RIVER 3 Plus › runs › Sump Pump (1/3 HP)

Can an EcoFlow RIVER 3 Plus run a sump pump (1/3 hp)?

Q: Can the EcoFlow RIVER 3 Plus run a sump pump (1/3 hp)?

No. A sump pump (1/3 hp) needs 800 W continuous and a 1,500 W startup surge, but the EcoFlow RIVER 3 Plus only delivers 600 W continuous and a 1,200 W surge — so it can’t sustain the running load. You'd want a larger unit.

No — the EcoFlow RIVER 3 Plus can't run a sump pump (1/3 hp).
The sump pump (1/3 hp) draws about 800 W running, with a 1,500 W startup surge; the RIVER 3 Plus delivers 600 W continuous and 1,200 W surge. That's not enough continuous output.

800 WSump Pump (1/3 HP) running

600 WRIVER 3 Plus continuous

—runtime

286 WhRIVER 3 Plus capacity

The check
Continuous: 600 W < 800 W needed → fails
Surge: 1,200 W < 1,500 W needed → fails

Units that do run a sump pump (1/3 hp)

Goal Zero Yeti 700

677 Wh · 1,000 W cont

768 Wh · 1,000 W cont

~4.3 h

Anker SOLIX C800

768 Wh · 1,200 W cont

~4.3 h

Goal Zero Yeti 1000X

983 Wh · 1,500 W cont

~5.5 h

Goal Zero Yeti 1000 Core

983 Wh · 1,200 W cont

~5.5 h

EcoFlow DELTA 2

1,024 Wh · 1,800 W cont

~5.8 h

EcoFlow DELTA 3 Plus

1,024 Wh · 1,800 W cont

~5.8 h

Bluetti Elite 100 V2

1,024 Wh · 1,800 W cont

~5.8 h

Common questions

Can the EcoFlow RIVER 3 Plus run a sump pump (1/3 hp)?

No. A sump pump (1/3 hp) needs 800 W continuous and a 1,500 W startup surge, but the EcoFlow RIVER 3 Plus only delivers 600 W continuous and a 1,200 W surge — so it can’t sustain the running load. You'd want a larger unit.

Sources: Sump Pump (1/3 HP) wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); RIVER 3 Plus specs — manufacturer published specifications (compiled 2026-08-10; approximate). Informational only — a computed sizing estimate from published appliance-wattage charts and manufacturer station specs. It is not an electrical guarantee. For hardwired or whole-home backup, transfer switches, or any permanent install, consult a licensed electrician.