Can a portable power station run a well pump?

Only a big one, and only for a small pump. All but one of Franklin Electric's 4-inch single-phase motors in our table run on 230 V, and only 2 of the 9 stations in our table, the EcoFlow DELTA Pro 3 and Anker SOLIX F3800 Plus, have 240 V output. Starting is the harder part: Franklin Electric lists 32.2 locked-rotor amps for its 1/2 HP, 230 V two-wire motor, about 7,400 VA for the moment it starts. Those two stations list 8,000 W and 9,000 W of surge. A 3/4 HP two-wire motor, at about 9,400 VA, is beyond both on paper.

How many watts does a well pump use?

Franklin Electric's 4-inch motors use 670 W at full load for 1/2 HP, 940 W for 3/4 HP, 1,210 W for 1 HP and 1,710 W for 1.5 HP, rising to 960, 1,310, 1,600 and 2,280 W at maximum service-factor load. The pump only runs while water is drawn: 164 gallons a day, EPA's 82 gallons per person for two people, at 10 gallons a minute is about 16 minutes of pumping, or about 180 Wh a day for a 1/2 HP motor.

How many watts does it take to start a well pump?

For a moment, locked-rotor amps times volts. On Franklin's tables that is about 7,400 VA for a 1/2 HP two-wire motor at either 115 V or 230 V, 5,300 VA for a 1/2 HP three-wire motor, 9,400 VA for a 3/4 HP two-wire and 11,200 VA for a 1 HP two-wire. For engine generators Franklin lists a minimum of 3 kW for a 1/2 HP two-wire motor and 2 kW for a three-wire one.

Can a power station run a well pump?

Running it is rarely the problem; starting it is. A submersible pump motor pulls several times its running current for a moment every time it starts, and most of these motors run on 230 V, which most portable stations can't supply. Pick your motor from Franklin Electric's tables to check both.

Last updatedOct 18, 2026

Motor dataFranklin Electric AIM Manual, 2026 edition, read Oct 18, 2026

Your pump and station

Your pump motor

Motor

Motor volts (V)115 or 230, on the motor or control box label

Full-load watts (in watts)Used for energy

Maximum load watts (in watts)At the motor's service factor, used for the output check

Locked-rotor amps (A)Drawn for a moment at every start

Water use

People in the home example (count)

Gallons per person a dayEPA: 82 gallons a day at home on average. Less if you ration in an outage

Pump flow, gallons a minute exampleTime how long the pump takes to fill a 5-gallon bucket at a tap, or see the pump's curve

Days to cover example (days)

Station

Power station example

Rated capacity (in watt-hours)From the maker's spec page

AC output, continuous (in watts)

AC surge (start-up) (in watts)Leave blank if the maker doesn't list it

240 V output

Inverter and conversion efficiency (percent)Jackery's published runtime factor is 0.85

Share of capacity you can use example (percent)Depth of discharge

Station's own idle draw example (in watts)The inverter stays on all day waiting for the pump. Few makers publish it

Result

0days

A submersible pump is wired in on its own circuit (Franklin lists a breaker size for each motor), so a station feeds it through a transfer switch or inlet installed by an electrician. Franklin's manual requires a transfer switch any time a generator backs up a pump on house wiring; treat a station the same way. If your pump runs on a variable-speed or constant-pressure drive, the locked-rotor figure here doesn't apply; ask the drive's maker for its input rating.

Every station against this pump

Days at your water use, from full. Gray rows can't start or run this motor on paper, or lack 240 V output for a 230 V motor. The shaded row is the smallest station in our table that starts it and covers your days. Prices are what each maker's US store showed on Oct 18, 2026.

Links marked “affiliate link” go through Awin to that maker’s US store (Jackery or BLUETTI); if you buy, the maker may pay us a commission at no cost to you. It never changes the hours, the checks or which row is shaded. Affiliate disclosure.

Every station in our table against this load
Station	Capacity, Wh	Runs it for	AC output, W	Surge, W	Store price	Verdict

Franklin Electric 4-inch motors

Single-phase, 3450 rpm, from the AIM Manual's motor tables (2026 edition)
Motor	Volts	Full load, W	Max load, W	Locked-rotor amps	Start-up, VA	Franklin's minimum generator, kW

Start-up VA = locked-rotor amps × volts. Two-wire motors need no control box; three-wire motors use an above-ground control box, and in Franklin's tables they draw less current to start. Franklin's generator minimums are for engine generators, which tolerate a voltage dip at start-up, and are listed here for comparison only; they are not inverter ratings.

How the days are worked out

Pumping time a day = people × gallons per person ÷ gallons a minute. Energy a day = full-load watts × pumping hours + the station's idle draw × 24 hours. Days = capacity × share you can use × efficiency ÷ energy a day. The output check uses the motor's maximum service-factor watts, the most it is rated to draw. The start-up check compares locked-rotor amps × volts with the station's surge rating. That counts volt-amps against watts, which errs toward caution, and a station's surge rating is a short peak whose length makers rarely state. Pressure tanks cut how often the pump starts but not the current at each start. Sources are on Methods and sources.

Sump pump backup
A plug-in pump, and whether a station can start it.
Station specs
Output, surge and price for 9 stations side by side.
Size a station
Add the fridge, lights and phones to your outage day.