Natural Gas vs Propane
Compare the two most common fuel options for standby generators.
Natural Gas
- Usually supplied continuously by a utility line.
- No on-site fuel tank needed.
- Convenient for long outages if gas service remains available.
- Fuel cost depends on local utility rates.
Propane
- Stored in a tank on the property.
- Works without a natural gas utility connection.
- Fuel supply is limited by tank size.
- May require refilling after extended use.
Side-by-side
| Factor | Natural Gas | Propane |
|---|---|---|
| Fuel availability | Utility line, where service exists | Delivered and stored on site |
| Storage needed | No on-site tank | Tank sized to the home |
| Outage runtime | As long as gas service remains available | Limited by tank size |
| Refueling | Not handled by the homeowner | Refill deliveries as needed |
| Typical convenience | Continuous supply | Independent of utility service |
| Best fit | Homes with existing gas service | Homes without gas service |
Helpful note: Fuel choice may depend on what is available at the property, local codes, installation cost, and expected outage duration.