Back-up power larger homes or small businesses


The perfect fit for an extra large or luxury homes as well as small businesses power needs. The 48 kW1 is a commercial-grade generator that will offer reliable protection to you home.  (Does not include transfer switch)



Symphony II®

Thanks to Symphony® II Power Management System, a smaller home generator system by Briggs & Stratton can meet all your needs and save you money in the process.

6 Year Parts, Labor & Travel Limited Warranty

The longest warranty in the industry. Our most comprehensive 6 year parts, labor & travel limited warranty.

GM Vortec Engine Power

The commercial-grade GM Vortec 1800 RPM engine packs a punch when called upon, yet it's more fuel-efficient and runs quieter than higher RPM engines.


Durable, all-metal enclosures are built to last protecting against extreme weather conditions and supported by the longest enclosure warranty in the industry.

Trust the Power Experts

When your family chooses Briggs & Stratton, it's choosing the engine experts of more than 105 years.

Superior Customer Support

Shopping for the right standby generator for your home can be confusing, but we will be with you every step of the way. 1(844) 4FL-GRID (1-844-435-4743)

48 kW1 Fortress Standby Generator System

SKU: 076850
  • Model Number


    Running Watts (NG)*


    Engine Series

    5.0L 4-Cylinder, Operating at 1800 RPM


    Fully Automatic

    Running Amps (LP)


    Alternator Type

    Computer Friendly

    NG Fuel Consumption**

    50% load = 464400 BTU/Hr

    Battery/Battery Charger


    Diagnostic Alerts with Remote System Status

    Low Oil Shutdown, Engine Does Not Start, Low Frequency, Engine Overspeed, Low Voltage, Low Battery Voltage, Oil Temp High, Transfer Switch Fault

    Width (in)


    Weight (lbs)


    Running Watts (LP)*


    Engine Brand

    GM Vortec

    Engine Displacement (cc)


    Voltage (V)

    120/240V AC, Single Phase, 1.0 pf

    Running Amps (NG)


    LP Fuel Consumption**

    50% load = 5.5 gal/hr

    Weekly Exerciser


    Overcrank Protection


    Length (in)


    Height (in)


    Warranty (Product)***

    6 Year Parts, Labor & Travel Limited Warranty

    *NG = Natural Gas; LP = Liquid Propane.
    **Fuel consumption rates are estimated based on normal operating conditions at 1/2 load. Generator operation may be greatly affected by elevation and the cycling operation of multiple electrical appliances - fuel flow rates may vary depending on these factors.
    ***See Operator's Manual for complete warranty details