EcoFlow STREAM Ultra X Plug-in Home Battery

The EcoFlow STREAM Ultra X is a plug-in home battery that gives you more control over your own energy. It stores solar energy directly and lets you use it whenever it suits you, for example in the evening. With 3.84 kWh of storage, four MPPT inputs for solar panels up to 2000 W, and an integrated inverter, you can start using your own energy without any complex installation. The modular system is easy to expand and fits well with everyday energy use.

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Ready to use instantly

Smart energy distribution

Suitable for indoor and outdoor use

Expandable system from 3.84–23 kWh

How does a plug-in home battery work with solar panels?

The EcoFlow STREAM Ultra X is designed to match how energy is used in your home. This plug-in home battery stores solar energy and automatically supplies it when needed.

During the day, solar panels generate energy. This power is first used directly by devices in your home. Any surplus energy is stored in the battery. When solar production drops, the system uses this stored energy and feeds it back into your home through a standard wall socket.

The system continuously switches between:

direct power for appliances
storing solar energy in the battery
feeding energy back to the grid

All of this happens automatically, based on your real-time energy consumption.

Power and storage of a plug-in home battery

By adding a second STREAM unit, the available power increases to approximately 2300 W. This gives you more flexibility to run multiple and higher-consumption devices at the same time, depending on your total usage and electrical setup.

For example:

washing machine
kitchen appliances
power tools
fridge and freezer

The integrated battery capacity of 3.84 kWh provides a solid base for daily use. Stored energy can be used when your household needs it, for example in the evening or during periods of lower solar output. If more storage is required, the system can be expanded up to 23 kWh, allowing it to grow with your energy usage and solar generation.

Why choose the STREAM Ultra X plug-in home battery?

Smart energy management with AI and app

The EcoFlow STREAM Ultra X automatically adjusts charging and discharging based on your energy usage. This allows solar energy to be used more efficiently and ensures the system aligns with your daily consumption. Through the EcoFlow app, you get real-time insights into generation, usage, energy flows and savings. The system can also be easily integrated with smart platforms such as Tibber, Matter and Shelly, creating a connected energy ecosystem in your home.

Active energy distribution in your home

The STREAM Ultra X doesn’t just store energy, it actively uses it at the right moments. When power is needed, the system automatically adjusts its output and delivers energy where required. When combined with smart plugs or a smart meter, this can be even more precisely aligned with your actual consumption.

Flexible placement, one smart system

The STREAM Ultra X is not limited to a single location. You can place multiple units in one space or distribute them across different areas of your home, such as a balcony, garden or another room. Through WiFi and your existing electrical network, the units work together as one system, each contributing to your overall energy use.