Cart Icon(0)
Holly Generators Logo
A Generac portable generator with an orange top and black frame, displaying "15,500 watts portable generator" on a side panel. It has multiple outlets and large wheels for mobility.
A portable generator with an orange fuel tank, black frame, wheels, and visible engine components marked "Generac" and "G-Force EFI 816cc" seen from the front.
A Generac portable generator with labels highlighting its electric fuel injection, transfer switch compatibility, True Power technology for safely powering electronics, and COsense technology for carbon monoxide protection.

Need Help Choosing?

Request a complimentary generator consult and let us match you with the right model for your needs.

Generac Portable Generator, 15500 | EFI | Electric Start with COsense | 49ST

SKU: G0077050
Model: 7705

$3,999.00

19300w peak / 15500w running watt portable power gas generator

Best used for home backup, jobsite, camping, events

Generac COSense Technology, 3-year warranty, wheel kit included

Pickup and Delivery Available

Professional Installation, Right at Home.

Let a trusted local expert handle everything for you.

What to Expect

Reliable power starts here.

Whether you're preparing your home or protecting your business, our expert-recommended generators offer trusted backup when you need it most.

Expert help from start to finish.

Holly Companies provides full-service support—from helping you choose the right generator to professional installation, maintenance, and emergency service.

Shop with confidence.

Explore our curated selection of top-rated generator brands, compare specs, and get peace of mind with strong warranties and local support.

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.

Additional information

Weight 420 lbs
Dimensions 39.5 × 30.9 × 36.5 in
Fuel Type

Gasoline
Wattage

19.3 kW (starting) / 15.5 kW (running)
Voltage

120/240 VAC
Transfer Switch Included

No
Monitoring Capabilities

N/A
Certifications

EPA Approved
Country of Origin

Engineered and assembled in the USA (with domestic and foreign parts)
Brand

Generac

Featuring COsense® Technology
STOPS. ALERTS. SAVES. Powerful protection against hazardous carbon monoxide—designed to detect and alert you to dangerous levels, helping to prevent injury or death.

Generac 816cc EFI Engine
Delivers the right amount of power to get the best performance and efficiency out of your engine.

TruePower™ Technology
Produces clean power with less than 5% Total Harmonic Distortion (THD), making it safe for sensitive electronics and tools.

Low-Oil Pressure Shutdown
Automatically shuts down the engine to protect it from damage due to low oil levels.

Large Capacity Fuel Tank
Built-in fuel gauge and a high-capacity design ensure extended run times and long-lasting durability.

Homelink™ Manual Transfer Switch Compatible
Pairs with a manual transfer switch to provide whole-home backup power—an excellent alternative to a Home Standby Generator.

Hardened 1 ¼” Steel Tube Cradle
Rugged steel frame construction for added strength and durability in tough environments.

Hour Meter
Monitors and tracks engine run time for timely maintenance and service intervals.

Heavy-Duty, Never-Flat Wheels
Designed for reliable mobility and portability, even across rough terrain.

Electric Start – Battery Included
Provides quick, hassle-free engine starting with the push of a button.

Reviews

There are no reviews yet.

Be the first to review “Generac Portable Generator, 15500 | EFI | Electric Start with COsense | 49ST”

Your email address will not be published. Required fields are marked *

More to Explore