EcoFlow STREAM AC Solar Battery — AC-coupled, no panels

EcoFlow STREAM AC Solar Battery EFSTREAMAC5000-EU

Photo from the manufacturer

AC-coupled, no panels F3 · Flat-sized (3–8 kWh)

EcoFlow EcoFlow STREAM AC Solar Battery

Name: EcoFlow STREAM AC Solar Battery
Brand: EcoFlow
SKU: EFSTREAMAC5000-EU
Author: JouleSpecs

Estimated price range

1000–2200 € ≈ $1,080–$2,376

An editorial estimate, not a selling price

JouleSpecs does not sell and does not show shop prices: check the price where you buy.

Where to buy

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Data from official source

Sheet curated by JouleSpecs — We check every spec sheet against the manufacturer's own documentation: each value carries its source and the date we read it. Published Sept. 20, 2026 · Last updated Sept. 22, 2026 · Data verified Sept. 22, 2026

STREAM AC Solar Battery is a battery that couples in alternating current: it has no inputs of its own for panels, and connects instead to a solar system already installed at home through its grid port, or to the grid alone if there's no system yet. It's built for anyone who already has an inverter and doesn't want to touch the DC wiring on the roof: the connection runs through a normal home outlet, or permanently through a qualified electrician who attaches it to the panel.

It recognizes smart meters from other brands already installed, like Shelly, HomeWizard or Tibber, without having to replace them with EcoFlow ones. With a dynamic or time-of-use tariff, the app can charge the battery in the hours when energy costs less and discharge it in the more expensive ones, working out the most convenient combination on its own. It's a floor-standing unit, built to stay put once installed; growing beyond the single unit's capacity needs a dedicated expansion battery, stackable on top or alongside.

It suits anyone who wants to add storage to a solar system they already have, without dismantling existing panels or inverter. It isn't the right choice for anyone looking for a portable system or starting from zero with no solar system at all: in that case, panels are still needed, and here they're neither included nor directly connectable.

01 · Verified data

Technical specifications

Cell chemistry LFP (lithium iron phosphate)

Feed-in limit 800 VA

Cost per kWh 338,18 €/kWh

official manufacturer list price — on nominal capacity

Round-trip efficiency EcoFlow does not state it.

where we looked

Standby consumption EcoFlow does not state it.

where we looked

Parameter	Value	Source
Weight	44.6 kg (98.3 lb)	manufacturer website
Nominal capacity	5.024 kWh	Declared by the brand
Cell chemistry	LFP (lithium iron phosphate)	Declared by the brand
Expandable	Yes	Declared by the brand
Maximum expanded capacity	15 kWh	Declared by the brand
Battery voltage	16 V	Declared by the brand
Feed-in limit	800 VA	Declared by the brand
Inverter included	No	Declared by the brand
Grid charging	Yes	Declared by the brand
Dynamic tariffs	Built in	Declared by the brand
Backup power	EPS (brief interruption)	Declared by the brand
Backup output	2500 W	Declared by the brand
Rated cycles	10000 cicli	Declared by the brand
Capacity at end of cycle life	60 %	Declared by the brand
Warranty	10 anni	Declared by the brand
Ingress protection	IP65	Declared by the brand
Mounting	Floor standing	Declared by the brand
Minimum temperature	-20 °C	Declared by the brand
Maximum temperature	55 °C	Declared by the brand
Declared standards	CE, VDE-AR-N 4105, EN 50549, CEI 0-21, G98 / G99, IEC 62477	Declared by the brand
Official list price	1699 €	Declared by the brand
Usable capacity	—	Not declared
Depth of discharge	—	Not declared
Cell supplier	—	Not declared
Maximum solar input	—	Not declared
MPPT trackers	—	Not declared
Maximum charge power	—	Not declared
Switchover time	—	Not declared
Guaranteed throughput	—	Not declared
Guaranteed remaining capacity	—	Not declared
Round-trip efficiency	—	Not declared
Standby consumption	—	Not declared
Cell heating	—	Not declared
Noise level	—	Not declared
Works without internet	—	Not declared
Local control	—	Not declared
Open protocols	—	Not declared
Home Assistant integration	—	Not declared
Where the data is hosted	—	Not declared
Remote updates	—	Not declared
App required for setup	—	Not declared
Battery passport	—	Not declared
Carbon footprint	—	Not declared
Recycled content	—	Not declared

Which documents this page rests on

ecoflow stream ac 5000 handleiding 36 rows of the table

The rest of the data comes from one page on the manufacturer's site, cited row by row in the table above.

A manual or a datasheet counts as a source even when the original file is hosted elsewhere: what matters is the document, not the server. Where that happens, it is stated above.

02 · The numbers

What it really costs

Cost per kWh 338.180 €/kWh official manufacturer list price — on nominal capacity

How we worked it out

price: 1699
nominal capacity: 5.024

Battery life cycles 3650 cycles warranty years

the manufacturer does not state the guaranteed total energy throughput, which for heavy users is often the limit that runs out first

How we worked it out

stated cycles: 10000
warranty years: 3650

Cost of stored energy 0.093 €/kWh warranty years

the manufacturer does not state the guaranteed total energy throughput, which for heavy users is often the limit that runs out first
on nominal capacity: the manufacturer does not state the usable figure, so the real cost is higher
without conversion losses, which the manufacturer does not state: the real cost is higher

How we worked it out

price: 1699
nominal capacity: 5.024
battery life cycles: 3650
round-trip efficiency: 100
energy delivered over the whole life: 18338

Energy density 112.600 Wh/kg

on nominal capacity: the manufacturer does not state the usable figure, so the true number is lower

How we worked it out

nominal capacity: 5.024
weight: 44.600

These numbers are calculated, not stated: they have no source to cite, they have a formula you can redo. The price used is the manufacturer's list price, which is stable and the same in every country — not a shop's price on the day.

03 · Summary

Pros and cons

In favour

It pairs with an already existing solar system without touching panels or inverter: the connection runs through the AC port alone.
It recognizes smart meters from other brands already installed, like Shelly, HomeWizard or Tibber, without having to replace them. source
With the dynamic tariff, the app can charge the battery when energy costs less and discharge it when it costs more.
It grows beyond the base capacity by stacking dedicated expansion batteries onto the same unit.

Worth knowing

It has no inputs of its own for panels: it needs an already existing solar system, or it stays connected to the grid alone.
It's a floor-standing unit built for a fixed installation, not for moving from one room to another.
The fixed connection to the panel, where local rules require it, has to be done by an electrician: it isn't always a job to handle alone.

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