Quick Answer
A portable generator costs $500–$2,000 but requires manual starting, fueling, and your presence during an outage. A standby generator ($9,000–$16,000 installed) starts automatically, runs on piped fuel, and needs no action from you. The right choice depends on your budget, how often you lose power, and whether someone always needs to be home to manage it.
Key Takeaways
- 1Portable: $500–$2,000, manual operation, you must be present, limited coverage via extension cords.
- 2Standby: $9,000–$16,000 installed, fully automatic, whole-home coverage potential, no manual action needed.
- 3Portable generators paired with a manual transfer switch or interlock kit are the code-safe way to connect to home circuits.
- 4Never run a portable generator indoors or in a garage — carbon monoxide deaths occur every year from this mistake.
- 5Many households keep a portable as a backup to the standby — the two are not mutually exclusive.
- 6If you expect to upgrade to standby eventually, mention it now so transfer switch prep work anticipates the future system.
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. See our side-by-side comparison for the full breakdown across cost, fuel, and coverage.
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. A portable paired with a manual transfer switch or interlock kit is the code-safe way to power specific circuits without the cost of a full standby system.
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. Whether that cost is justified comes down to your specific outage risk and what's at stake.
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.
What should you do next?
If standby is the right direction, estimate the generator size your home needs before getting quotes.
Generator Size Calculator →