The energy revolution in your own home is entering the next round: with the EcoFlow STREAM Ultra X, the manufacturer is launching a powerful, flexible and smart solution for all those who rely on solar energy – and don’t want to compromise on space or performance. The new balcony power station scores with double the capacity, smart technology and an unbeatable price-performance ratio.
Highlights
- Storage capacity of 3.84 kWh, expandable up to 23 kWh
- 4 MPPTs for optimized solar power even in low light conditions
- Seamless integration with smart home ecosystems and 10-year warranty
Compact performance with impressive efficiency
The EcoFlow Stream Ultra (€ 1,099.00 *) is getting an even more powerful version. And it really packs a punch in terms of its technical data. The STREAM Ultra X delivers a continuous output power of 2,300 W, which in practice means that the majority of household appliances – including washing machines, fridges and kettles – can be operated with it without any problems.
The compact design is particularly interesting. Instead of two separate units as in the previous STREAM Ultra series, the Ultra X combines twice the capacity in a single module. This saves space, reduces complexity and significantly increases charging performance when connected to the mains. The price is also impressive.
At just €390.40 per kilowatt hour of storage, the system is one of the most attractive offers in its class. The Ultra X offers real added value, especially for users with limited living space or balcony installations. EcoFlow is clearly positioning itself as a provider of smart and powerful plug & play energy that does not require any major conversions or specialist knowledge.
Intelligent technology for maximum solar yield
A key highlight of the STREAM Ultra X is its ability to work efficiently even in less than ideal light conditions. This is made possible by four integrated MPPTs (Maximum Power Point Tracker). This technology ensures that maximum solar energy is used even in cloudy or partially shaded conditions.
In addition, the storage system can be expanded on a modular basis – up to 23 kWh are possible. This means that if you want to start small today, you can upgrade the system as your energy requirements grow without having to replace the basic appliance. This scalability makes the STREAM Ultra X particularly interesting for young households, tech-savvy families or users with the long-term goal of greater energy self-sufficiency.
Future-proof with smart integration
What sets the STREAM Ultra X apart from other solutions is its seamless integration into existing smart home systems. It is fully compatible with the EcoFlow ecosystem and supports third-party platforms such as Shelly 3EM (€ 69.85 *), Shelly Pro 3EM (€ 89.89 *) and Tibber.
This enables targeted control of energy consumption and optimized use of solar energy – for example through intelligent charging times. The time-of-use function is particularly worth mentioning. This allows electricity to be purchased when it is cheapest – supported by AI-based energy planning that incorporates weather data, usage behavior and energy prices into the forecast.
EcoFlow therefore not only provides hardware, but also a clever software solution that actively adapts to the user’s needs. EcoFlow also sets an example in terms of safety and reliability: The STREAM Ultra X comes with a 10-year warranty – a clear signal of longevity and confidence in its own technology.
Conclusion: Smart energy for today and tomorrow
The EcoFlow STREAM Ultra X is far more than just an upgrade – it is a logical step towards an energy self-sufficient household. Anyone interested in plug & play solar will find a system here that ideally combines technology, efficiency and sustainability. Available from August 6, 2025 for €1,499, with early bird discount for €1,299 until September 15 – exclusively at EcoFlow and Amazon.
Images: EcoFlow
