20kW Standby Generator

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A perfect fit for any home, the 20kW Fortress standby generator powers all of a home’s electrical needs easily and automatically. Keep your family safe, comfortable and free from the stress that comes with power outages.


20kW Standby Generator

Back-up power for medium to large sized homes

A perfect fit for any home, the 20kW Fortress standby generator powers all of a home’s electrical needs easily and automatically. Keep your family safe, comfortable and free from the stress that comes with power outages.

Chenango Supply of Punta Gorda has been Installing, maintaining & servicing these units for over a decade. They are wonderful additions to any home looking for the convenience of a fully automatic standby generator system. We have access to units from 10 kW to 200 kW along with the transfer switches and control modules. We promote the Symphony II system which allows us to run a large home with multiple high load thermostat or timer-controlled devices with a 20kW generator, transfer switch and the necessary control modules that monitor, prioritize and control those loads. As a trained and certified dealer, we can supply the Fortress Series of these generators with their 10-year warranty and stainless steel and aluminum powder coated cabinets that will hold up in our harsh SW Florida environment.

Symphony® II Power Management

Manages the distribution of power to your selected appliances automatically. Load management ensures the generator won’t overload and shutdown so your family can continue with its daily routine. Transfer switch and modules sold separately. Watch A Short Video On How This Works (Click Here)

Amplify Power Management

Our Amplify Power Management system automatically allows you to power more high voltage appliances in your home for less. Added convenience and flexibility for you to be able to change the power priorities via wifi at any time with the ease of a free app on your smartphone. Transfer switches and modules sold separately.

InfoHub™ Wireless Monitoring

Lets you monitor your generator’s status on your computer, tablet or smartphone sending maintenance reminders so your generator is always ready for the next power outage. Sold separately. 

Commercial Vanguard™ Engine

Our in-house state of the art equipment to enhance part control which makes the Vanguard™ Engine one of the best in the industry. For the dirty demanding environments, this engine is built to last.

Best in Class Warranty

Covers parts, labor and travel for the full-length of the warranty.

Assembled and Engineered in the USA

With domestic and foreign parts.

Corrosion Resistant Durable Enclosure

Made from automotive-grade galvanneal steel to resist rust. Its advanced powder coat paint process results in years of protections against chips and abrasions.

Flexible Placement Options

With the ability to install your generator as close as 18 inches from your home

Low Idle Mode

Scheduled weekly test mode that runs at a low RPM for fewer disturbances and less fuel consumption. (Only on model #s 040587, 040589, 040609)

Superior Customer Support

Our product is backed by our nationwide dealer network and call center experts. Complete our web form below or visit the customer support portal to get your questions answered.

Financing Solution

We have partnered with Synchrony Bank to provide financing solutions that fit your needs. Special financing4 is available on qualified Briggs & Stratton Standby Generators only with the Standby Power Credit Card.


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