Generac GP8000E
#10 in Mid-sizeFull review
A gasoline generator for backing up most of a home’s essentials through a 30 A transfer switch at a low price. Buyers who want propane should look at a dual-fuel model.
Amazon $1,049$1,049
The Generac GP8000E rates 3.9 among mid-size portable generators; the Honda EB10000 rates 3.0 among large ones. The Generac GP8000E costs $4,950 less ($1,049 vs $5,999).
Honda EB10000
#25 in LargeFull review
A commercial generator for contractors and rental fleets who run it every day and need it to last. For home backup, consumer tri-fuel models deliver the same power for a fraction of the price.
Amazon $5,999$5,999
Prices were last checked October 28, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different size classes (mid-size and large), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Generac GP8000E | Honda EB10000 |
|---|---|---|
| Overall rating | 3.9/5 | 3.0/5 |
| Value 30% | 80 $0.13 per running watt | 0 $0.67 per running watt |
| Run time 15% | 60 10 hours on a tank at 50% load | 39 7.9 hours on a tank at 50% load |
| Fuel options 15% | 0 gasoline only | 0 gasoline only |
| Home hookup 15% | 100 240 V outlet for a transfer switch | 100 240 V outlet for a transfer switch |
| CO safety 10% | 100 shuts off when carbon monoxide builds up | 100 shuts off when carbon monoxide builds up |
| Warranty 10% | 67 3-year warranty | 67 3-year warranty |
| Starting 5% | 80 push-button electric start | 80 push-button electric start |
Specifications
| Generac GP8000E | Honda EB10000 | |
|---|---|---|
| Output | ||
| Gasoline | 8,000 W running, 10,000 W starting | 9,000 W running, 10,000 W starting |
| Outlets | 4 × 120 V, L14-30 | 4 × 120 V, L5-30, L14-30, L14-50 |
| Transfer switch ready | Yes, 240 V | Yes, 240 V |
| Full power at 120 V | No | - |
| Price per watt | $0.13 | $0.67 |
| Fuel and run time | ||
| Fuel | Gasoline | Gasoline |
| Tank | 7.9 gal | 8.2 gal |
| Run time (gasoline) | 10 hr at 50% load | 7.9 hr at 50% load |
| Engine | 420 cc | 688 cc |
| Noise and safety | ||
| Rated noise | - | 71 dBA |
| CO shutoff | Yes | Yes |
| CARB compliant | No | No |
| Build | ||
| Starting | Electric and recoil | Electric and recoil |
| Wheels | Yes | Yes |
| Dimensions | 27.2 x 27 x 26.5 in | 41 x 27.7 x 35.1 in |
| Weight | 198 lb | 403 lb |
| Warranty | 3 years | 3 years |
| Released | 2023-12 | 2012-01 |