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.
Specs
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
Q&A
- Before purchasing or using this product, please confirm whether your household electricity billing supports net metering.
- If net metering is not supported, you need to use the STREAM system with Shelly Pro 3EM configured for single-phase monitorin. Make sure all STREAM Ultra units are installed on the same phase as the Shelly Pro 3EM (with L2 as an example in the figure) to ensure optimal energy management. After installation is complete, open the Feed-in Control in the app's System Settings. Then go to Energy Delivery Strategy, select Smart Meter Monitoring Mode, and link the Shelly Pro 3EM to begin operation.
Please contact the utility company to confirm whether net metering is supported for your house.
The STREAM Ultra is rated NEMA 4, suitable for indoor/outdoor use. Install in a shaded, ventilated location out of direct sunlight.
No, not supported.
This is not recommended, as malfunctioning devices on the power strip could damage the STREAM Ultra.
The STREAM Ultra can be installed and maintained by users themselves (only available in Utah, USA now).
*Please refer to the Power Connection Requirements section under the Installation Preparation chapter in the Installation Guide to choose the installation method that suits your household situation.
*Each time you change the installation location, please refer to the above information again.
Yes, and it supports connecting STREAM Ultra to third-party microinverterson the market through the AC outlets (NEMA 5-15).
Currently, it only supports 2.4GHz Wi-Fi.
Not necessarily. It might prioritize using one device's power or discharge multiple devices simultaneously. The system employs an intelligent charging and discharging strategy based on the current power levels of the devices, the power consumption of the appliances, the actual connection setup, and your settings in the app. Thus, the discharging performance of specific devices may vary.
Yes, as long as the solar panel meets the conditions of operating voltage (15-60V) and operating current (≤14A). This can optimize solar utilization during low sunlight conditions.
Due to regulatory limits, it is recommended to connect no more than one.
As long as the panels meet the input range for the PV port and use the same type of connector, they can be used. Each PV port’s input range is: operating voltage 15-60V, operating current ≤14A.
For safety and compliance reasons, the STREAM system will automatically detect a grid anomaly and stop feeding current into the grid during a power outage. You can then plug in your appliances directly into the AC outlets to use internal battery or solar power.
For better heat dissipation and device longevity, it must be placed upright.
You can view real-time energy generation statistics on the EcoFlow app.
Yes, a temperature rise during use is normal and does not affect the product’s lifespan. The unit has passed rigorous testing and includes overheat protection. For best performance, install it out of direct sunlight with at least 3 cm clearance from walls or objects, and away from flammable materials.
STREAM Ultra requires connection to both the EcoFlow app and Wi-Fi to enable full features. Bluetooth or LAN-only access limits functionality such as app automations.
All devices must be connected to the same network and added to the same “Space” within the EcoFlow app.
The system prioritizes solar energy. When solar generation falls short of the power demand, the battery automatically steps in to make up the difference. If there’s still a shortfall, the grid supplies the remaining power.
When solar output exceeds consumption, the excess energy is first stored in the battery. Any additional surplus can be exported to the grid, depending on your settings and in compliance with local regulations.
Footnote:
1. When using 1 × EcoFlow STREAM Ultra + 1 × EcoFlow STREAM Microinverter together, the system provides a max. 1200W on-grid AC output. When combining 2–6 × EcoFlow STREAM Ultra (with or without 1 × EcoFlow STREAM Microinverter), the system also delivers a max. 1200W on-grid AC output. A single EcoFlow STREAM Ultra (standalone) has a max. 800W On-Grid AC output.
2. Projected power generation values are based on the use of 1 × EcoFlow STREAM Ultra and 1 × EcoFlow STREAM Microinverter under simulated conditions. Calculations assume 5.5 hours of sunlight per day, using the U.S. as an example, factoring in weather variables such as rain throughout the year.
3. The self-consumption rate is calculated using generation estimates from 1 × EcoFlow STREAM Ultra and 1 × EcoFlow STREAM Microinverter, aligned with average annual U.S. household electricity usage. Actual results may vary based on location, climate, and system setup.
4. The estimated savings are based on projected generation from 1 × EcoFlow STREAM Ultra and 1 × EcoFlow STREAM Microinverter, combined with average U.S. electricity rates. Actual savings may differ due to utility pricing, user habits, and environmental conditions.
5. To ensure electricity stability and safety, please familiarize yourself with your local legal requirements for installation, usage, and electrical grid connection of the Product, and consult with local authorities, utilities, and qualified electrical professionals.
6. Due to restrictions under the H.B. 340 Solar Power Amendments, this product is only available for plug-and-play installation within the state of Utah.
7. Currently, only manual input of electricity prices is supported for U.S. specifications. Certain AI features in the EcoFlow app require a premium subscription. Please refer to the EcoFlow app for details on subscription plans and feature availability.
8. Certain AI features in the EcoFlow app require a premium subscription. Please refer to the EcoFlow app for details on subscription plans and feature availability.
9. Due to restrictions under the H.B. 340 Solar Power Amendments, this product is only available for sale and plug-and-play installation in Utah. Please note that you are solely responsible for ensuring your installation and use of the product strictly comply with applicable laws and regulations regarding where the product is intended to be installed/used.
10. Visuals in some materials may differ from the actual U.S.-specification product design and are for illustrative purposes only. For accurate details, refer to the official product specifications or contact EcoFlow Support.
