Best plug-in solar kits in the UK (2026)
We've tested and ranked the kits actually on sale since plug-in solar became legal on 27 August 2026. Here's our honest Top 5.
EcoFlow STREAM 800W Kit
Our overall pick. EcoFlow is the government-named technology partner for the UK plug-in solar rollout, and the STREAM is a proven balcony/garden system. Start panel-only and add battery storage later without replacing anything.
- Output: 800W
- Panels: 2 x 400W
- Battery: Optional (1.92-3.84 kWh)
- Warranty: 5 years inverter
- App: EcoFlow App
- Best all-round kit for most UK homes
- Proven track record in Germany and across Europe
- Start without battery, add storage later
- Excellent app with live monitoring
- 800W legal max output available
- 5-year microinverter warranty is shorter than some rivals
- Stock currently in high demand - dispatch can take weeks
- Bracket accessories cost extra
🏆 Our pick: the best all-round kit for most UK homes - proven brand, sensible price and an easy upgrade path to battery storage.
UKSOL Pro Compact 515W Plug-In Solar Kit
The first compliant plug-in solar kit available on UK high streets, launched at Argos on 27 August 2026. A 515W single-panel system with an 800W smart microinverter and adjustable hybrid mount - everything in the box.
- Output: 515W panel / 800W inverter
- Panels: 1 x 515W
- Efficiency: 23.3%
- Warranty: 10 years British
- Retailer: Argos
- Buy it today at Argos - first high-street compliant kit
- Everything included: panel, 800W microinverter, hybrid mount
- 10-year British warranty
- Wi-Fi and Bluetooth app monitoring
- Simplest route to a legal plug-in system
- Only 515W of panel - less generation than 800W rivals
- Ground or wall mount only, not for balconies
- Single panel means less tolerance of shading
Anker SOLIX RS40P 800W
Anker maxes out the 800W UK legal cap with two 400W panels and the RS40 microinverter. Strong build quality, clear documentation and one of the longest inverter warranties in the UK market.
- Output: 800W
- Panels: 2 x 400W
- Battery: Optional (SOLIX)
- Warranty: Long inverter warranty
- Plug: UK 13A
- Full 800W legal cap in one kit
- Long inverter warranty - among the best in the UK market
- Excellent build quality and app
- UK 13A plug included
- Good value per watt
- Less established UK distribution than EcoFlow - check stock
- Battery modules add significant cost
- Newer to the market, long-term support unproven
UKSOL Pro Max 1260W Plug-In Solar Kit
The heavyweight UKSOL kit: two 630W bifacial TOPCon panels (1260W total) driving an 800W smart microinverter. Oversized panels keep generating even in poor UK weather.
- Output: 1260W panels / 800W inverter
- Panels: 2 x 630W bifacial
- Efficiency: 23.3%
- Warranty: 10 years British
- Retailer: Argos
- Maximum generation of any high-street kit - great for cloudy UK weather
- 23.3% module efficiency, bifacial glass-glass panels
- 10-year British warranty
- IP67 waterproof microinverter with app monitoring
- Not suitable for balconies - ground or wall mount only
- Longest lead time (estimated late October delivery)
- Higher upfront cost
EcoFlow STREAM Ultra X
The biggest STREAM system: four 400W panels with a built-in 3.84 kWh battery, expandable to 23 kWh. Designed for homes that want maximum savings with evening power from storage.
- Output: 1600W panels / 2300W AC
- Battery: 3.84 kWh built-in, expandable to 23 kWh
- Panels: 4 x 400W
- Warranty: 5 years
- Built-in 3.84 kWh battery shifts solar into the evening
- Expandable to 23 kWh - huge capacity headroom
- 4 x MPPT for up to four panels
- Generates up to ~1,800 kWh per year in good conditions
- Expensive - several times the cost of a starter kit
- Overkill for flats or small balconies
- Battery degradation should be factored into long-term value
| Kit | Price | Output | Battery | Warranty | Best for | |
|---|---|---|---|---|---|---|
| EcoFlow STREAM 800W EcoFlow |
£499+ | 800W | Optional (add later) | 5 yr inverter | First-time buyers - simple, proven, upgradeable | View → |
| UKSOL Pro Compact 515W UKSOL |
£599 | 515W | No | 10 yr British | Buying in a high street shop today (Argos) | View → |
| Anker SOLIX RS40P Anker |
£899 | 800W | Optional (SOLIX) | Long inverter warranty | Maxing out the 800W legal cap at a fair price | View → |
| UKSOL Pro Max 1260W UKSOL |
£989 | 1260W panels | No | 10 yr British | Maximum generation in poor UK weather | View → |
| EcoFlow STREAM Ultra X EcoFlow |
£1,299+ | 1600W panels | 3.84 kWh built-in | 5 yr | Biggest savings with storage for evening use | View → |
How we rank kits
We score kits on five things that matter to a UK buyer: value for money, build quality and brand track record, ease of installation, battery upgrade path, and warranty and UK support. We only rank kits that are actually available to UK buyers with a UK-market plug (BS 1363) and the right approvals.
Quick answers
What's the best plug-in solar kit right now?
The EcoFlow STREAM 800W kit is our overall pick. It's the most proven system in the UK market, works with a standard socket, and you can add battery storage later without replacing anything. It's also from the company the government named as a technology partner for the plug-in solar rollout.
What's the cheapest way to start?
If you want to buy today in a shop, the UKSOL Pro Compact 515W at Argos (£599) is the first compliant kit on high street shelves. For the best value per watt, the Anker SOLIX RS40P gives you the full 800W legal cap for around £899.
Should I buy a battery with the kit?
Not necessarily. Without a battery, you save by using the power as it's generated - simplest and cheapest. A battery stores surplus for the evening but adds £700–£1,300. Most kits let you start without and add one later, which is usually the smart first step.
When should I wait?
The market is only days old. Retailers including Amazon, Currys, B&Q, Screwfix and Lidl are expected to launch ranges within weeks, and the government expects prices to fall toward £500–£770. If you're not in a hurry, prices are likely to keep dropping.
What to check before you buy
- UK-market version - the kit must ship with a UK (BS 1363) plug and UK approvals
- Expandable - can you add a battery later without replacing the kit?
- Warranty - panels last 25+ years; check the inverter warranty separately (5–12 years is typical)
- G98 notification - you must notify your DNO before connecting (free, online, takes minutes)
- Retailer - buying from Argos, Amazon, Currys or B&Q makes returns and support easier
New kits are arriving weekly - read our guides to stay up to date, or run the savings calculator to see what a kit could save you.