Generac
Generac GP9500E TF Tri-Fuel Portable Generator (12,500 Starting Watts)
$1,169.00
Reference price as of 2026-08-23 — check Amazon for the current price and stock.
Best for homeowners who want Generac's tri-fuel flexibility, including a natural gas hookup, plus easy electric start for reliable whole-home backup power.
Full spec sheet
| Key specs | |
| Brand | Generac |
| Price | $1,169.00 |
| Capacity | — |
| Continuous output | 9500 W |
| Peak / surge output | 12500 W |
| Weight | 219 lb |
| Battery chemistry | — |
| Dimensions (L x W x H) | 27.5 x 27.1 x 27.6 |
| Includes solar panel | No |
| Use cases | Home, Off-Grid |
| Other verified specs | |
| Fuel type | Tri-fuel — gasoline, propane, or natural gas |
| Engine | 500cc Generac OHV, 3600 RPM |
| Noise level | Not published by manufacturer |
| Fuel tank capacity | 7.5 gal (gasoline) |
| Runtime at 25% load | 14 hrs (gasoline) / 6 hrs (20-lb LP tank) |
| Runtime at 50% load | 9.5 hrs (gasoline) / 4.5 hrs (20-lb LP tank) |
| Starting method | Electric start with included 12V lead-acid battery |
| Warranty | 3-year residential limited |
| Price source | Home Depot retail listing (Generac does not list consumer pricing on generac.com) |
Pros
- True tri-fuel — gasoline, propane, or natural gas — for maximum fuel flexibility during extended outages
- Electric start (rocker switch) with battery included, no cord-pulling required
- COsense automatic carbon-monoxide shutdown
- Solid 9.5-hour runtime on gasoline at 50% load
Cons
- Running watts drop notably on alternate fuels: 8,550W on propane, 7,000W on natural gas, versus 9,500W on gasoline
- Heavy at 219 lb
- Generac does not publish an official dBA noise rating for this model
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