Flexible, Upgradable Whole-Home Backup
• Want to start small and expand anytime?
• Prefer lower upfront cost while powering 99% of daily home appliances?
• Like prioritizing and managing the rooms that matter most?
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EcoFlow DELTA Pro Ultra
Since 2021, our smart home energy system EcoFlow DELTA Pro Series has delivered reliable home backup to over 100,000 families.
- 7-Day Setup, Faster Payback: 75% lower upfront cost vs. traditional solar batteries, from 2.5-year payback¹
- Expandable Whole-Home Power: Start 6kWh / 7.2kW → scale to 90kWh / 21.6kW
- Smart Panel Control: 20ms backup + 12 circuits with Smart Home Panel 2
- High Solar + Generator Ready: Up to 16.8kW solar + portable generator support
- EV Charging Optimized: Up to 35 miles/hour with smart TOU charging
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EcoFlow DELTA Pro Ultra
Since 2021, our smart home energy system EcoFlow DELTA Pro Series has delivered reliable home backup to over 100,000 families.
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Over 12,000 Units installed in U.S. households
EcoFlow DELTA Pro Ultra is a whole-home energy system designed to grow with your family. Integrated with the Smart Home Panel 2, it scales to meet your evolving energy needs — keeping your home powered, intelligent, and secure through every stage of life.
Get the Highlights
Power That Grows With Your Home
Expandable Power, Multi-Source Backup
7.2-21.6kW
6-90kwh
7-Day Setup.
Storm-Ready
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Powers 99% of Whole-Home Appliances
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Save Up to $3,600/Year
With a Smarter Energy Ecosystem
Your Smart Home, Under Control
Open Smart Home Ecosystem with 15+ Partner Brands
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Power That Can Grow With Your Home
7.2-21.6kW/ 6-90kwh
One 6kWh battery
Expands all the way up to 90kWh in 15 stackable units.
Whole-Home Backup Resilience, at Any Scale
7.2-21.6kW
Output
6-90kWhCapacity
One 7200W unit runs your 4-ton central a/c
Up to 21.6kW can power your home without any interruptions.
Powers 99% of Whole-Home Appliances
7.2kW output handles energy-hungry loads. Expandable up to 21.6kW, it powers everything all at once from compact homes to larger households—accommodating every stage of your living space, today and beyond.
7.2kW One Unit
21.6kW Max (Three Units)
Multi-Source Charging, Zero Worries
- Generator on cloudy days
- Solar on sunny days
- EV charging when you need it
Compatible with the EcoFlow Smart Generator 4000 and 99% of generators, delivering up to 12kW for reliable backup when sunlight isn't enough.
Harness the sun with up to 5.6-16.8kW solar input from third-party systems. Just one hour of solar can power an entire day
Refuel at up to 7.2kW using the EV X‑Stream Adapter, wherever EV charging is available.
Spring Storms Coming? Be Ready in 7 Days.
Fastest 7‑Day Install, Guaranteed.
Step 1: Place Your Order
Share your delivery details and contact information.
Step 2: Schedule Installation
We’ll reach out within 2 business days to confirm your installation time.
Step 3: Install & Activate
Our certified engineer installs and commissions your system—ready to use the same day.
Step 4: Review & Enjoy
Verify your system and start enjoying reliable whole-home power.
When Life Grows or Moves, Your Power Moves with You
Whether you're expanding your home or relocating across states, simply unplug your system and bring reliable energy with you. No complex setup, no delays—seamless power for every new beginning.
Peace of Mind, Powered by Intelligence
Auto-Recharging / 20ms Auto Switchover / Intelligent Control
- Before the Storm
Get Alerts
- When the Storm Hits
Lights Stay On
- During the Storm
Extended Backup Time
Storm Guard sends a notification and automatically charges DELTA Pro Ultra to 100% capacity when severe weather is forecasted.
Save Up to $3,600/Year with a Self-Evolving Energy Ecosystem
Connect solar, storage, and EV charging through our proprietary full-stack system. It learns your home’s rhythm—getting smarter with every watt to maximize your savings.
Saveup to
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Built to Save, From Every Angle
Generation. Storage. Distribution. Usage — Optimized as One.
- Max Solar
- Smart Storage
- Intelligent Panel
- EcoFlow EV Charger
Harvest every ray. Supports up to 16.8kW input across 3 inverters, compatible with third-party systems or DIY solar setup. The more you install, the more you own.
Read MoreSavings, On Autopilot
Learns your home. Blends all modes. Saves automatically. Delivers energy your way.
- Self-Powered Mode
Live on Sunshine
- Scheduled Tasks
Set It and Forget It
- TOU Mode
Outsmart the Price Spikes
Store solar energy and power your home directly once your battery is full. Reduce grid dependency, lower bills, and gain true energy freedom—especially when energy prices surge.
Designed for Indoor Safety and Reliability
Built for indoors. Defends against extremes, theft, overheating—with robust build, plug & play security, and intelligent X-Cooling & BMS.
EcoFlow X-Cooling
EcoFlow X-Cooling technology ensures sustained high-efficiency operation under heavy loads, extending lifespan and backed by a 5-year warranty.
11 premium sintered heat pipes
6 dedicated fans
Customized aluminum board
Vertical cooling fins
Boost Performance with BMS
Powered by advanced LFP tech and a smart BMS, the battery delivers high performance while prioritizing safety and long-term reliability.
Operating temperatures: -4°F to 113°F
290V high voltage tolerance
IP54 dustproof and splashproof
- Inverter
- Battery
- Built to Endure
Your Smart Home, Under Control
Powered by EcoFlow OASIS
Click here to explore our special plan for expert users.
An Open Smart Home Ecosystem
Seamlessly sync and control your home energy—integrating our power with your devices: from thermostats and EV chargers to major appliances.
Accessories to Maximize Your Ultra
How to Choose
1. Payback Calculation Logic (California Example): Daily solar generation: 5.6kWp system × 6 sun hours/day) × 0.8 = 26.88kWh/day. Electricity rates: Average rate: $0.30/kWh. TOU peak/off-peak price differential: $0.30/kWh. Daily savings: Solar savings: 26.88kWh × 0.30 = $8.064 Battery TOU savings: 6kWh × 0.30 = $1.8 Total daily savings: $8+$1.8 = $9.864 Monthly savings: $9.863/day × 30 days = $295.92/month Annual savings: $9.8/day × 365 days = $3600.36 2. A soft-starter may be needed if the air conditioner's LRA rating is not within 120A 3. Vehicle model and usage dependent 4. The EcoFlow AC Generator Charging Adapter is required to charge DELTA Pro Ultra using a generator 5. We support a comprehensive list of platforms for you to upload utility plans automatically after your consent (released in June)