From emergency home backup to DIY projects to the jobsite, the Generac GP15500EFI portable generator provides high wattage, dependable portable power. Equipped with an 816cc engine with Electronic Fuel Injection, the GP15500EFI delivers power efficiently, providing up to 11 hours of runtime at 50% load. TruePower™ Technology safely powers sensitive electronics, appliances and tools while onboard COsense® Technology provides powerful protection against hazardous carbon monoxide. The GP15500EFI also features electric start (battery included), low-oil shutdown protection, circuit breaker protected outlets and an hour meter with maintenance resets. The included never-flat wheel kit and available lifting eye accessory make transportation easy around the home or jobsite.

COsense Technoology – Stops. Alerts. Saves. Powerful protection against hazardous carbon monoxide
Generac 816cc EFI Engine – Delivers the right amount of power to get the best performance and efficiency out of your engine
TruePower Technology – With less than 5% THD, safely powers sensitive electronics and tools
Low-Oil Pressure Shutdown – Automatically safeguards engine from damage
Large Capacity Fuel Tank – With incorporated fuel gauge, provides durability and extended run times
Homelink Manual Transfer Switch Compatible – When paired with a manual transfer switch, the GP15500EFI is powerful enough to provide whole home backup and is a great alternative to a Home Standby Generator.
Hardened 1 ¼” Steel Tube Cradle – For added strength and durability
Hour Meter – Tracks maintenance intervals
Heavy-Duty, Never-Flat Wheels – For reliable portability
Electric Start – Battery Included – Provides hassle-free start-up


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15500 watts

Fuel Type


Power Source


Item Weight

450 pounds


120 Volts (AC)

Output Wattage

Special Feature

Included Components



Transfer Switch Compatible

Product Dimensions

58.5"L x 30.9"W x 36.5"H

Model Name


Ignition System Type

Tank Volume

Engine Displacement



Starting Wattage

Running Wattage



Item model number


Is Discontinued By Manufacturer


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