
EcoFlow STREAM Roof Kit
- Panels
- 800 Wp
- Output
- 800 W
- Mount
- Flat roof, pitched roof
Stock . We haven’t tested this kit ourselves; figures come from the maker, retailers, the ENA register and PVGIS. How we get our data.
How it ranks
Every stat compared with all the ENA-compliant kits on sale in the UK, recalculated for your home.
For Birmingham, south-facing on a garden stand (30°), medium daytime use.
Overall rank
#6 of 24
Of the 24 ENA-compliant kits with a UK price, this is the 6th best value for your setup, at 7.3p per kWh over 10 years.
Strong on
cost per kWh over 10 years (6th), price per watt of panel (6th), lost to the 800 W cap (1st)
Weak on
Nothing in the bottom quarter.
Value for money
Cost per kWh over 10 years
Price ÷ the electricity it makes in 10 years. The fairest single measure of value; this is the overall rank.
7.3p
13pbest 4.9pCost per kWh over 10 years: 7.3p; range 13p to 4.9p.6thof 24
Pays for itself in
Years until bill savings cover the price.
4.9 yrs
7.5 yrsbest 3.7 yrsPays for itself in: 4.9 yrs; range 7.5 yrs to 3.7 yrs.8thof 24
Saving a year
Electricity used at home × your unit rate, plus any export payment.
£114
£89best £130Saving a year: £114; range £89 to £130.=13thof 24
Price
Best in-stock price we found (last seen price if none in stock).
£549
£963.04best £336Price: £549; range £963.04 to £336.10thof 24
Price per watt of panel
Price ÷ total panel power. Cheap watts only help up to the 800 W output cap.
£0.69/W
£1.26/Wbest £0.45/WPrice per watt of panel: £0.69/W; range £1.26/W to £0.45/W.6thof 24
Output
Electricity a year
PVGIS solar data for your location and direction, after shading and the 800 W output cap.
766 kWh
426 kWhbest 1181 kWhElectricity a year: 766 kWh; range 426 kWh to 1181 kWh.=13thof 24
Panel power
Total rated panel power (DC). More panel power fills the 800 W cap for more of the day.
800 Wp
445 Wpbest 1260 WpPanel power: 800 Wp; range 445 Wp to 1260 Wp.=13thof 24
Lost to the 800 W cap
Share of the panels’ output above 800 W on bright days, which is wasted.
0%
2.2%best 0%Lost to the 800 W cap: 0%; range 2.2% to 0%.=1stof 24
Used in your home
Share of the output your home uses as it’s made (the rest goes to the grid).
59%
44%best 83%Used in your home: 59%; range 44% to 83%.=11thof 24
Hardware
Panel efficiency
From the panel datasheet. Higher means more power from the same area.
Not published
–
Inverter peak efficiency
From the inverter datasheet.
Not published
–
Panel warranty
Product warranty on the panels, from the maker.
Not published
–
Inverter warranty
Warranty on the microinverter, from the maker.
10 yrs
10 yrsbest 12 yrsInverter warranty: 10 yrs; range 10 yrs to 12 yrs.=11thof 24
Availability
Retailers with it in stock
UK retailers we track that have it in stock right now.
0
0best 0Retailers with it in stock: 0; range 0 to 0.=1stof 24
Each line shows every ranked kit as a dot, worst on the left and best on the right; this kit is the large yellow dot. “Not published” means the maker doesn’t state it, so it isn’t ranked. How we rank.
Where to buy
| Retailer | Price | Stock | Checked | Buy |
|---|---|---|---|---|
| EcoFlow UK EcoFlow STREAM Roof Kit - Flat Roof / (800Wp) 2 × 400W Rigid Solar Panel + STREAM Microinverter / Bracket: Flat Roof | £549 | Unknown | View EcoFlow STREAM Roof Kit at EcoFlow UK | |
| EcoFlow UK EcoFlow STREAM Roof Kit - Flat Roof / (1040Wp) 2 × 520W Rigid Solar Panel + STREAM Microinverter / Bracket: Flat Roof | £549 | Unknown | View EcoFlow STREAM Roof Kit at EcoFlow UK | |
| EcoFlow UK EcoFlow STREAM Roof Kit - Flat Roof / (900Wp) 2 × 450W Rigid Solar Panel + STREAM Microinverter / Bracket: Flat Roof | £599 | Unknown | View EcoFlow STREAM Roof Kit at EcoFlow UK | |
| EcoFlow UK EcoFlow STREAM Roof Kit - Pitched Roof / (800Wp) 2 × 400W Rigid Solar Panel + STREAM Microinverter / Bracket: Pitched Roof | £599 | Unknown | View EcoFlow STREAM Roof Kit at EcoFlow UK | |
| EcoFlow UK EcoFlow STREAM Roof Kit - Pitched Roof / (900Wp) 2 × 450W Rigid Solar Panel + STREAM Microinverter / Bracket: Pitched Roof | £649 | Unknown | View EcoFlow STREAM Roof Kit at EcoFlow UK | |
| EcoFlow UK EcoFlow STREAM Roof Kit - Pitched Roof / (1040Wp) 2 × 520W Rigid Solar Panel + STREAM Microinverter / Bracket: Pitched Roof | £699 | Unknown | View EcoFlow STREAM Roof Kit at EcoFlow UK |
What it would make for you
For Birmingham, south-facing on a garden stand (30°), no shading, medium daytime use.
- Output
- 766 kWh/yr
- Saving
- £114 /yr
- Pays back in
- 4.9 years
- Cost per kWh
- 7.3p over 10 yrs
| Month | kWh |
|---|---|
| Jan | 28 |
| Feb | 39 |
| Mar | 66 |
| Apr | 86 |
| May | 95 |
| Jun | 96 |
| Jul | 96 |
| Aug | 85 |
| Sep | 71 |
| Oct | 49 |
| Nov | 32 |
| Dec | 24 |
- About 59% used in your home at 25.33p/kWh (West Midlands price cap rate).
Full specifications
Panels
- Panels
- Not published
- Total panel power (DC)
- 800 Wp
- Panel model
- Not published
- Cell type
- Not published
- Bifacial
- Not published
- Efficiency
- Not published
- Size (each)
- Not published
- Weight (each)
- Not published
Inverter
- Model
- EcoFlow STREAM Microinverter (EFSTREAMMI800W; kit SKUs prefixed MI800WII)
- Max output (AC)
- 800 W
- MPPT inputs
- 2
- Peak efficiency
- Not published
- MPPT voltage range
- 16–60 V
- Max input current (per input)
- 16 A
- Max input power (per input)
- 600 W
- Weatherproofing
- IP67
- Monitoring
- 2.4 GHz Wi-Fi + EcoFlow app
- Inverter weight
- 3.2 kg
Installation
- Mounting included
- roof bracket, variant-dependent: pitched roof bracket or flat roof bracket
- Plug / connection
- No UK plug: EcoFlow UK FAQ says the STREAM BKW DIY cable must be connected to the distribution board by a professional installer or electrician
- Cable length
- Not published
Warranty and compliance
- Panel warranty
- Not published
- Panel performance warranty
- Not published
- Inverter warranty
- 10 years
- ENA register
- ECOFL/21128/V1/A3 (compliant)
Notes from our research: Variants: pitched or flat roof; 2 x 400 W (800 Wp), 2 x 450 W (900 Wp) or 2 x 520 W (1040 Wp); panel count is 2 in every variant. ENA ref ECOFL/21128 supplied by caller; could not independently confirm the register model text online. Microinverter specs (all EcoFlow UK STREAM pages identical): 2 MPPT, 600 W max per channel, 65 V max input, 20 V start-up, 16-60 V MPPT range, 16 A max/short-circuit current per MPPT, 800 VA rated output, 3.48 A, 230 V (183-276 V), IP67, -40 to 65 °C, 3.2 kg, 252 x 180 x 35 mm, 10-year warranty, 2.4 GHz Wi-Fi only. Product code EFSTREAMMI800W per Eco Wizard listing. No EcoFlow datasheet PDF found; peak/EU efficiency not published on the UK pages. Panels are EcoFlow 'Rigid Solar Panel' of 400 W, 450 W, 520 W (2 panels) or 250 W (4 panels) depending on variant; panel model, maker and electrical data not given on the UK product pages, so all panel fields are null. Important for UK: the EcoFlow UK FAQ states the BKW DIY cable must be connected to the distribution board by an electrician, i.e. not a plug-in-to-socket install as sold on uk.ecoflow.com.
Sources for these specs (2)
- uk.ecoflow.com (retailer listing): variants/prices (Shopify .json) and microinverter specs, IP, weight, warranty, Wi-Fi FAQ, UK wiring FAQ, roof bracket options
- ecowizard.co.uk (retailer listing): microinverter product code EFSTREAMMI800W
Good for: Flat roofs (based on the mounting included)
Every compliant kit, ranked
This kit is highlighted. Click any column to rank by it.
For Birmingham, south-facing on a garden stand (30°), medium daytime use.
| Rank | Kit | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 4.9p | 3.8 yrs | £124 | 985 kWh | £468 | £0.45/W | 1030 Wp | – | 10 yrs | 12 yrs | |
| 2 | 5.1p | 3.7 yrs | £120 | 891 kWh | £444 | £0.48/W | 930 Wp | 23.3% | 25 yrs | 12 yrs | |
| 3 | 6.0p | 4 yrs | £114 | 766 kWh | £449 | £0.56/W | 800 Wp | – | – | 10 yrs | |
| 4 | 7.2p | 3.7 yrs | £96 | 493 kWh | £348 | £0.68/W | 515 Wp | – | 10 yrs | 12 yrs | |
| 5 | 7.3p | 3.8 yrs | £97 | 503 kWh | £360 | £0.69/W | 525 Wp | – | 10 yrs | 12 yrs | |
| 6 | 7.3p | 4.9 yrs | £114 | 766 kWh | £549 | £0.69/W | 800 Wp | – | – | 10 yrs | |
| 7 | 7.6p | 3.7 yrs | £92 | 455 kWh | £336 | £0.71/W | 475 Wp | – | 10 yrs | 12 yrs | |
| 8 | 7.7p | 3.7 yrs | £91 | 446 kWh | £336 | £0.72/W | 465 Wp | – | 10 yrs | 12 yrs | |
| 9 | 8.3p | 7.5 yrs | £130 | 1181 kWh | £963.04 | £0.76/W | 1260 Wp | 23.3% | 10 yrs | 10 yrs | |
| 10 | 8.4p | 6 yrs | £118 | 853 kWh | £699 | £0.79/W | 890 Wp | – | 10 yrs | 10 yrs | |
| 11 | Perlight PowerPlug MAX 1000WPerlight SolarUnknown | 8.7p | 6.7 yrs | £122 | 957 kWh | £810 | £0.81/W | 1000 Wp | 23.1% | 30 yrs | 12 yrs |
| 12 | 8.7p | 6.4 yrs | £119 | 881 kWh | £749.99 | £0.82/W | 920 Wp | 23% | 25 yrs | 10 yrs | |
| 13 | 9.0p | 6.4 yrs | £118 | 853 kWh | £749 | £0.84/W | 890 Wp | – | 10 yrs | 10 yrs | |
| 14 | 9.0p | 6.6 yrs | £119 | 881 kWh | £779 | £0.85/W | 920 Wp | – | 10 yrs | 10 yrs | |
| 15 | 9.0p | 7.2 yrs | £124 | 985 kWh | £871.40 | £0.85/W | 1030 Wp | 23.2% | 10 yrs | 10 yrs | |
| 16 | Perlight PowerPlug MAX 930WPerlight SolarUnknown | 9.2p | 6.8 yrs | £120 | 891 kWh | £798 | £0.86/W | 930 Wp | 23.2% | 30 yrs | 12 yrs |
| 17 | UKSOL Pro Duo 890W Hybrid Mount KitUKSOLUnknown | 10p | 7.3 yrs | £118 | 853 kWh | £849 | £0.95/W | 890 Wp | 22.3% | 10 yrs | 10 yrs |
| 18 | 10p | 7.3 yrs | £118 | 853 kWh | £849 | £0.95/W | 890 Wp | 22.3% | 10 yrs | 10 yrs | |
| 19 | 11p | 5.1 yrs | £89 | 426 kWh | £449 | £1.01/W | 445 Wp | – | 10 yrs | 10 yrs | |
| 20 | 12p | 6.2 yrs | £96 | 493 kWh | £583.39 | £1.13/W | 515 Wp | 23.2% | 10 yrs | 10 yrs | |
| 21 | 12p | 5.9 yrs | £91 | 441 kWh | £529 | £1.15/W | 460 Wp | – | 10 yrs | 10 yrs | |
| 22 | Perlight PowerPlug MAX 500WPerlight SolarUnknown | 13p | 6.4 yrs | £94 | 479 kWh | £594 | £1.19/W | 500 Wp | 23.1% | 30 yrs | 12 yrs |
| 23 | 13p | 6.1 yrs | £91 | 441 kWh | £549.98 | £1.20/W | 460 Wp | 23% | 25 yrs | 10 yrs | |
| 24 | Perlight PowerPlug MAX 465WPerlight SolarUnknown | 13p | 6.5 yrs | £91 | 446 kWh | £588 | £1.26/W | 465 Wp | 23.2% | 30 yrs | 12 yrs |
Only ENA-compliant kits with a UK price are ranked. Highlighted = best in each column. Click a column to rank by it; overall rank is cost per kWh over 10 years. “–” means the maker doesn’t publish it. How we rank.
Price and stock history
What owners report
No owner reports yet. Own one? Share your numbers.
Questions
Is the EcoFlow STREAM Roof Kit compliant in the UK?
Yes. EcoFlow STREAM Roof Kit is listed as Compliant on the ENA type-test register (ECOFL/21128/V1/A3), which the GB rules require for plug-in solar.
Where is the EcoFlow STREAM Roof Kit in stock?
Not in stock at EcoFlow UK for £549. We check 6 listings regularly; see the table for each retailer.
How much electricity does the EcoFlow STREAM Roof Kit generate?
About 766 kWh a year facing south on a garden stand in Birmingham, from PVGIS data with the 800W output cap applied. Set your own postcode and direction for your figure.