Head to head
Goal Zero Yeti Pro 4000 vs EcoFlow DELTA Pro Ultra
Goal Zero · Power Station
Goal Zero Yeti Pro 4000
~$3,399
3,600 W / 7,200 W surge · up to fridge, freezer and the essentials
EcoFlow · Power Station
EcoFlow DELTA Pro Ultra
~$4,999
7,200 W / 10,800 W surge · up to furnace blower, sump pump or a window AC
Quick takeThe Goal Zero Yeti Pro 4000 lists about $1,600 lower; the EcoFlow DELTA Pro Ultra puts out more sustained power (7,200 W).
| Spec | Goal Zero Yeti Pro 4000 | EcoFlow DELTA Pro Ultra |
|---|---|---|
| Approx. price | ~$3,399 | ~$4,999 |
| Type | Power Station | Power Station |
| Fuel | Battery (LiFePO4) | Battery (LiFePO4) |
| Running / output watts | 3,600 W | 7,200 W |
| Starting / surge watts | 7,200 W | 10,800 W |
| Battery capacity | 3,994 Wh | 6,144 Wh |
| Expandable to | 20,000 Wh | 90,000 Wh |
| Noise | — | — |
| Runtime | Fridge (~150W): ~23 hrs on base unit | Fridge (~150W): ~35 hrs on base unit |
| Outlets | 4x 120V 20A AC, 1x 30A TT-30 RV, 3x USB-C (1x 100W), 3x USB-A, 12V | 11 outlets incl. 120/240V 30A L14-30, TT-30, NEMA 5-20s, USB-C, USB-A |
| Fuel tank | — | — |
| Weight | 115.7 lbs | 164 lbs |
| Transfer-switch ready | Yes | Yes |
| Warranty | 5-year | 5-year |
Highlighted cell is the better figure for that row.
Owner pros and cons
Goal Zero Yeti Pro 4000
- +Best-in-class build: aluminum shell, magnetic port covers, UL2743 outdoor rating
- +3,000W solar input - full recharge in under 2 hours of good sun
- +Haven 10 transfer switch enables clean 10-circuit home backup
- +30A RV port plus 405W 12V high-power port for camper builds
- −Priced well above equivalent EcoFlow/Anker capacity
- −No 240V output from a single unit
- −Tank Pro expansion batteries are expensive per kWh
- −App still trails EcoFlow in features and polish
- −115.7 lbs, though it ships with a removable wheeled cart and handle
EcoFlow DELTA Pro Ultra
- +7200W/240V single stack runs nearly any household load including central AC (120A LRA)
- +Scales from 6kWh to 90kWh - buy capacity only as you need it
- +Smart Home Panel 2 gives true automatic whole-panel backup
- +5.6kW solar input per inverter is generator-replacement territory
- +Owners report seamless outage transitions with SHP2 - lights barely flicker
- +No permits or utility interconnection needed unlike installed batteries
- −Ecosystem lock-in: SHP2, cables, and batteries are all pricey proprietary add-ons
- −Fan noise under load is prominent - not a bedroom device
- −164 lbs for inverter + one battery; genuinely two-person
- −Idle/standby consumption meaningfully drains stored energy over multi-day outages
- −At full build-out, cost per kWh exceeds an installed home battery