Appliances › Outage Essentials

What size power station runs a garage door opener (1/2 hp)?

Brief, intermittent — but the surge matters if it shares a small unit.

550 Wrunning watts

1,100 Wstartup surge

5%duty cycle

31 Whfor 1.0 h

Need to run it alongside other things? Add it to the full sizing tool with the rest of your load.

What size you need for 1.0 h

You need about 31 Wh — and 40 units fit. The smallest sufficient is the Bluetti EB3A; we never push more capacity than your load can use. Surge to clear: 1,100 W.

The math
Running watts (everything on at once) = 550 W
Surge watts (worst single startup + the rest running) = 1,100 W
Average draw (cyclic loads counted by their duty cycle) = 28 W
Watt-hours = 28 W × 1.0 h ÷ 90% usable reserve = 31 Wh

Bluetti EB3Asmallest that fits

268 Wh 600 W cont · 1,200 W surge ~8.6 h on this load $

Punches above its size — a 600 W inverter in a tiny 268 Wh body for surgey small loads.

LiFePO4 · ~30 min to 80% AC; up to 200 W solar · 10 lb

Check price on the Bluetti EB3A → Full specs

EcoFlow RIVER 3 Plus

286 Wh 600 W cont · 1,200 W surge expandable ~9.2 h on this load $

A featherweight 286 Wh unit with X-Boost to briefly stretch past its 600 W rating for bigger resistive loads.

LiFePO4 · ~1 h AC; up to 220 W solar; expandable to 858 Wh · 10 lb

Check price at Amazon → Full specs

Bluetti AC60step-up

403 Wh 600 W cont · 1,200 W surge expandable ~13 h on this load $$

IP65-rated for wet job sites and storms; under 19 lb, expandable well past its base 403 Wh.

LiFePO4 · 4 ways to recharge (AC/solar/car/lead-acid); expandable to 2,015 Wh with two B80 packs

Check price at Amazon → Full specs

Goal Zero Yeti 700

677 Wh 1,000 W cont · 1,500 W surge ~22 h on this load $$

Goal Zero’s LiFePO4 value unit — a 1,000 W inverter for fridge and essentials.

LiFePO4 · ~2.3 h AC; up to 200 W solar · 21 lb

Check price at Amazon → Full specs

Bluetti EB70S

716 Wh 800 W cont · 1,400 W surge ~23 h on this load $$

A rugged 700 Wh workhorse for camping and outage essentials.

LiFePO4 · ~3.5 h AC; up to 200 W solar · 21 lb

Check price at Amazon → Full specs

Bluetti AC70

768 Wh 1,000 W cont · 2,000 W surge ~25 h on this load $$

A 1,000 W inverter and 768 Wh — handles a fridge and most kitchen bursts.

LiFePO4 · ~45 min to 80% AC; up to 500 W solar · 23 lb

Check price at Amazon → Full specs

🔗 The "Check price" buttons are brand-direct affiliate links. We earn a commission when you buy through one — at no extra cost to you, and it never changes which unit we recommend. Disclosure.

Can a specific unit run a garage door opener (1/2 hp)?

40 of the units we track deliver enough watts to run a garage door opener (1/2 hp). Check a specific one for the runtime and the full verdict:

677 Wh · 1,000 W cont

768 Wh · 1,000 W cont

runs it

Anker SOLIX C800

768 Wh · 1,200 W cont

runs it

Goal Zero Yeti 1000X

983 Wh · 1,500 W cont

runs it

Goal Zero Yeti 1000 Core

983 Wh · 1,200 W cont

runs it

EcoFlow DELTA 2

1,024 Wh · 1,800 W cont

runs it

EcoFlow DELTA 3 Plus

1,024 Wh · 1,800 W cont

runs it

Common questions

What size power station do I need to run a garage door opener (1/2 hp)?

A garage door opener (1/2 hp) draws about 550 W running, with a startup surge near 1,100 W. So you want a unit with at least 550 W continuous output and 1,100 W+ surge. For 1.0 h of runtime that's roughly 31 Wh of capacity — the Bluetti EB3A is the smallest unit that clears all of it.

How many watts does a garage door opener (1/2 hp) use?

About 550 W while running, spiking to roughly 1,100 W on startup. It only draws power about 5% of the time, so over an outage its energy use is well below 550 W × the hours — which is why a modest battery lasts longer than you'd expect.

Sources: Garage Door Opener (1/2 HP) wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); station 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.