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Standby vs Portable Generator

A standby generator is a permanently wired system that switches on automatically the moment power fails. A portable generator is the lower-cost option you wheel out and hook up yourself. The decision comes down to how often power goes out, what you're willing to spend, and whether someone's home to run a portable unit when it happens.

	Standby Generator	Portable Generator
Price	$5,000-$15,000+ installed, transfer switch included	$400-$2,500 for the unit alone
Power output	10,000-50,000+ watts -- enough to run an entire house	2,000-10,000 watts, enough to cover the essentials
Installation	Needs a licensed electrician, a transfer switch, and a permit	No installation -- just plug in with extension cords or an inlet
Fuel source	Runs on natural gas or propane tied to a supply line	Gasoline, propane, or dual-fuel, with refueling needed every 8-12 hours
Startup	Kicks on automatically within seconds, even if nobody's home	Manual start -- someone has to be there to set it up
Maintenance	Yearly professional service plus built-in self-test cycles	Oil changes, carburetor care, and off-season prep
Noise	Quieter, often tucked inside a sound-dampened cabinet	Louder, particularly on non-inverter models
Best for	Frequent or extended outages, and homeowners who travel	Occasional outages, renters, and budget-minded buyers

Choose Standby GeneratorChoose standby if outages hit often or run for days, you want the whole house covered, and you don't want to manage backup power in the moment.Shop Generators

Choose Portable GeneratorChoose portable if outages are rare, budget is tighter, or you need power that also works on a job site or campsite.Shop Generators

The verdict

Standby generators cost far more upfront but deliver automatic, whole-house power the moment an outage hits -- worth it where outages are routine. Portable generators are the practical call for occasional outages or anyone who needs power that travels beyond the house.

FAQs

Can a portable generator power a whole house?

Only a large portable (7,000+ watts) hooked to a manual transfer switch covers most essential circuits. Even then, few portables match a standby unit's ability to run central AC, a well pump, and everything else at once.

Do standby generators run on natural gas or propane?

Most run on either, wired straight into the home's gas line or a dedicated propane tank -- no manual refueling, even during a long outage.

How long can a portable generator run continuously?

Usually 8-12 hours on a full tank of gas. A multi-day outage means waking up to refuel -- a standby unit stays tied to a steady fuel supply.

Steelhaul Co. carries both — compare specs and get freight quoted to your ZIP at checkout.