How Many Watts Does a Sump Pump Use?
Verified July 2026 Manufacturer + DOE typical ratings. Methodology
Sump Pump wattage by type
| Pump size | Running watts | Starting surge |
|---|---|---|
| 1/4 HP | 600W | 1,500W |
| 1/3 HP | 800W | 2,000W |
| 1/2 HP | 1,050W | 2,600W |
| 3/4 HP | 1,400W | 3,200W |
Sump pumps fail exactly when storms knock the power out, which is why they're the #2 reason homeowners buy battery backup. In storm conditions expect a 20% duty cycle - the pump cycles roughly 12 minutes per hour with steady inflow. Heavy flooding can push duty toward 100%, which quintuples energy use: plan capacity for your worst realistic storm, not the average one. A 120V pump works with any power station that clears its surge; check our sump pump roundup for units ranked on exactly this math.
How long real power stations run a sump pump
Computed from each unit's rated capacity at 85% inverter efficiency and a 20% duty cycle (800W running, 2,000W start). Units that can't clear the start surge are excluded.
| Power station | Capacity | Estimated runtime | Price | |
|---|---|---|---|---|
| EcoFlow Delta Pro Ultra Longest | 6,144 Wh | 32.6 hours | $3,999 | Check price → |
| Pecron F5000LFP | 5,120 Wh | 27.2 hours | $2,199 | Details → |
| EcoFlow Delta Pro 3 | 4,096 Wh | 21.8 hours | $2,399 | Check price → |
| Anker SOLIX F3800 Plus | 3,840 Wh | 20.4 hours | $2,299 | Details → |
| OUPES Mega 3 | 3,072 Wh | 16.3 hours | $1,149 | Details → |
| Bluetti Elite 300 | 3,014 Wh | 16.0 hours | $1,199 | Check price → |
| Dabbsson DBS2300 | 2,330 Wh | 12.4 hours | $899 | Details → |
| Bluetti Elite 200 v2 | 2,073 Wh | 11.0 hours | $899 | Check price → |
| Bluetti AC200L | 2,048 Wh | 10.9 hours | $899 | Check price → |
| Jackery Explorer 2000 v2 | 2,042 Wh | 10.8 hours | $799 | Check price → |
| VTOMAN FlashSpeed 1500 | 1,548 Wh | 8.2 hours | $500 | Check price → |
| Jackery Explorer 1000 v2 | 1,070 Wh | 5.7 hours | $469 | Check price → |
| Anker SOLIX C1000 | 1,056 Wh | 5.6 hours | $430 | Check price → |
| EcoFlow Delta 3 Plus | 1,024 Wh | 5.4 hours | $689 | Check price → |
| OUPES Mega 1 | 1,024 Wh | 5.4 hours | $469 | Check price → |
| Bluetti AC70 | 768 Wh | 4.1 hours | $359 | Check price → |
⚡ Backing up more than a sump pump?
Add your other appliances and outage length — our calculator sizes the whole load and shows exactly which units fit.
Size my full backup →Frequently asked questions
How long will a 2kWh power station run a sump pump?
At 20% storm duty a 1/3 HP pump uses ~190Wh/hour, so a 2,042Wh Jackery 2000 v2 runs it about 10.5 hours. At continuous 100% duty, about 2 hours.
Will a power station start my sump pump?
If its surge rating clears the pump's start draw: a 1/3 HP pump needs 2,000W+ surge (most 1kWh-class units qualify); a 1/2 HP needs 2,600W+ (the 2kWh class and up).
Battery backup sump pump vs power station - which is better?
A dedicated 12V backup pump is cheaper but single-purpose. A power station costs more, backs up the pump plus fridge/Wi-Fi/phones, and serves every other outage of the year.
Keep reading
- Full comparison database — every spec, side by side
- Best-for guides — ranked picks by use case
- 2026 state incentives — what still pays after the federal credit