EcoFlow STREAM Ultra X
Ready for true energy freedom? Power your home, reduce your bills, and take control with the STREAM Ultra X - a part of the EcoFlow STREAM plug-and-play solar system.
For safe, compliant and efficient operation, make sure to read and follow the important Safety and Legal Notice provided at the end of this page.
Key Features
- STREAM Ultra X: 3.84kWh battery
- Expandable capacity up to 11.52kWh
- 2,000W PV input (4 × 500W), with 4 MPPT controllers
- Max device power supported: 2,300W (10A)
- 1200W AC output
- Low-temperature self-heating below 5 deg C, ready for winter conditions
- Quiet operation (<30 dB) and IP65 weatherproofing for outdoor use
- 10-year warranty - designed to retain
- 70% of the original battery capacity after 6,000 full charge/discharge cycles
- Requires installation by a licensed electrician. Contact us today for a referral to a trusted installation partner.
Power Big. Power Small. Power It All.
Three smart setups to cover every need — all powered by the sun.
2300W Parallel ModeDevice Setup: 1 × STREAM Ultra X + 1 × STREAM Ultra or STREAM AC Pro (connected with parallel cable) Powers high-wattage appliances like ovens and dishwashers. Output: 1,200W + 1,100W = 2,300W total |
2000W Distributed ModeDevice Setup: 1 × STREAM Ultra X + 1 × STREAM Ultra or STREAM AC Pro (plugged into separate wall sockets) Solar powers up to 2,000W, with support for 2,300W when needed. Output: 1,200W + 800W + 300W = 2,300W total |
1200W Single Unit ModeDevice Setup: 1 × STREAM Ultra X Ideal for running everyday essentials like TVs, cookers, and fans. Output: 1,200W from a single battery |
Technical Specifications
| Capacity | 3.84kWh |
| Cycle Life | 6,000 cycles to 70% capacity |
| AC Charging Input | 1,200W |
| AC Output | 1,200W |
| MPPT | 4 |
| PV Input Power | 2,000W (500W × 4) |
| AC Output (Grid-Tied) | 800W |
| Max Device Power Supported | 2,300W (10A) |
| Battery Self-Heating | Activates at ≤5°C |
| Ingress Protection | IP65 (weatherproof) |
| Dimensions | 420mm x 294mm x 460mm |
| Weight | 38.8 kg |
| Operating Temperature | -20°C to 55°C |
| Connectivity | Wi-Fi / Bluetooth (EcoFlow App) |
| Noise Level | <30 dB |
| Warranty | 10 Years |
How to connect the STREAM Power Plant to the Home Electrical Wiring
Although the EcoFlow STREAM Ultra and STREAM Ultra X are designed for straightforward installation and use, they are solar battery systems and are not covered by the new UK plug-in solar regulations coming into force on 27 August 2026. Those regulations apply to compliant plug-in solar microgenerators only and the government’s Interim Product Specification specifically excludes plug-in batteries and solar-plus-battery systems.
For use in the UK, the STREAM Ultra and STREAM Ultra X should therefore be permanently connected to the property’s electrical installation by a suitably qualified electrician, normally through a fused connection unit or other compliant dedicated connection, in accordance with BS 7671, applicable DNO/grid-connection requirements and the EcoFlow STREAM Safety and Legal Notice. The installer must assess the existing circuit, protective devices, labelling, earthing and RCD/RCBO arrangements before connection.
Battery energy storage systems should be installed in a suitable location, taking account of PAS 63100:2024 guidance, fire safety, ventilation, access, manufacturer instructions and the electrical condition of the property. Habitable-room installation may not be suitable. The STREAM Ultra X is IP65 rated, which makes outdoor installation possible where the site, mounting, cable routing and environmental conditions are appropriate.
This summary is for general product information only and does not constitute legal, electrical or professional advice. Customers should always consult a qualified electrician or competent designer before installation.
Energian can help you review your installation and, where appropriate, connect you with a qualified electrician or trusted partner to handle mounting, wiring and commissioning.
Below is a photo of a fused spur:
IMPORTANT SAFETY AND LEGAL NOTICE
Follow the safety and installation guidance provided in PAS 63100:2024 here when setting up this kit. Under new guidance, batteries must not be installed in residential spaces; they are best installed in non‑habitation spaces, outside or in an outbuilding meeting prescribed conditions.
Where multiple STREAM Units are used in one property, we recommend the cascaded configuration as described in the user manual. Although a distributed configuration is possible, it's the installer's responsibility to design and implement a system that complies with UK regulations, in particular the General Wiring Regulations. This typically disallows more than one input point per circuit. If in doubt, consult a qualified professional.