Plug-In Solar · EcoFlow
EcoFlow STREAM UK: Plug-In Solar Kits, Prices and Batteries
Every EcoFlow STREAM kit sold in the UK, what it costs, whether it is on the official compliant list, and where to buy it. We check EcoFlow's prices and the register ourselves.
Last updated: 22 October 2026
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EcoFlow sells its STREAM plug-in solar range as a set of kits. Each kit pairs one 800W STREAM microinverter with two or four rigid panels and a bracket for a wall, a flat roof or a pitched roof. EcoFlow also sells STREAM batteries, which are a separate purchase and a different kind of installation.
Quick answer: EcoFlow's STREAM Facade and Roof kits cost £449 to £699 on EcoFlow's UK store, and both register entries that cover them read Compliant when we checked on 7 October. EcoFlow also sells a STREAM 800W Microinverter Kit with two 500W panels and no brackets at £549, though its register status is less clear, so ask EcoFlow before you buy. When we checked on 22 October, every Facade, Roof, Garden and Balcony kit was out of stock on EcoFlow's UK store, and the 800W Microinverter Kit was the only STREAM solar kit you could order. The STREAM batteries start at £799, but EcoFlow says they must be wired in by an electrician. Check EcoFlow's site for stock, and see the alternatives if the kit you want is unavailable.
On this page:
The STREAM range at a glance
Prices and stock are from EcoFlow's UK store on 22 October 2026. They move often during EcoFlow's sales, so the price at checkout is the one that counts.
| Product | What it is | Price |
|---|---|---|
| STREAM Facade kit | 800W microinverter, 2 or 4 panels, wall bracket | £449 to £698 |
| STREAM Roof kit | 800W microinverter, 2 panels, flat or pitched roof bracket | £549 to £699 (out of stock) |
| STREAM Garden and Balcony kits | 800W microinverter, 2 panels, garden or balcony bracket | From £499 (out of stock) |
| STREAM 800W Microinverter Kit | 800W microinverter and 2 × 500W panels, no brackets | £549 |
| STREAM AC Pro | 1.92kWh battery, no solar input | £899 |
| STREAM Ultra | 1.92kWh battery with built-in solar input | £799 |
| STREAM Ultra X | 3.84kWh battery with built-in solar input | £1,259 |
If a kit is unavailable, EcoFlow's product pages have a "Notify me" button. EcoFlow also sells power stations, portable solar and home batteries beyond the STREAM range. For backup in a power cut, see our best portable power station guide, which includes the DELTA 3 Classic and DELTA Pro 3. See EcoFlow's UK store →
What you are buying
Every STREAM kit uses the same 800W STREAM microinverter, which turns the panels' DC power into mains electricity. What changes between kits is the panels and the bracket. Kits come with two 400W, 450W or 520W panels, or four 250W panels on the lightweight facade bracket.
The UK rules cap a plug-in system at 800W of output, so panels above 800Wp do not raise the peak. They do help in the morning, the evening and on cloudy days, when the panels produce less than their rating. That is why the larger kits still make more electricity over a year.
The kits have no battery. Power you do not use as it is made goes to the grid unpaid. If you are out most of the day, that matters more than which kit you choose. Our calculator shows the effect.
Is it legal to fit yourself?
Self-install plug-in solar has been allowed in Great Britain since 27 August 2026, for kits that meet the official specification and are listed as Compliant on the Energy Networks Association (ENA) register. We checked the register itself, not EcoFlow's marketing.
| Register reference | What it covers | Status on 7 October |
|---|---|---|
| ECOFL/21128/V1/A3 | STREAM Facade, Flat Roof and Pitched Roof kits | Compliant |
| ECOFL/21606/V1/A1 | EF-PS-800 + SPDG505-N108R12 | Compliant |
EcoFlow's own pages say something different. EcoFlow's UK FAQ still says the STREAM DIY cable must be connected to the distribution board by a professional installer or electrician. Its battery listings say the same and add that STREAM is supplied with a cable with stripped ends and no plug. The register says the Facade and Roof kits are Compliant. Before you buy, ask EcoFlow to confirm in writing that the kit ships with a UK plug cable and the register reference on the box. If it arrives without a plug, it is not a self-install kit.
Before you fit any plug-in kit, check these:
More on the rules: is balcony solar legal in the UK, are plug-in solar panels safe and the plug-in solar specification.
How we rate them: our scores out of 5 weigh four things: whether you can fit it yourself under the rules, value for money at EcoFlow's 22 October prices, how much it makes or stores, and whether you can buy it now. We compare EcoFlow's listings and the register; we haven't tested these kits ourselves.
Facade kits and prices
Out of stock on 22 October. Every Facade kit below was unavailable on EcoFlow's UK store. The prices are EcoFlow's listed prices, so use the Notify me button on EcoFlow's page if you want one.
For a sunny wall: a house side, a garage or a garden wall. The 50° adjustable bracket tilts the panels away from the wall, which makes noticeably more power than the 90° bracket, where the panels hang flat against it. Choose 90° only if the wall or the space in front of it rules out a tilt.
| Bracket | Panels | Price | |
|---|---|---|---|
| 50° adjustable | 800Wp (2 × 400W) | £449 £519 | See at EcoFlow → |
| 50° adjustable | 900Wp (2 × 450W) | £499 £579 | See at EcoFlow → |
| 50° adjustable | 1040Wp (2 × 520W) | £549 £649 | See at EcoFlow → |
| 90° fixed | 800Wp (2 × 400W) | £449 £529 | See at EcoFlow → |
| 90° fixed | 900Wp (2 × 450W) | £549 | See at EcoFlow → |
| 90° fixed | 1040Wp (2 × 520W) | £599 £849 | See at EcoFlow → |
| 90° lightweight | 1000Wp (4 × 250W) | £698 £759 | See at EcoFlow → |
The 90° lightweight kit uses four smaller 250W panels, which are easier to lift and fit more wall shapes. It costs more for slightly less panel power than the 1040Wp kits.
Roof kits and prices
Out of stock on 22 October. Neither the flat roof nor the pitched roof version was available on EcoFlow's UK store. The prices are EcoFlow's listed prices.
One product with two brackets, picked at checkout. The flat roof bracket suits a garage, an extension or a shed. The pitched roof bracket suits a sloping roof, but think hard about access: you need to be able to fit it, and later clean or remove it, safely.
| Bracket | Panels | Price | |
|---|---|---|---|
| Pitched roof | 800Wp (2 × 400W) | £599 £719 | See at EcoFlow → |
| Pitched roof | 900Wp (2 × 450W) | £649 £799 | See at EcoFlow → |
| Pitched roof | 1040Wp (2 × 520W) | £699 £849 | See at EcoFlow → |
| Flat roof | 800Wp (2 × 400W) | £549 £649 | See at EcoFlow → |
| Flat roof | 900Wp (2 × 450W) | £599 £699 | See at EcoFlow → |
| Flat roof | 1040Wp (2 × 520W) | £549 £749 | See at EcoFlow → |
Yes, the 1040Wp flat roof kit was cheaper than the 900Wp one on 22 October. That is EcoFlow's price, not a mistake on our part. If both come back at those prices, the 1040Wp is the one to buy.
The 800W kit with 500W panels
EcoFlow STREAM 800W Microinverter Kit, 2 × 500W panels
800W STREAM microinverter · two 500W rigid panels · no brackets
Our rating: 3.5/5
Why 3.5: The only kit in stock, with the biggest panels. No brackets, and it is not clear which register entry covers it.
EcoFlow listed this kit at £549 (was £678) on 22 October, and it was the only STREAM solar kit in stock that day. It has larger 500W panels than the Facade and Roof kits but no bracket, so you need your own mounting. It suits ground mounting in a garden, or a frame you already have. EcoFlow also lists versions with its own garden, balcony, facade and pitched roof brackets.
It is not clear which register entry this kit falls under. The ENA entry ECOFL/21606/V1/A1 lists the EF-PS-800 microinverter with an SPDG505 panel, which may be this kit, but EcoFlow does not say so on the listing. Ask EcoFlow which register reference applies, and whether it ships with a UK plug, before you order.
STREAM Ultra, Ultra X and AC Pro batteries
The STREAM batteries store daytime solar for the evening. They are not part of the self-install rules. EcoFlow's own listings say the STREAM batteries ship with a cable with stripped ends and no plug, and must be hardwired by a certified, registered electrician. Budget for that on top of the price.
| STREAM AC Pro | STREAM Ultra | STREAM Ultra X | |
|---|---|---|---|
| Battery | 1.92kWh | 1.92kWh | 3.84kWh |
| Solar input | None, charges from your existing solar | Up to 2,000W, 4 panel inputs | Up to 2,000W, 4 panel inputs |
| AC output | 1,200W | 1,200W | Up to 2,300W |
| Output to your home wiring | 800W | 800W | See EcoFlow |
| Expandable to | 11.52kWh (6 units) | 11.52kWh (6 units) | 23kWh |
| Warranty | 10 years | 10 years | See EcoFlow |
| Our rating | 2.5/5 | 3.5/5 | 3.5/5 |
| Price on 22 October | £899 | £799 £1,399 | £1,259 £1,499 |
| With 4 × 500W panels | Not offered | £1,499 £1,978 | £1,649 £1,899 |
| Check at EcoFlow → | Check at EcoFlow → | Check at EcoFlow → |
Ultra, 3.5/5: The best-value STREAM battery: solar input for four panels and a 10-year warranty. Needs an electrician.
Ultra X, 3.5/5: Twice the battery and a higher output than the Ultra. Needs an electrician, and EcoFlow doesn't state the warranty on the listing.
AC Pro, 2.5/5: Same 1.92kWh as the Ultra but £100 more and with no solar input. Needs an electrician.
Which one? The AC Pro has no solar input. It charges from a socket, so it suits a home that already has solar panels or a plug-in kit, or one on a cheap overnight tariff. The Ultra takes up to four panels directly, so with four 500W panels it becomes a whole system: 2kW of panels charging a battery. The Ultra X is the same idea with twice the battery and a higher output for heavier appliances.
A 1.92kWh battery holds about £0.51 of electricity at 26.32p per kWh. If it fills and empties every day it could save about £185 a year, and less in winter, when there is little spare solar to store. That is before the electrician's cost. A battery adds most when you already export a lot of solar. Our guides to plug-in solar batteries, the new battery placement rules and the best home batteries go further.
Alternatives
With most STREAM kits out of stock, or if you would rather buy from a smaller UK company, these are where we would look.
Thunder Bolt 460W and 920W
A UK company's kits with a Hoymiles 800W microinverter and a 10-year warranty, on the register as Compliant since 27 August. Our code COOLPOWER20 takes £20 off, from £529.99. Read the review and get the code →
Every compliant kit, compared
Our plug-in solar guide tracks the ENA register. It had 120 Compliant entries from 26 suppliers on 7 October. See the compliant kits →
Anker SOLIX Solarbank 4 Pro
A battery-first system like the STREAM Ultra, for homes that want storage. Hardwired, so it needs an electrician too. Read the review →
Plug-in solar and battery deals
Current prices from the brands we work with directly, updated when they change. See the deals →
Estimate your savings
A rough figure for one STREAM kit, with no battery. Pick your kit, where you live, which way it faces and how much of the day someone is at home.
Assumes 900 kWh a year per kW of panels facing south at a good tilt in central England. Panels above 800Wp are counted at less than their rating because the inverter caps output at 800W. A 90° facade makes about 70% of a tilted panel's output. You only save on the share you use as it is made; plug-in systems earn nothing for what goes to the grid. Shading can cut these figures a lot.
On the default settings, the 1040Wp flat roof kit makes about 790 kWh a year and saves about £93, a payback of around 6 years. EcoFlow quotes savings of up to £115 a year for these kits, which needs a sunny site and most of the power used at home. At January's forecast price of 30.28p, every figure rises by about 15%. Our January price cap guide has the details.
Frequently asked questions
Want to fit plug-in solar this autumn?
Every compliant kit on the official register, with prices, in one place.
Compare Compliant Kits →Related Guides
Updated 22 October 2026. Prices and stock are from EcoFlow's UK store on 22 October 2026; prices shown struck through are EcoFlow's own comparison prices. Battery specifications and installation requirements are from EcoFlow's UK product listings. Register status is from the ENA Connect Direct type test register, checked on 7 October 2026. Savings use the Ofgem price cap of 26.32p per kWh for October to December 2026 and Cornwall Insight's January 2027 forecast of 30.28p. We earn a commission if you buy EcoFlow products through links on this page.