EcoFlow STREAM Ultra

Ready for true energy freedom? Power your home, reduce your bills, and take control with the STREAM Ultra plug-and-play solar system.

Key Features

• Expandable capacity up to 11.52kWh (connect up to 6 units)
• 2,000W PV input (4 × 500W), with 4 MPPT controllers
• Max device power supported: 2,300W (10A)
• Low-temperature self-heating, 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. 
• Refer to the important safety and legal notice at the end of this listing.

Power Big. Power Small. Power It All.

Three smart setups to cover every need — all powered by the sun.

2300W Parallel Mode Device Setup: 1 × STREAM Ultra + 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 Mode Device Setup: 1 × STREAM Ultra + 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 Mode Device Setup: 1 × STREAM Ultra Ideal for running everyday essentials like TVs, cookers, and fans. Output: 1,200W from a single battery

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Technical Specifications

Capacity	1.92kWh
Cycle Life	6,000 cycles to 70% capacity
AC Charging Input	1,050W
AC Output	1,200W
MPPT	4
Range of MPPT voltage	15V-60V⎓
MPPT max input current	14A (20A max short circuit current)
PV Input	2,000W (500W × 4) Per input:
AC Output (Grid-Tied)	800W
Max Device Power Supported	2,300W (10A)
Battery Self-Heating	Activates at ≤5°C
Ingress Protection	IP65 (weatherproof)
Dimensions	284 × 255 × 458 mm
Weight	23.1 kg
Operating Temperature	–20°C to 55°C
Connectivity	Wi-Fi / Bluetooth (EcoFlow App)
Noise Level	<30 dB
Warranty	10 Years

In The Box

1 x STREAM ULTRA

8 x 2.95m MC4 solar cables

1 x STREAM DIY Cable (1.5m) 

1 x PV Wrench

1 x Loading bracket

1 x Mounting bracket

Documentation

How to connect the STREAM Power System 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 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.