The core tradeoff
A portable generator costs far less upfront but requires you to be present, fuel it manually, and start it by hand — every time. A standby generator costs significantly more and requires professional installation, but starts automatically whether you're home or not.
When portable makes sense
Occasional, short outages and a tighter budget both favor portable units. They're also more flexible if you move, since there's no permanent installation tied to the property.
When standby makes sense
Frequent or extended outages, a household that includes someone dependent on powered medical equipment, or simply wanting to not think about backup power during a storm all point toward standby, despite the higher cost.
A hybrid approach is common, too
Some households keep a portable generator even after installing a standby unit — as a backup to the backup, or for use away from home (camping, job sites). The two aren't mutually exclusive, and many owners view the portable as a low-cost supplement rather than a replacement once the standby system is in place.
Frequently asked questions
Sources
- OSHA — Using Portable Generators Safely (Fact Sheet) — Publishes safety guidance on portable and stationary generator use, including carbon monoxide hazards.
- NFPA 37 — Standard for the Installation and Use of Stationary Combustion Engines and Gas Turbines — Covers clearance, ventilation, and safety requirements for stationary standby generators.