Overview
- The Stream Ultra X provides 3.84 kWh of usable capacity, which EcoFlow says doubles its previous top model.
- It accepts up to 2,000 Wp across four solar inputs and buffers generation above the 800 W feed-in limit into its battery.
- Two integrated AC sockets supply devices directly with up to 2,300 W without feeding into the household grid.
- Mains charging reaches 1,200 W for time-of-use tariff optimization, and the system can expand modularly up to 23 kWh.
- The device is available immediately and launched at €1,299, with the manufacturer indicating a €1,499 price point thereafter; it weighs about 40 kg and works with smart-meter platforms from EcoFlow, Shelly and Tibber.