the price most retailers want for one. Verified on the register on 1 September 2026. The listing was marked pre-order when we checked, so confirm the dispatch date before paying.
Strengths
- ✓Verified Compliant (PATIO/21026/V1/A2)
- ✓Two panels at a one-panel price
- ✓Same UK plug-in design as the Lite
Limitations
- –Listed as pre-order when checked
- –Direct-only
UKSOL Plug-In Solar Pro Compact 515W
515W (single panel)Plug-in route (verified kit)£599
via Argos · seen 4 Sept 2026
The kit to buy if you want a big-name retailer behind the purchase. UKSOL was the first brand onto the register as Compliant, on 18 August 2026, and Argos ranges six of its Pro bundles with free delivery and its usual returns. This single-panel hybrid-mount kit is the cheapest of the six.
Strengths
- ✓Verified Compliant (UKSOL/21008/V1/A4)
- ✓Argos: free delivery, familiar returns, pay-monthly option
- ✓UK brand with a UK support line
Limitations
- –One panel, so less generation than a two-panel kit at the same money
- –Check the delivery estimate on the listing
Thunder Energy Bolt 920W
920W of panelsPlug-in route (verified kit)£749.99
via Thunder Energy (direct) · seen 4 Sept 2026
Two Bolt kits were assessed Compliant on 27 August 2026, and this is the larger. Sold direct with free delivery; a smaller 460W Bolt is £200 less. Thunder Energy also sells battery bundles and a Storm range, none of which is on the register.
Strengths
- ✓Verified Compliant (THUNE/21204/V1)
- ✓Free delivery, listed as in stock
- ✓Close to the 2,000W panel cap's sweet spot for an 800VA inverter
Limitations
- –Direct-only
- –The brand's battery bundles are a different, conventional-route product
UKSOL Plug-In Solar Pro Duo 890W (hybrid mount)
890W (2 panels)Plug-in route (verified kit)£849
via Argos · seen 4 Sept 2026
The two-panel UKSOL kit in the mount that works on a balcony railing or a wall. Verified on 18 August 2026. Argos also lists a ground-mount version of the same kit at a higher price, and City Plumbing stocks the ground-mount kits for less.
Strengths
- ✓Verified Compliant (UKSOL/21007/V1/A3)
- ✓Argos delivery and returns
- ✓Hybrid mount covers railing and wall
Limitations
- –£250 more than the PatioSun Duo for similar panel capacity
- –Check the delivery estimate on the listing
Modular Solar 340W / 475W Solar Unit
340W or 475W (integrated unit)Plug-in route (verified kit)see listing
via Amazon UK · seen 4 Sept 2026
An integrated panel-plus-microinverter unit from a UK company, verified on 31 August 2026 in 340W and 475W versions and sold through one Amazon listing that covers both. The listing talks about daisy-chaining up to ten units; note that the G98 rules still limit a household to one plug-in device until they are amended.
Strengths
- ✓Verified Compliant (MODUL/21168/V1/A1 and MODUL/21169/V1/A1)
- ✓Only verified kit sold through Amazon
- ✓Self-contained unit, no separate inverter to mount
Limitations
- –Lowest capacity on the register
- –Price not shown here, check the listing
EcoFlow STREAM Ultra
2,000W solar in, 1.92 kWh batteryNeeds an electrician£899£1,399
via EcoFlow UK · seen 4 Sept 2026
The flagship's solar front end (four MPPT inputs, 2,000W of panels) with half its storage, and EcoFlow discounts it hard: £899 against a £1,399 list price when we checked. Integrated battery, so it is a conventional install by an electrician with a G98 notification, not a plug-in kit.
Strengths
- ✓Same 4-MPPT solar hardware as the Ultra X
- ✓Off-grid AC output
- ✓Deep, frequent discounts
Limitations
- –Needs an electrician and a G98 notification
- –1.92 kWh fills by lunchtime on a good day
EcoFlow STREAM Ultra X
2,000W solar in, 3.84 kWh batteryNeeds an electrician£1,399
via EcoFlow UK · seen 4 Sept 2026
Double the battery of the Ultra, which is what makes overnight tariff shifting worthwhile. The one we would pick if storage is the point. Conventional route: electrician plus G98.
Strengths
- ✓3.84 kWh matches the 2,000W solar input
- ✓Smart-tariff arbitrage becomes worthwhile
- ✓Expandable
Limitations
- –38.8 kg, a two-person lift
- –Needs an electrician and a G98 notification
Anker SOLIX Solarbank 2 Pro
800W panels, 2 kWh batteryNeeds an electriciancheck listing
via Anker UK · seen 4 Sept 2026
Up to 800W of panel input with a 2 kWh LFP battery built in. Anker's plug-in device has dropped out of the register's Plug-in Solar filter, so this remains a conventional install: electrician and G98. Amazon runs deal-event pricing on it; we do not print a price because it moves.
Strengths
- ✓800W panel capacity
- ✓Battery included
- ✓Strong warranty and UK support
Limitations
- –Fixed battery, not expandable
- –Needs an electrician and a G98 notification
EcoFlow STREAM 5000
5,000W solar in, 5 kWh batteryNeeds an electrician£1,599£1,899
via EcoFlow UK · seen 4 Sept 2026
A whole-home battery system that shares a name with the balcony range. EcoFlow's UK page takes a £9.90 deposit with the balance due from 15 September and lists it at £1,599 against a £1,899 RRP. It needs a professional installation; it is not balcony solar in the plug-in sense at all.
Strengths
- ✓5 kWh, stackable
- ✓Launch discount while the pre-order runs
Limitations
- –Pre-order, no independent reviews yet
- –Electrician and DNO application required
Every verified kit, including the ones with no retail listing yet, is on the certification tracker. For the battery systems, read the EcoFlow STREAM review, Anker SOLIX review or the full comparison.
Want to estimate your savings before buying? Try our free savings calculator, read the beginner's guide or find out how much balcony solar costs in the UK.
What to Look for in a Deal
Key checks, in order
- The register reference, before anything else. A compliant plug-in kit is one assessed Compliant on the ENA Type Test Register under the Plug-in Solar device Type, and carrying the Interim Product Specification declaration and QR code on the product. Match the model code on the listing to the register record. Several brands have Compliant and Non-compliant kits under the same product name, and a CE or UKCA mark tells you nothing about this.
- Panel wattage against the inverter cap. Every verified kit outputs at most 800VA. What varies is the panel capacity feeding it, from 340W to 1,260W. More panel capacity means the inverter reaches its cap more often on a UK balcony, where panels rarely hit their rated output. Above 960W the specification says the seller must advise you to consider a professional check of your wiring; that is advice, not a compliance failure.
- Battery or no battery. A battery shifts generation to the evening, which matters if the flat is empty all day. It also takes the system off the plug-in route entirely: electrician, G98 notification, and usually a landlord conversation. For a home-office worker, a battery-free verified kit may be the better buy.
- Mounting hardware. Check what is included. Hybrid and railing mounts cover balconies; ground mounts are for gardens and flat roofs. Timber balconies and timber cladding are barred by both the specification and planning law.
- Warranty and returns. Argos and Amazon give you high-street returns; the direct sellers give you the manufacturer's own terms. Look for at least a 10-year panel warranty and read the inverter warranty separately.
Retailer direct, Argos or Amazon?
For verified plug-in kits, Argos is the only mainstream retailer we found with a range, and its free delivery, returns and pay-monthly option are real advantages over a start-up's web shop. The direct sellers (PatioSun, Thunder Energy) are cheaper for the panel capacity you get, and you are dealing with the people who built the kit. Amazon carries one verified kit, Modular Solar's, alongside dozens of look-alike kits that are not on the register at all; on Amazon, the register reference matters more than the star rating.
For the battery systems, buying direct from EcoFlow or Anker usually gives the smoothest warranty support, while Amazon is where the deal-event pricing appears. Check both before buying; the same unit can move by hundreds of pounds between promotions.
Affiliate links: if you buy through a link on this page we may earn a commission, at no extra cost to you. It never changes what we list. Full disclosure