Briggs and Stratton 12kW Fortess GeneratorNew

With its sleek, compact profile, the 12kW1 Home Standby Generator adds new dimension to “Powering More for Less."

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  • Powered by our high-quality Vanguard engine, improved muffler design and re-engineered alternator intake ducting, the new 12kW is 60% quieter than our old 12kW.
  • Designed to weather the elements, the system's enclosure is made from automotive-grade Galvanneal steel to resist rust. Its advanced powder coat paint process results in years of protection against chips and abrasions.
  • Have a tight lot line? Worried about your curb appeal? Install your generator as close as 18" from your home. Our generators are in compliance with the stringent National Fire Protection Agency 37 standard.
  • With the streamlined, compact design, the new 12kW is 50% smaller than our previous 12kW generator.


  • 6 year parts, labor & travel limited warranty.
Contact your Sales Rep for Fleet Pricing
40546 Fortress 12kW 1018 $4,399.00
Plus freight!

All prices, descriptions, and specifications subject to change without notice. Items may not be exactly as illustrated.


Running Watts (NG)*11,000
Engine SeriesVanguard™
OperationFully Automatic
Running Amps (LP)50
Alternator TypeComputer Friendly
NG Fuel Consumption**50% Load 116.9 ft3 /hr
Battery/Battery ChargerYes
Diagnostic Alerts with Remote System StatusLow Oil Shutdown, Engine Does Not Start, Low Frequency, Engine Overspeed, Low Voltage, Low Battery Voltage, Oil Temp High, Transfer Switch Fault
Width (in)26
Weight (lbs)318
Running Watts (LP)*12,000
Engine BrandBriggs & Stratton
Engine Displacement (cc)627
Voltage (V)120/240V AC, Single Phase, 1.0 pf
Running Amps (NG)45.8
LP Fuel Consumption**50% Load = 1.7 gal/hr
Weekly ExerciserYes
Overcrank ProtectionYes
Length (in)28
Height (in)37.2
*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.

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