Compare Generators Side-by-Side
Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- Ryobi RY909500
- Cat RP12000 E
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
| Specification | Ryobi RY909500 | Cat RP12000 E |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | Yes |
| Running watts | 8000 W | Winner: Winner: 12000 W |
| Starting watts | 9500 W | Winner: Winner: 15000 W |
| Noise (lower limit) | Winner: Winner: 85 dB | 0 dB |
| Weight | Winner: Winner: 198 lbs | 350 lbs |
| Run time @50% load | 7.5 h | Winner: Winner: 11.7 h |
| Run time @25% load | Not available | Not available |
| Fuel tank | 6 gal | 13.2 gal |
| Fuel gauge | No | Yes |
| Approx. dimensions (L × W × H) | 31 x 29 x 24 | 35.7 x 32.7 x 35.8 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | 12 |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <20% % | 5 % |
| Engine | ||
| Engine | 500 cc OHV 4-stroke | 670 cc Rato OHV V-Twin |
| Alternator | Not available | Not available |
| Starting system | Recoil | Electric |
| Warranty | ||
| Warranty | 3 years | 2 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 8000 W | 12000 W |
| Starting watts | 9500 W | 15000 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | 7.5 h | 11.7 h |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | false |
| Compliance | EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Bonded to frame | true |
| UPC | 46396058553 | 815683023891 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 8000 | 12000 |
| Starting Watts (Gasoline) | 9500 | 15000 |
| Runtime @ 50% Load (Gasoline) | 7.5 | 11.7 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R) | 2x Duplex 120V 20A (5-20R) GFCI; 2x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | 500 cc OHV 4-stroke | 670 cc Rato OHV V-Twin |
| Engine Displacement | 500 | 670 |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | 7.5 | 11.7 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | No |
| Included equipment | ||
| Starting Components | Not available | Battery, Battery Charger, Wheel Kit |
| Included Accessories | Oil and wheel kit | Oil, funnel, tool kit, battery charger, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Part Number | Not available | 502-3700 |
| Additional specs | ||
| Summary | The Ryobi RY909500 is a 9500W Portable Gas Generator featuring a 500cc OHV engine, delivering 8000 running watts and 9500 starting watts. It offers a 7.5-hour runtime at 50% load, making it ideal for storm backup and jobsite use. | The Cat RP12000 E is a 12,000-watt gasoline generator built for job sites, construction crews, and homeowners who need sustained power for multiple heavy tools or appliances simultaneously. The 15,000-watt peak output handles startup surges from air compressors, circular saws, and welders without stalling. At 350 pounds, this is a stationary or semi-portable unit. It ships with a wheel kit, battery charger, and full tool set, meaning users can operate it immediately without additional purchases. |
- Most PowerfulCat RP12000 E12000W running
- QuietestRyobi RY90950085 dB
- Longest RuntimeCat RP12000 E11.7h at 50% load
Where to buy
Prices can change. We update these automatically.
Ryobi RY909500
Store links
No links yet.
Cat RP12000 E
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.