How does it work to utilize solar energy?
As the morning sun rises, EcoFlow STREAM Ultra, equipped with a built-in grid-tied microinverter, immediately captures solar energy for your home and automatically stores any surplus. The stored power runs your appliances at night or during short-term power outages. Generating up to 6424kWh² annually, it meets up to 50% of household needs³ while cutting electricity bills by up to $1027⁴.
Dual-Mode 3,200W Solar Input – Capture More Sunlight for Savings
EcoFlow STREAM Ultra's 4-MPPT design supports 2,000W of solar input, plus an additional 1,200W via the EcoFlow STREAM Microinverter connected to the solar battery—maximizing power generation from every sunlit area.
Max. 1,200W Grid-Tied AC Output⁵ – Power More of Your Home with Solar
EcoFlow STREAM Ultra combines a hybrid inverter and battery into a compact unit that plugs directly into AC sockets (NEMA 5-15/NEMA 5-20) to deliver solar power. Dual AC outlets can power two appliances simultaneously, automatically boosting output to 1,200W for essential household devices.
When the grid is active and STREAM Ultra is connected to your home, your AC circuits run smoothly by fully optimizing solar energy. In an outage, backup power is reserved solely for essential appliances.
1.92–11.52kWh Scalable Capacity – 0 Solar Energy Waste
EcoFlow STREAM Ultra supports flexible DIY solar storage expansion from 1.92kWh up to 11.52kWh. Easily pair two units to double capacity, or integrate with EcoFlow DELTA Series batteries for even greater storage.
Plug & Play⁶: Start Generating Power in Minutes
No Drilling Required
A flexible, drill-free setup makes it easy to place and move—ideal for renters.
Easy DIY Setup
Quick plug-and-play installation—no electrician needed.
SmartLoad Guardian: Built-In Safety Tech
Our AI-driven system monitors loads in real time, dynamically adjusting power flow to ensure all devices operate safely within certified limits.
All-in-One Engineering Excellence
Compact Solar Design: Save Space with a Smaller Footprint
Engineered with a 50% smaller footprint than conventional systems, our ultra-sleek unit blends seamlessly into your living space with concealed cable routing and flush-mount architecture. Tuck it behind curtains, nestle it beside planters, or wall-mount it as functional art—the anodized aluminium finish complements any décor.
LFP Battery
Retain 70% of capacity after 6,000 deep cycles—lasting three times longer than conventional batteries.
It's running with whisper-quiet
STREAM Series batteries feature a fanless thermal design. Heat generated during operation is efficiently dissipated through the integrated heat dissipation module, ensuring whisper-quiet operation below 30 dB.
Reliable winter performance
The intelligent temperature management system automatically activates heating when the battery drops below 0°C, operates smoothly even at -20°C.
NEMA 4 Water-Resistant Rating
With NEMA 4 rating, the energy storage unit is resistant to rain and dust—ideal for outdoor use.
EcoFlow App – Now Smarter with Eco-AI
Manage energy more efficiently and cut your electricity bills.
One-Step Portal for Total Control
Status Overview
Monitor all energy data in real time.
Savings Calendar
Track your daily and weekly savings.
Remote Control
Manage connected devices anytime, anywhere.
Solar Energy Indoors
EcoFlow STREAM Ultra uses AC coupling technology, allowing flexible indoor placement. Simply plug in to store solar energy in any room—directly powering appliances like fridges, washing machines, or coffee makers without the mess of extension cables.
Achieve Nearly 50% Solar-Powered Living² – Minimize Energy Bills with AI
Multiple EcoFlow STREAM Ultra units form an AI-powered home energy network. Surplus solar energy automatically transfers between batteries across different rooms, maximizing solar utilization, boosting self-sufficiency, and reducing electricity costs.
DIY Solar System
4-MPPT Design
Flexible panel installation anywhere.
Compatible with EcoFlow STREAM Microinverter
Unlike typical DC systems, EcoFlow STREAM Ultra is an AC-coupled solution that works seamlessly with the EcoFlow STREAM Microinverter—just plug in and save.
One-Step Plug-and-Play Home Solar System
Set up easily in backyards, gardens, rooftops, and more—transform any space into a solar power station.
STREAM Ultra Specs
Capacity
1.92kWh
Rated Voltage
19.2V⎓
Max.Charging Power
1050W
Max.Discharging Power
1200W
Cell Chemistry & Cycle Life¹
LFP, 6000 cycles to 70% capacity
MPPT（PV Input Power & Voltage)
4 MPPT
2000W (500W × 4)
15V-60V⎓
Max. Input Voltage
60V⎓
Max. Input Current
4 × 14A
Max. Input Short Circuit Current
4 × 20A
Rated AC Output Power (Grid Terminal）
800W
Rated Voltage and Frequency (Grid Terminal）
120V~, 60Hz
Rated Output Current (Grid Terminal）
6.67A
Max. Input (Grid Terminal）
1200W（10A）
Battery Self-Heating
700Low-Temperature Charging Activation (≤5°C)
Ingress Protection Rating
NEMA 4
Operating Temperature²
–20℃ to 55℃
Dimensions
255 × 284 × 458 mm / 10.0 × 11.2 × 18.0 in
Communication
Wi-Fi, Bluetooth
Warranty
10-Year
Acoustic Noise
＜30 dB
Discharge Temperature
–20°C-50°C (–4°F-122°F)
Net. Weight
23.1±0.5kg
Build in Feature
Output Overcurrent Protection, Output Overvoltage Protection, Anti-islanding Protection
