Generator Sets For Sale

New or Used Generators (Gen Set) by Owners and Dealers

Shop new and used Generator Sets on MyLittleSalesman.com, with prices from $200 to $12,345,678. Filter by hours, price, or year to find the right Generator closest to you.
Generator sets, also known as a "gen set", can provide power to any job site that is not connected to grid, needs an emergency supply, or wants to perform peak shaving. The generators come in various sizes and power ratings. The fuel type of the generator may be diesel, gasoline, or natural gas, and they may be trailer-mounted, mobile, or stationary. If you're looking for just a power unit, browse our industrial power unit section.
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Showing 1 - 25 of 1,975 Generator Listings

1 - 25 of 1,975 listings
1 - 25 of 1,975 listings
Featured Item
Generator 20 KW 2016 Multiquip Diesel Portable Trailer Mounted 3 Ph 120 / 240/ 480V NON DEF!

Generator 20 KW 2016 Multiquip Diesel Portable Trailer Mounted 3 Ph 120 / 240/ 480V NON DEF!

Newly Listed
$16,500 USD
Generator 20 KW 2016 Multiquip Diesel Portable Trailer Mounted 3 Ph 120v 240v 480v NON DEF! NOW OFFERING EASY BUSINESS FINANCING! WE TAKE TRADES!! Please call Gary with any questions or to...
ConditionUsed
Usage4,946 Hours
Stock NumberBC0426576100DS165
MLS Number14312454
CategoryGenerator Sets
Last Updated4/16/2026
Location
Orem, UT, US
Sold By
Global Remarketing
Featured Item
Caterpillar 3406 Generator

1981 Caterpillar 3406 Generator

$24,500 USD
Auto Start, Battery Charger, Battery Set, Cat Brand Genset, Circuit Breaker, Control Panel - Other, Engine Type - Diesel, Frequency - 60 Hz, Generator, Jacket Water Heater, No Enclosure,...
ConditionUsed
Usage447 Hours
Stock NumberEU00183
MLS Number14099064
CategoryGenerator Sets
Last Updated4/15/2026
Location
Knoxville, TN, US
Sold By
Stowers Power Systems
Featured Item
Multiquip DCA150 Generator

2014 Multiquip DCA150 Generator

$45,000 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Camlocks, Emissions Level, Engine Type - Diesel, Frequency - 60 Hz, Fuel Tank Type - Dual Wall, Generator,...
ConditionUsed
Usage5,147 Hours
Stock NumberE16389
MLS Number13725278
CategoryGenerator Sets
Last Updated4/15/2026
Location
West Columbia, SC, US
Sold By
Blanchard Power Systems
Featured Item
Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator

2014 Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator

$110,000 USD
110% SPILL CONTAINMENT, 3 WAY FUEL VALVE, 60 HZ, AUTO START, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, CAT BRAND GENSET, CAT C13 ENGINE, CATERPILLAR XA350 TIER4I, CIRCUIT BREAKER, CEM,...
Inspection Report
ConditionUsed
Usage6,727 Hours
Stock NumberNR12802
MLS Number13305187
CategoryGenerator Sets
Last Updated4/15/2026
Location
Eugene, OR, US
Sold By
Peterson Power Systems
Featured Item
Caterpillar XQ0350 Generator

2014 Caterpillar XQ0350 Generator

$155,000 USD
110% SPILL CONTAINMENT, 3 WAY FUEL VALVE, 60 HZ, AUTO START, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, CAT BRAND GENSET, CAT C13 ENGINE, CATERPILLAR XA350 TIER4I, CIRCUIT BREAKER, CEM,...
Inspection Report
ConditionUsed
Usage5,491 Hours
Stock NumberUE01157
MLS Number11077982
CategoryGenerator Sets
Last Updated4/15/2026
Location
Eugene, OR, US
Sold By
Peterson Power Systems
Featured Item
Caterpillar XQ 2000 (277-480 V) 2000@1800/3/SBY EKW@RPM/PH/R Generator

Caterpillar XQ 2000 (277-480 V) 2000@1800/3/SBY EKW@RPM/PH/R Generator

$899,000 USD
60 HZ, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, BRAND NEW CONTAINER, NEW 1250GLS FUEL TANK, NEW HORIZONTAL RADIATOR, NEW EXHAUST SYSTEM, GENSET CONTROL PANEL EMCP 4.4 WITH MULTIFUNCTION...
ConditionUsed
Usage1,000 Hours
MLS Number11819023
CategoryGenerator Sets
Last Updated4/15/2026
Location
Miami, FL, US
Sold By
Pantropic Power
Wacker Neuson G25 Diesel Generator

Wacker Neuson G25 Diesel Generator

Newly Listed
Contact for price
Location: ISA WI Yard - Merrill, WI, Isuzu BZ-4LE2T Turbo Diesel Engine, 20KW Generator, 50 Amp and 20 Amp Outlets, Remote Start, Approx. 34 Hour Run Time, Trailer Model: MGT1E, Serial:...
ConditionUsed
Stock Number99716
MLS Number14320721
CategoryGenerator Sets
Last Updated4/19/2026
Location
Merrill, WI, US
Sold By
Integrity Sales and Auction LLC
Caterpillar XQ20 Diesel Generator

2011 Caterpillar XQ20 Diesel Generator

Newly Listed
Contact for price
Location: ISA WI Yard - Merrill, WI, Caterpillar C2.2 Diesel Engine, 20KW Class, Prime rating: ~18 kW (22.5 kVA), Voltage: 208-480V (3-phase capable), Fuel burn: ~1.5 gal/hr @ full load,...
ConditionUsed
Usage8,613 Hours
Stock Number99278
MLS Number14320714
CategoryGenerator Sets
Last Updated4/19/2026
Location
Merrill, WI, US
Sold By
Integrity Sales and Auction LLC
Wacker Neuson G50 Diesel Generator

Wacker Neuson G50 Diesel Generator

Recently Updated
Contact for price
Location: ISA WI Yard - Merrill, WI, John Deere 4045DF270D 4.5L Diesel Engine, 38KW Generator, Single Phase/3 Phase, Trailer Model: MGT2S, Torsion Axle, ST225/75R15 Tires, Hours Shown: 3690...
ConditionUsed
Usage3,690 Hours
Stock Number98284
MLS Number14303644
CategoryGenerator Sets
Last Updated4/19/2026
Location
Merrill, WI, US
Sold By
Integrity Sales and Auction LLC

The Marketplace for Buying and Selling Industrial Generators

A generator set, aka a "gen set", can provide power to any job site that is not connected to grid or otherwise needs an emergency supply. In addition, a gen set can save money by producing power during peak hours when energy costs the most (a practice known as “peak shaving”). We are pleased to offer a huge listing of gas, natural gas, and diesel generator sets for all of your power supply needs.

Choosing the Right Gen Set

A gen set can be split into three main types:

  • Diesel Generator Sets – A diesel genset has better fuel efficiency than a gas gen set, but usually cost more. Earlier models are much noisier than modern versions.
  • Gasoline Generator Sets – Although less expensive than diesel, their components are actually more expensive to replace. More popular than diesel when it comes to intermittent use.
  • Natural Gas – The most expensive gen set to operate is also potentially explosive, so caution must be taken at all times. However, since many buildings have a natural gas line, you usually won’t need to store fuel.

Whether you choose a natural gas, gasoline, or diesel genset, you will need to decide on the best cooling system. Again, there are three types:

  • Air-cooled – The loudest and cheapest cooling system with low maintenance costs (typically received for smaller generator sets).
    Typically used for power levels ranging from 8 to 20 kilowatts.
  • Water-cooled – Larger generator sets require liquid cooling, which is quieter than air, but also more complex and oftentimes messier.
    Typically used for power levels ranging from 25 to 60 kilowatts.
  • Hydrogen – The most powerful gen set is also the most dangerous; hydrogen is highly combustible and most be closely monitored.
    Typically used for power levels above 60 kilowatts.
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