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.
- Generac #8150 GP5500E
- Pulsar PG6580ECO
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 | Generac #8150 GP5500E | Pulsar PG6580ECO |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | Winner: Winner: 5500 W | 5300 W |
| Starting watts | Winner: Winner: 6875 W | 6580 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 75 dB |
| Weight | 163 lbs | Winner: Winner: 140 lbs |
| Run time @50% load | Winner: Winner: 10.5 h | 10 h |
| Run time @25% load | 13.4 h | Not available |
| Fuel tank | 5.4 gal | 5.3 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 30 x 27 x 25 | 26.6 x 19.7 x 18.7 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240V 60 Hz |
| Voltage (DC) | Not available | 12 |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | Not available |
| Engine | ||
| Engine | Generac OHV 4-stroke | Ducar 274 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil, Electric |
| Warranty | ||
| Warranty | 2 years | 2 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 5500 W | 5300 W |
| Starting watts | 6875 W | 6580 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 | 10.5 h | 10 h |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | true |
| Compliance | CARB, EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | true |
| UPC | 696471104639 | 814726027100 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 5500 | 5300 |
| Starting Watts (Gasoline) | 6875 | 6580 |
| Runtime @ 50% Load (Gasoline) | 10.5 | 10 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R) | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | Ducar OHV 4-stroke |
| Engine Displacement | 298 | 274 |
| Engine Oil Type | 5W-30 | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | 10.5 | 10 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection, CO monitoring |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Mobility Components | Yes | Not available |
| Starting Components | Recoil, Electric | Not available |
| Included Accessories | Oil, Funnel, Tool Kit, Battery, and Wheel Kit | Funnel, tool kit, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 2 | Not available |
| Part Number | 8150 | Not available |
| Additional specs | ||
| Summary | The Generac GP5500E is a 5,500 watt gasoline generator built to power whole house essentials during outages or on job sites. Its 6,875 starting watts handle motor driven appliances like well pumps and air conditioners that demand heavy inrush current. For homeowners and contractors who want reliable backup without crossing into stationary generator territory, the GP5500E delivers meaningful output with the refueling simplicity of gasoline. | The Pulsar PG6580ECO is a 6,580-watt gasoline-powered portable generator equipped with a 274cc, 4-stroke, OHV engine. It features electric start with recoil backup, a 5.3-gallon fuel tank providing up to 10 hours of runtime at 50% load, and includes safety features like a CO shutdown sensor and low oil shutdown. Designed for versatility, it offers multiple outlets for various applications and is mounted on a durable powder-coated steel frame with fold-down handles and never-flat wheels for enhanced mobility. |
- Most PowerfulGenerac #8150 GP5500E5500W running
- QuietestPulsar PG6580ECO75 dB
- Longest RuntimeGenerac #8150 GP5500E10.5h at 50% load
Where to buy
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Generac #8150 GP5500E
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Pulsar PG6580ECO
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