Delta Pro Ultra 6kWh Power Station
All-in-One System Portable
Modular whole-home power. Each Inverter module = 7200 W AC + 5600 W solar; each battery module = 6.1 kWh LFP. Stack up to 21.6 kW AC and 90 kWh of storage.
The Delta Pro Ultra is EcoFlow's full-replacement-for-utility-power product. Three inverter modules in parallel hit 21.6 kW continuous which can run a typical 200A US home. The integrated solar charge controllers do up to 16.8 kW of PV input across a 3-stack. This is the only portable-derived unit shipping that genuinely competes with permanent battery systems.
Normalized price
$895 per kWh
$5,499 listed price
Methodology: lowest in-stock merchant price · normalized to nameplate
Owners considering a Tesla Powerwall but wanting modularity
The data
Specifications
Battery
| Capacity (nominal) | 6.144 kWh |
|---|---|
| Chemistry | LFP |
| Max expandable capacity | 90 kWh |
Output
| Continuous AC output | 7.2 kW |
|---|---|
| Surge output | 14.4 kW |
| UPS switchover | 20 ms |
Charging
| Solar input | 5600 W |
|---|---|
| Solar voltage range | 30–450 V |
| AC input | 7.2 kW |
| Generator input | Yes |
Smart features & certifications
| App / Wi-Fi | Yes |
|---|---|
| App brand | EcoFlow |
| Certifications | UL 9540A, FCC |
Physical
| Weight | 51 kg |
|---|
Warranty
| Warranty | 5 years |
|---|
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Editorial
Best for, watch out for
Best for
- Owners considering a Tesla Powerwall but wanting modularity
- Off-grid primary power
- Anyone with a 3-phase or large 240V split-phase load profile
Watch out for
- Pricing starts at $5–6k for one inverter + one battery and scales linearly
- Permanent install — no longer 'portable'
The market
Price history
Price history
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The shortlist
Three alternatives we'd consider
Common questions
What people ask about the Delta Pro Ultra 6kWh Power Station
What's the difference between Delta Pro Ultra 6kWh Power Station and a residential all-in-one inverter-battery?
EcoFlow Delta Pro Ultra 6kWh Power Station is a solar generator (portable power station) — designed to be picked up and moved, with built-in outlets and a solar input port. It's distinct from a residential AIO like the EcoFlow PowerOcean or Sol-Ark 12K, which is a permanent-install hybrid inverter wired into a home's main panel. Solar generators excel at backup-of-last-resort, off-grid trips, and powering specific high-priority devices. Residential AIOs are what you'd choose to back up the whole home.
What can EcoFlow Delta Pro Ultra 6kWh Power Station actually run, and for how long?
With 7200W continuous AC output, EcoFlow Delta Pro Ultra 6kWh Power Station can run anything that draws under that wattage continuously: refrigerators (~150W), LED lights, laptops, modems, CPAP machines, even small space heaters at low setting. Surge to 14400W means it can handle motor-startup spikes from compressors and small pumps. At 6.144kWh capacity, runtime depends on draw: a 60W draw runs 87 hours, a 600W draw runs 8.7 hours. (The 0.85 factor is realistic round-trip efficiency.)
How do I expand capacity?
EcoFlow Delta Pro Ultra 6kWh Power Station expands to 90kWh total via add-on battery packs from the same manufacturer. The expansion battery connects with a single high-current cable and the BMS treats the combined bank as one battery. Note that the inverter section's continuous AC output (7200W) doesn't increase with capacity — only runtime does.
Will this charge from the panels I already have?
EcoFlow Delta Pro Ultra 6kWh Power Station accepts 30–450V solar input up to 5600W. Most rigid 12V/24V portable panels work directly. Residential roof panels (typically 30–50V Voc) work too, but you'll need to wire panels in series to stay above the lower voltage threshold and below the upper. Confirm panel Voc + cold-temperature derating before connecting.
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