EcoFlow STREAM 5000, STREAM AC 5000 & Extension Battery: Test 2026

Direct answer to the search query

The focus is on “EcoFlow STREAM 5000 & AC 5000 in comparison 2026”. The article provides a concise and objective overview of functionality, operating conditions, compatibility, and key decision criteria.

Briefly categorized

• updated: July 18, 2026
• Suitable for: Readers who are looking for information on “EcoFlow STREAM 5000 & AC 5000 in comparison 2026” or are preparing a decision.
• Limits: Availability, pricing, firmware, compatibility, and regional specifications are subject to change.
• Database: Manufacturer specifications and the technical information mentioned in the article. Check the current manufacturer's documentation before purchasing and installing.

1. Introduction

With the new EcoFlow STREAM Series EcoFlow is expanding its portfolio with a completely new generation of intelligent home energy storage systems. The focus is not only on higher storage capacity and increased performance, but above all on a flexible, modular energy system for diverse applications.

The new series currently includes three core products: the EcoFlow STREAM 5000, the EcoFlow STREAM AC 5000 as well as those EcoFlow STREAM extension battery 5 kWhWhile the STREAM 5000 was designed as a high-performance all-in-one system for new PV installations, the STREAM AC 5000 is aimed at owners of existing solar systems. The expansion battery adds additional storage capacity to both systems and allows for scalable expansion as needed.

But how do the new models differ? Which solution is suitable for which household? And what innovations does the EcoFlow STREAM series offer compared to previous storage systems?

2. EcoFlow STREAM 5000 – The new all-in-one home energy system

The EcoFlow STREAM 5000 It forms the core of the new product series. Unlike conventional battery storage systems, it combines battery storage, inverter, four MPPT inputs, and intelligent energy management in a single device.

With a basic capacity of 5,02 kWh, up to 5.000 W PV input power and an output power of up to 3.000 W The system is aimed at households that want to use as much of their solar energy as possible themselves. Thanks to the four independent MPPT inputs, solar modules can be flexibly aligned, thus achieving high energy yields even with varying roof surfaces.

Another advantage is the modular architecture. The storage capacity can easily be expanded later, so that the EcoFlow STREAM 5000 It grows with the household's needs in the long term. Anyone planning a new photovoltaic system or looking for a fully integrated energy system will find the most powerful solution in the STREAM series here.

3. EcoFlow STREAM AC 5000 – The ideal retrofit for existing solar systems

Not everyone wants to completely replace their existing photovoltaic system. This is precisely why the EcoFlow STREAM AC 5000

As an AC-coupled storage system, it can be installed without replacing the existing solar panels or inverter. Excess solar power is stored and automatically released when electricity consumption increases. This significantly increases self-consumption without requiring major modifications to the existing system.

The integrated bidirectional inverter supports charging and discharging capacities of up to 3.000 W. In combination with the EcoFlow Smart Meter The system analyzes electricity consumption, solar generation, and grid feed-in in real time. Features include: Intelligent Mode, Peak Shaving and OASIS 3.0 They automatically optimize energy flow and help to reduce electricity costs in the long term.

For homeowners with an already installed PV system, the EcoFlow STREAM AC 5000 This makes it a particularly convenient and future-proof retrofit solution.

4. EcoFlow STREAM extension battery 5 kWh – Increased storage capacity in the face of rising energy demand

As self-consumption increases, the need for additional storage capacity often grows as well. EcoFlow offers precisely this solution. EcoFlow STREAM extension battery 5 kWh

Each expansion battery adds further capacity to compatible STREAM systems. 5,02 kWh Storage capacity. Up to two expansion batteries can be installed per main unit, resulting in a total capacity of 15 kWh This can be achieved. Within a complete STREAM system, even up to... 90 kWh Possible storage capacity.

Installation is particularly easy thanks to the modular stacking system. At the same time, the expansion battery takes over all the intelligent functions of the STREAM system and works fully with OASIS 3.0, the EcoFlow Smart Meter, and the EcoFlow App. Thanks to IP65K, integrated self-heating and up to 10.000 charge cycles It is also suitable for long-term daily use.

5. Technical specifications in comparison

feature	EcoFlow STREAM 5000	EcoFlow STREAM AC 5000	EcoFlow STREAM extension battery
Basic capacity	5,02 kWh	5,02 kWh	5,02 kWh
Max. PV input	5.000 W
MPPT	4
AC charging power	3.000 W	3.000 W
Max. charge/discharge power	4.000 / 3.000 W	3.000 / 3.000 W	1.800 / 1.800 W
Gaps	up to 15 kWh	up to 15 kWh	Extension for STREAM systems
Maximum system capacity	90 kWh	90 kWh	90 kWh (system)
Protection class	IP65K	IP65K	IP65K
Charging cycles	10.000	10.000	10.000
Guarantee	10 years	10 years	10 years

6. Which streaming solution is suitable for which household?

Anyone planning a new photovoltaic system and wanting to combine as many functions as possible in one device will be well served by the EcoFlow STREAM 5000 The best. Four MPPT inputs, high PV power and the integrated all-in-one concept make it the most powerful variant in the series.

The EcoFlow STREAM AC 5000 In contrast, this model is aimed at owners of existing solar power systems. Since existing inverters and PV modules can continue to be used, this model is ideally suited for the straightforward retrofitting of a battery storage system.

For households whose energy needs will continue to grow in the future – for example, due to heat pumps, air conditioning or electric cars – the EcoFlow STREAM extension battery 5 kWh The necessary flexibility. The storage capacity can be expanded at any time without having to replace the existing system.

7. Fazit

With the new EcoFlow STREAM Series EcoFlow presents a modern and consistently modular home energy system. Instead of a one-size-fits-all solution, different models are available for various applications.

The EcoFlow STREAM 5000 It impresses as a high-performance all-in-one system for new PV installations. EcoFlow STREAM AC 5000 It offers a particularly simple way to expand existing solar power systems with an intelligent battery storage system. EcoFlow STREAM extension battery 5 kWh It adds extra storage capacity to both systems and creates long-term investment security.

Thanks OASIS 3.0, intelligent energy management, modular expandability up to 90 kWh, 10.000 charge cycles and an 10-year manufacturer's warranty counts the new EcoFlow STREAM Series Already at its market launch, it is one of the most interesting home storage solutions of 2026 and offers a future-proof solution for both beginners and demanding households.

Additional information

• AC or DC solar storage: Differences explained
• Anker Customer service: How to use warranty and support correctly

fitting products

• EcoFlow STREAM series solar battery STREAM 5000
• EcoFlow STREAM AC 5000