The road to nirvana

My journey into Photography, Horology, and Audiophilia

The new EcoFlow STREAM system

January 6, 2026

As a current Powerstream user or new STREAM user, the question is "does it work?"

Conclusion

Does it work? Yes, as long the STREAM AC Pro have the proper firmware.

To me, these are the advantages of the STREAM system over the previous balcony solar system:

  • They're aesthetically pleasing. I have to say it, the Powerstream x Delta 2 Max combo are ugly and cumbersome. These are the STREAM Ultra in the living room and the STREAM AC Pro at the loft.

  • Distributed expansion. This has no direct equivalent with Powerstream x Powerstation combo. The STREAM system also acts like a Smart Plug with batteries which allows it to participate (charging, feeding to the grid) in the system without a connecting cable. Besides, Altitude Digital didn't carry the parallel cable.

    Just plug the provided AC cable to the grid connector of the STREAM and to the house outlet and you're good to go. This distributed way requires the use of the house wiring and may not work when there's a power outage, due to safety reasons. This is the time when you'd need the parallel cable to charge an AC Pro from the Ultra.

    I can install four (4) more AC Pro, or even another Ultra if I disregard the 800W limit and have enough solar panels to feed the additional Ultra.

  • Transparent operation. If you have power consumers plugged in to the AC1 and AC2 outputs of the STREAM units, the power draw from either the battery or the grid is fully automatic. When there's enough charge, the appliances connected to AC1 and AC2 will draw from the battery, otherwise it draws from the grid, operating in a pass-thru mode. Nothing to unplug (from the STREAM unit) and plug (to the house outlet).

On a good day for solar harvest, both the Ultra and AC Pro batteries are already full by around 2pm, so the solar harvest will be throttled just like the Powerstream. If I don't want that solar harvest to go to waste, I scheduled the charging of my Delta 2 extra battery to power my Wave 2 at night, or even run the power hungry LG Dehumidifier, so that the solar harvest goes to these devices instead of being "thrown away" by the system.

This is actually a good case to add another EcoFlow STREAM AC Pro, as the solar harvest is capable of charging the three units, again only on good days.

Configuration

The system is currently maxed-out powering most of the appliances in the house. With my method of charging the Wave 2, I plan  to do the same with my Delta 2 Max + extra battery, so that I can power other high-draw appliances in the house. This can easily be done using the automation feature.

How much does all these cost? Here's a breakdown of the units.

Not too bad for a DIY full hybrid system that doesn't need an electrician or Meralco intervention.