Watts

Typical figures for this type, from the sources at the foot of this page. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

Running, typical
1,500 W
Running, low to high
1,000 W to 2,000 W
Starting
3,000 W2,000 W to 6,000 W, 2 times running
Typical use a day
2 hhours the motor actually runs
Average draw while on
1,500 W
Voltage
240 V
  • Assumes the motor runs the whole time; real use is often less.

The math

Worked with the typical figure, as the calculator does it.

  1. Output1,500 W running, so the station's continuous output must be at least 1,500 W.
  2. Surge3,000 W to start, so its surge rating must be at least 3,000 W.
  3. Average draw1,500 W: the running watts count for every hour it is on, as if the motor never paused.
  4. A typical day1,500 W × 2 h = 3,000 Wh a day.
  5. Typical 2 h a day1,500 W × 2 h = 3,000 Wh usable, ÷ 0.85 = 3,529 Wh of rated capacity.
  6. 8 hours of running1,500 W × 8 h = 12,000 Wh usable, ÷ 0.85 = 14,118 Wh of rated capacity.
  7. On the EcoFlow DELTA 3 Classic1,024 Wh × 0.85 = 870 Wh usable, ÷ 1,500 W = 35 min.

Stations that run it

Every power station in the data with this appliance alone plugged in, at 85% efficiency. Type the running watts from your own label and the table works it out again.

Add it to the runtime calculator with the rest of your list

What moves the number

A 1 HP submersible pump runs on 230 V only, so it needs a station that supplies 240 V. It runs at 1,000 W to 2,000 W, and the start reaches about 3,000 W, up to 6,000 W. Its motor maker sets a minimum generator of 4 to 6 kW, depending on the wiring.

Questions

How many watts does a well pump (1 HP) use?
About 1,500 W while running, from 1,000 W to 2,000 W across the models in our sources. It needs about 3,000 W for a moment at start. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.
Can a portable power station run a well pump (1 HP)?
Yes. 23 of the 54 power stations in the Enough Watts data set can power it on its own. It takes at least 1,500 W of continuous output and a surge rating of 3,000 W, plus a 240 V outlet.
How long will a power station run a well pump (1 HP)?
It depends on the battery. At 85% efficiency the smallest station that powers it, the EcoFlow DELTA 3 Classic (1,024 Wh), gives about 35 min. The largest, the EcoFlow DELTA Pro Ultra X (12,288 Wh), gives about 7.0 h.
Why does a well pump (1 HP) need a high surge rating?
Its motor draws about 3,000 W for a moment at start, 2 times its 1,500 W running figure. A station whose surge rating is below that cannot start it, even when the continuous output is enough. 38 of the 54 stations pass that check.

Sources

Researched from these pages, then checked against them a second time. The check corrected at least one figure.

  1. Generator Wattage Chart: Common Appliances & Tools - Champion Power Equipment generator maker guide, checked
  2. Franklin Electric Submersible Motors Application, Installation and Maintenance (AIM) Manual, 60 Hz (M1311) maker manual, checked

We read published figures and do the math; we do not measure appliances. The methodology states every formula on this page. Capacities are rated watt hours: 1,000 Wh rated gives 850 Wh usable at the default.