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EcoFlow

EcoFlow STREAM Flat Roof Kit 900W

Stock status : Out of stock

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EcoFlow STREAM Flat Roof Kit 900W with 2 solar panels, EcoFlow STREAM microinverter and flat roof, fixed angle mounting hardware

The 900W EcoFlow STREAM Flat Roof Kit is a 900W 2-panel plug-in solar kit supplied by EcoFlow.

This kit combines 2 EcoFlow 450W solar panels with an 800VA EcoFlow EF-PS-800 STREAM microinverter and a fixed mounting system for flat-roof installation.

Price including delivery:£599
View at EcoFlow(paid link)

ENA compliance

What’s included

Panels

  • 2 × 450W EcoFlow panels
  • 900W total panel capacity
  • Monocrystalline
  • 23% module efficiency

Microinverter

  • EcoFlow EF-PS-800 STREAM
  • 800VA maximum AC output
  • 2 PV input channels
  • 2 independent MPPTs

Mounting system

  • Suitable for flat-roof installation
  • Fixed mounting angle

AC & DC cables

  • AC cable length not specified by supplier
  • DC cable length not specified by supplier

Warranty

  • 10 year microinverter warranty
  • 12 year solar panel warranty

Pros & cons

Pros

  • Panels can work independently: Two independent MPPTs allow the microinverter to manage each panel separately, so shading or a different orientation on one panel does not affect the performance of the other.
  • High-efficiency panels: The supplied EcoFlow panels deliver 23% module efficiency.
  • Built-in ballast support: The supplied flat-roof frame includes a dedicated slot for concrete ballast, making it straightforward to add weight and secure the panels without drilling into the roof surface.
  • Low-profile mounting angle: The shallow panel angle keeps the installation relatively low to the roof, reducing its exposure to wind and helping to limit uplift. It also keeps the panels comfortably below the 60cm projection limit that can apply under permitted development rules.

Cons

  • Limited panel tilt: The trade-off of the low-profile mounting design is that the panels cannot be tilted to a steeper, more optimal angle for solar generation, so annual output may be slightly lower than with a more adjustable mounting system.
  • Cable lengths are not specified: EcoFlow does not state the supplied AC or DC cable lengths, so confirm that they suit your intended installation before buying.
  • Prices can fluctuate: EcoFlow often moves products in and out of promotional pricing, so current prices may not stay the same for long.

Detailed kit specification

The full known specifications for the solar panels and microinverter supplied with the EcoFlow STREAM Flat Roof Kit 900W are shown below.

Solar panels

Manufacturer
EcoFlow
Quantity
2 panels
Rated power
450W per panel (900W total)
Technology
Monocrystalline
Dimensions
191 × 113 × 4cm per panel
Weight
22.4kg per panel
Module efficiency
23%
Year 1 degradation
Not specified by supplier
Annual degradation
Not specified by supplier
DC cable length
Not specified by supplier

Microinverter

Manufacturer
EcoFlow
Model
EF-PS-800 STREAM
Maximum output
800VA
PV input channels
2
Independent MPPTs
2
Weight
3.2kg
Peak efficiency
Not specified by supplier
Start-up voltage
20V
Connectivity
Wi-Fi, Bluetooth
AC cable length
Not specified by supplier

Where to buy

The EcoFlow STREAM Flat Roof Kit 900W is available to buy directly from EcoFlow.

Direct from kit supplier

Prices and availability can change. Always confirm the complete kit specification and current price with the retailer before buying.

Other items you may need

This plug-in solar kit includes all of the main equipment needed to get set up, but depending on where and how you install it, there may be a couple of additional items worth considering.

Ballast

The flat-roof mounting frame is designed to be weighted down with ballast. You’ll need suitable ballast blocks to help keep the frame secure and reduce the risk of movement or uplift. Follow EcoFlow’s instructions for the required weight and positioning.

View ballast blocks at Wickes

Cable protection

If the AC cable runs through an exposed area, split conduit can provide additional protection. Because the plugs and connectors are moulded onto the cable, split conduit can be fitted around it without needing to remove them.

View split conduit on Amazon UK (paid link)

Estimate savings and payback

Estimated solar generation, annual savings and payback period for the EcoFlow STREAM Flat Roof Kit 900W depend on where you live, how the kit is positioned, and crucially, how much of the solar electricity your household uses.

Get a tailored estimate

We’ll pre-fill the calculator with this kit’s 900W panel capacity and £599 price. Just enter your postcode, panel setup and a few details about your household and electricity use to estimate generation, savings and payback.

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