Description
Generac GP15500EFI Portable Generator – Maximum Power for Demanding Applications
The Generac GP15500EFI Portable Generator is built for serious power needs, delivering industry-leading performance for home backup, job sites, and heavy-duty applications. With an impressive 19,300 starting watts and 15,500 running watts, this generator is capable of powering large homes, multiple appliances, and demanding equipment with ease.
At its core is a robust 816cc engine equipped with Electronic Fuel Injection (EFI), optimizing fuel efficiency, performance, and reliability. This advanced system ensures consistent power output while providing up to 11 hours of runtime at 50% load, making it ideal for extended outages or long workdays.
Designed with both performance and safety in mind, the GP15500EFI features TruePower™ Technology, delivering clean power with less than 5% total harmonic distortion—safe for sensitive electronics, tools, and appliances. The integrated COsense® Technology continuously monitors carbon monoxide levels, automatically shutting down the generator to protect you and your environment.
Convenience features like electric start (battery included), a built-in hour meter with maintenance tracking, and a large 14.2-gallon fuel tank make operation simple and efficient. The rugged steel frame, heavy-duty never-flat wheels, and optional lifting eye ensure durability and portability across any jobsite or property.
When paired with a manual transfer switch, the GP15500EFI becomes a powerful alternative to a standby generator—capable of providing whole-home backup during outages.
Built for power. Engineered for safety. Ready when you need it most.






