Portable Generators

Portable generator vs. home standby generator, which backup power option is right for you?

Portable generators are a popular, budget-friendly backup power option, especially for renters, young homeowners, or anyone who wants emergency power without the cost of a permanently installed system. But they’re not a perfect substitute for a home standby generator. This page explains the real-world pros and cons of portable generators, how they compare to Generac home standby systems, safety considerations, typical costs, and the situations where a portable unit makes sense.

Quick summary

• Pros: Low upfront cost, portable, no permits, works when there’s no gas service, good for short term or light duty backup.
• Cons: Manual setup, noisy, fuel logistics (gas cans), limited power, safety risks (CO, back feed), requires physical effort and time during an outage.
• Best for: Budget conscious users, temporary job sites, camping, small power needs, or homeowners willing to do the manual work.
• Not best for: Whole house backup, hands free automatic operation, households with medical equipment, or customers who need reliable, maintenance free protection.

What is a portable generator?

A portable generator is a wheeled or small frame, engine driven, unit that produces temporary electricity. Portables typically run on gasoline (some on propane, dual fuel or tri fuel) and require you to manually start them, manually fuel them, and manually connect appliances via extension cords or a manual transfer switch.

Typical portable sizes range from 2kW to 12kW. In practice, household use is usually limited to powering a few essentials; fridge, lights, a few outlets, maybe a sump pump.

Portable vs. Home Standby Generator (Head-to-Head)

Feature	Portable Generator	Home Standby Generator (Generac)
Upfront cost	Low (few hundred to a few thousand dollars)	High (installed: $17k–$60k+)
Installation	No permits (usually)	Permitted, professional install required
Fueling	Manual gasoline cans/propane tanks	Connected to natural gas or propane tank (automatic)
Operation	Manual start and hookup	Automatic start & transfer (hands-free)
Power capacity	Limited (partial backup)	Whole house or large partial backup
Noise	Louder	Quieter (designed for residential)
Safety	Higher CO & back feed risk if used incorrectly	Designed for safe automatic operation with ATS
Maintenance	Basic engine maintenance	Professional maintenance programs available
Best use case	Short term, portable power	Long term, reliable whole house backup power

Pros of Portable Generators

• Lower upfront cost. A portable unit can be purchased for a few hundred to a few thousand dollars, far less than a standby system.
• Portable & flexible. Move it to where you need power (jobsite, campsite, garage).
• Quick purchase & use. No site visit, permits, or long lead time required.
• Good for limited loads. Power a fridge, lights, or a small window AC unit temporarily.
• Useful for non-residential tasks. Power tools on job sites, charge batteries, or run outdoor equipment.

Cons of Portable Generators

• Manual labor & time. You must move, fill, start, and connect the unit during an outage, not ideal in bad weather.
• Fuel logistics. Gasoline must be stored safely (and legally); during long outages you’ll need to refill cans and possibly travel to get fuel.
• Limited power. Portables rarely deliver whole house power. Heavy loads (electric heat, central AC, ovens) will overload them.
• Safety risks. Portable generators cause carbon monoxide (CO) deaths each year when used improperly. Back feeding your home without a transfer switch can electrocute utility workers.
• Noise & neighbors. Portables are louder than standby units and can be disruptive.
• Less convenience & reliability. Manual operation means you may not power critical loads immediately during an outage.

Real-world scenarios where a portable makes sense

• You rent or plan to move within a short time and don’t want a permanent installation.
• You have a small primary need (refrigerator + lights) and are comfortable with manual fuel and setup.
• You need power for work or outdoor projects (construction, tailgates, camping).
• You’re on a tight budget and willing to accept limitations.

When a home standby generator is the better choice

• You need automatic, hands free power for medical equipment or whole house systems.
• You want reliable coverage during long regional outages and storms.
• You prefer no outdoor heavy lifting or running to gas stations at night.
• You want a solution with remote monitoring, warranty service, and scheduled maintenance.

TriStar Electric installs Generac home standby generators that automatically start, switch loads with an Automatic Transfer Switch (ATS), and are connected to natural gas or a propane tank, ideal for families, businesses, and medically dependent households.

Safety: what every portable generator owner must know

• NEVER run a portable generator indoors or in an attached garage. CO can build up and kill. Keep units outdoors and far from windows/doors.
• Use heavy duty extension cords rated for generator power. Run cords directly to appliances, don’t plug the generator into a house outlet.
• Install a transfer switch if you plan to connect a portable to home circuits, this prevents dangerous back feed.
• Store fuel safely in approved containers and rotate it regularly.
• Follow maintenance: oil changes, spark plugs, and fuel stabilization for seasonal storage.

Cost comparison (ballpark)

• Small portable generator: $400–$1,200
• High capacity portable (8–12kW): $1,000–$3,000
• Portable accessories (cords, manual transfer switch): $100–$1,000
• Portable Generator Infrastructure Installation (to connect your portable generator to the house) $1,000 – $4,000
• Generac home standby installation (TriStar Electric): $17,000 to $60,000+ (depends on size, fuel, site work) see our Generator Installation Cost page for details.

Tips if you choose a portable generator

1. Buy a unit with slightly more rated wattage than you need.
2. Use a professionally installed transfer switch for home circuit hookup.
3. Keep gasoline on hand safely and rotate fuel (stabilizer).
4. Practice setup before a storm so you know how to connect safely.
5. Consider a dual fuel portable (gas + propane) or a tri fuel portable (gas + propane + natural gas) for flexibility
6. Make sure you turn your generator off by shutting off the fuel supply line so that the fuel line gets emptied. This will ensure that bad gas doesn’t get into the fuel system, and will just keep it in the tank where you can treat it with additives.

Final recommendation

Portable generators are a practical, low cost entry to backup power, but they require effort, fuel management, and strict safety practices. For most homeowners who want reliable, automatic protection, especially families with critical loads, a professionally installed Generac home standby generator from TriStar Electric is the better long term solution.