External battery Stream Ultra

Scalable capacity of up to 1152 kWh and ultra-quiet operation at only 30 dB: power your home peacefully day and night. Enjoy reliable solar energy that can be scaled according to your needs without any annoying noise.

ALL-IN-ONE HYBRID SYSTEM

The smart core of the EcoFlow STREAM kit combines energy storage and built-in micro-inverter into an optimized solution.

HOW TO BRING YOUR ELECTRICITY BILLS TO 0?

When the sun rises in the morning, the EcoFlow STREAM Ultra immediately captures solar energy for your home, automatically storing any surplus. At night, this stored energy powers your devices directly or via the grid. Producing up to 3,660 kWh per year, it meets 713% of household needs, thus reducing the electricity bill to nearly zero.

DUAL MODE SOLAR INPUT 2,800 W

EcoFlow STREAM Ultra features a 4 MPPT design supporting up to 2,000 W of solar input. It also works with third-party micro-inverters; connecting to the solar battery adds an additional 800 W. Maximizes electricity production from each sunny area.

AC OUTPUT 2,300 W

Power two devices independently via two AC sockets with a power of 1,200 W per battery and an auto-boost of up to 2,300 W. Pair it with another STREAM Ultra or STREAM AC Pro for a total AC output of 2,300 W. The built-in battery ensures off-grid use and backup power during outages.

ONE STEP CLOSER TO 0 BILLS

Build your home solar kit around EcoFlow STREAM Ultra.

• Power high-wattage devices - AC output of 2,300 W
• Power available everywhere - Ready to use | Vertical design
• Unique power - Scalable to 1152 kWh | Share energy between devices

BIG OR SMALL, POWER EVERYTHING

Aim for a "near 0 bill" with 4 smart configurations. From lights and routers to refrigerators and kettles, the EcoFlow STREAM series powers devices up to 2,300 W, all with solar energy.

VARIOUS MODES

• Parallel mode up to 2,300 W solar coverage
  2,300 W : Device configuration : 1 STREAM Ultra + 1 STREAM Ultra or STREAM AC Pro
  Connect two units with a parallel cable to power high-wattage devices like ovens and dishwashers - all powered by solar energy.
  Output: 1,200 W (main) + 1,100 W (secondary) = 2,300 W total output
  
• Distributed mode up to 2,000 W solar coverage
  2,000 W : Device configuration: 1 STREAM Ultra + 1 STREAM Ultra or STREAM AC Pro
  No cable needed: just plug each device into separate wall sockets. Solar power up to 2,000 W with total power support up to 2,300 W if needed.
  Output: 1,200 W (main) + 800 W (secondary) + 300 W (grid) = 2,300 W total output
  
• Single unit mode Up to 1,200 W solar coverage
  1,200 W: Device configuration : 1 STREAM Ultra
  One unit powers your everyday essentials - perfect for running TVs, stoves, fans, and more with ease.
  Output: 1200 W from a single battery

FUNCTION FOLLOWS FORM POWER GOES WHERE THE DEVICE IS

Devices are spread throughout your home. Your batteries should be too. That’s how you achieve near 0 bills.

• Plug-and-Play: No drilling required, easy setup anywhere
  Quick and plug-and-play installation without needing an electrician
  
• Vertical design: ULM design philosophy “form follows function”
  A sleek vertical design saves more than 50% of space suitable for indoor and outdoor areas
  

LONGER RUNNING TIME WITH SCALABLE CAPACITY AND SOLAR INPUT

EcoFlow STREAM Ultra offers flexible solar storage and PV input expansion - extending solar storage from 192 to 1152 kWh³ and PV input expansion from 2 kW (4 MPPT) to 12 kW (24 MPPT) with up to 6 connected units. Easily pair two units to double your capacity or integrate with EcoFlow DELTA batteries for even greater storage.

MORE SAVINGS AND LESS CALCULATIONS THANKS TO SOFTWARE

• Save more - HP/HC mode | Solar forecasts
• Smart savings - Compatible smart accessories
• Save easily - AI assistant
  

DYNAMIC ELECTRICITY PRICING BY HOURLY USAGE (HP/HC)

Charge when prices are low, power when prices are high.
The HP/HC mode gives you the optimal savings strategy every 60 minutes based on tariff data analysis from Nord Pool Epex Spot Rabot Energy Octopus and more.

SOLAR AND WEATHER FORECASTS FOR MAXIMISING YOUR SAVINGS ALL YEAR ROUND⁶

Powered by solar and weather forecasts from Solcast, a global leader processing over 100 million forecasts per hour - including geolocation, satellite imagery, historical data, and TMY (typical meteorological years) to provide real-time insights and savings.

COMMUNICATING METER AND SMART PLUG: ZERO INJECTION. ALL SOLAR, ALL FOR YOU

EcoFlow works with top smart energy brands like Shelly, Tibber, and more, managing the power of your home with the communicating meter, smart plugs, and the EcoFlow app. Automatically operate devices like your irrigation, electric bike, or ventilation using surplus solar power. Let every ray of sunshine stay with you.

• Communicating meter - monitor :
  Monitors energy flow in real-time = accurately detects every surplus watt.

• Smart plug - switch:
  Automatically switches each device to use every surplus watt effectively.
  
• Smart app - program:
  Intelligently schedules surplus energy, automatically deciding when and where to use it to save money.
  

AI ASSISTANT ECOFLOW: NO MATH. JUST SAVINGS.⁸

Your AI assistant simplifies energy management by doing the complicated work for you: data analysis, spotting inefficiencies, and formulating clear, concrete recommendations. No calculations, no assumptions, just smart and easy decisions.

A TRUSTWORTHY SAFETY

Integrated into both hardware and software

• Flame-retardant casing - Aerogel thermal insulation withstands extreme heat and flames.
• Multi-layer protection - Overload, overheating, and explosion-proof safety layers.
• Backflow protection - Prevents reverse current and stabilizes your home network.
• Fast voltage drop - Drops to a safe voltage in just 07 seconds once unplugged.
• Smart battery management - The AI system optimizes charge cycles and prolongs battery life.
• Privacy and data protection - Certified according to global security and compliance standards.
  

SUSTAINABLE POWER WITH LFP TECHNOLOGY

Equipped with advanced LFP battery cells, STREAM delivers up to 6,000 deep cycles with 70% capacity retention - a lifespan up to 3 times longer than traditional batteries. This means up to 15 years of reliable use.

WHISPER-QUIET OPERATION AT ONLY 30 DB

Enjoy silent operation with sound levels of just 30 dB. The advanced self-cooling design dissipates heat efficiently. No disruptive fan noise, just quiet and reliable power.