Generator Sets For Sale

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

Explore 1,956 new and used Generator Sets on MyLittleSalesman.com, with prices from $500 to $1,349,900. Filter by hours, price, or year to find job-ready Generator Sets near you with the specs you need.
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 1,956 Generator Listings

1 - 25 of 1,956 listings
1 - 25 of 1,956 listings
Featured Item
2001 Caterpillar 3412PKGG 700KW 480V Generator

2001 Caterpillar 3412PKGG 700KW 480V Generator

$66,000 USD
700Kw standby rated, 635kW prime rated generator set. Generator comes with Sound Attenuated Enclosure and Ground Fault Relay System. 3412 Cat Engine with Regular System Changes every 500 Hrs...
ConditionUsed
Usage9,256 Hours
Engine ModelCaterpillar 3412
MLS Number14146681
CategoryGenerator Sets
Last Updated2/16/2026
Location
Grants Pass, OR, US
Sold By
Private Party
Featured Item
2023 GENERAC G-25 TRAILER MOUNTED 25KW GENERATOR - ISUZU DIESEL - ONLY 3,000 HOURS - LIKE NEW

2023 GENERAC G-25 TRAILER MOUNTED 25KW GENERATOR - ISUZU DIESEL - ONLY 3,000 HOURS - LIKE NEW

$13,500 USD
PRO-QUIPLLC.COM CALL 954-367-3867 2023 GENERAC MDG25IF4 25KW TRAILER MOUNTED GENERATOR 3 PHASE ISUZU TURBO DIESEL ONLY 3,034 HOURS STILL LIKE NEW 100% RUST FREE AND IMMACULATE FRESH...
ConditionUsed
Usage3,034 Hours
Horse Power49 HP
Engine ModelIsuzu 2.2
Weight2771
Stock Number25 KW - ISUZU TURBO DIESEL - 3 PHASE
MLS Number14021856
CategoryGenerator Sets
Last Updated2/25/2026
Location
Pompano Beach, FL, US
Sold By
Pro Quip
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 Updated2/9/2026
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 Updated2/9/2026
Location
Eugene, OR, US
Sold By
Peterson Power Systems
Featured Item
Caterpillar XQ2000 Mobile Power Module Generator Set

2023 Caterpillar XQ2000 Mobile Power Module Generator Set

$1,200,000 USD
3 Way Fuel Valve, Auto Start, Battery Charger, Camlocks, CE Plate, Emissions Level, Engine Governor, Engine Type - Diesel, Fire Extinguisher, Frequency - 50 / 60 Hz, Fuel Tank Type - Dual...
Inspection Report
ConditionUsed
MLS Number12860680
CategoryGenerator Sets
Last Updated2/9/2026
Location
Fort Myers, FL, US
Sold By
Pantropic Power
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 Updated2/9/2026
Location
Miami, FL, US
Sold By
Pantropic Power
Caterpillar XQ125KVA Generator

2023 Caterpillar XQ125KVA Generator

Recently Updated
$63,000 USD
*CERTIFICATION AR, *CONNECTION GP, *END USE: EP RETAIL RENTAL, *ENGINE ARPRIM, *GENERAL AR, *GENERATOR ARPWR, *HEATER GPGENERATOR, *HEATER GPJW, *OPTIONAL BATTERY CHARGER UL10A, *PERMANENT...
ConditionUsed
Usage2,992 Hours
Stock NumberUEN222
MLS Number13427570
CategoryGenerator Sets
Last Updated3/7/2026
Location
Call Foley, KS, US
Sold By
Foley Equipment
Caterpillar G3520H Generator

2018 Caterpillar G3520H Generator

Recently Updated
$1,952,549.37 USD
*** Standalone e-house and maintenance shed included with purchase of all four (4) units. ***, All electrical and mechanical drawings available, Auto Start, Automated air recirculation...
ConditionUsed
Usage14,800 Hours
Stock NumberC240008E
MLS Number12700198
CategoryGenerator Sets
Last Updated3/7/2026
Location
Kanata, ON, Canada
Sold By
Toromont Power Systems
Multiquip DCA150SS Generator

2023 Multiquip DCA150SS Generator

Recently Updated
$105,000 USD
BALL COUPLER 2 5/16 14K, BATT CHG 10A, CCV HEATER, ENGINE S/N PE6068U111751, JOHN DEERE TIER 4F ENV, KIT POWERBALANCE, TRAILER DCA150-180SSJU4F3 ELEC, VIN # 5SLBG1820PL042946,
ConditionUsed
Usage1,135 Hours
Stock Number7601385
MLS Number12261372
CategoryGenerator Sets
Last Updated3/7/2026
Location
Casper, WY, US
Sold By
Wyoming Machinery Company
Caterpillar XQ230KVA Generator

2019 Caterpillar XQ230KVA Generator

Recently Updated
$69,600 USD
125C TEMP RISE OVER 40C AMB, 2019 CAT XQ230KVA, 3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB, 60 HZ 200 KW, 60HZ 480 VOLT (WYE), Base Type - Standard, CERTIFICATION AR, CLEAN EMISSIONS MOD INST,...
ConditionUsed
Usage6,369 Hours
Stock NumberVER019
MLS Number13401447
CategoryGenerator Sets
Last Updated3/7/2026
Location
Kansas City, MO, US
Sold By
Foley Equipment
Winco 20 PT 0F-3/C Standby Generator

Winco 20 PT 0F-3/C Standby Generator

Newly Listed
At auction Mar. 11
Winco 20 PT 0F-3/C Standby Generator, Mounted on a 2 wheel Cart, tires- G-78-15, pull type, pin hitch, 540 PTO, 115/230 volts, Single Phase, 20000 Continuous Watts, 8.7 Amps, 3600 RPM, Class...
ConditionUsed
Stock NumberKN4347
MLS Number14227752
CategoryGenerator Sets
Last Updated3/7/2026
Location
Bloomington, NE, US
Listed By
BigIron Auctions
2007 MQ Power MQP50IVP Generator

2007 MQ Power MQP50IVP Generator

Newly Listed
At auction Mar. 26
2007 MQ Power MQP50IVP generator, Hours: 5,958 on meter, VIN: 4JUBF11278N030486, Serial: 694167-0907, Unit #: 86233775, Engine, Iveco F4GE0455BF, Displacement: 4.5L, Cylinders: 4, Fuel...
ConditionUsed
Usage5,958 Hours
Stock NumberYA2690
MLS Number14227548
CategoryGenerator Sets
Last Updated3/7/2026
Location
Wichita, KS, US
Listed By
Purple Wave Auction
2000 Olympian G25F1S 21 kW Standby Gen Set

2000 Olympian G25F1S 21 kW Standby Gen Set

Recently Updated
At auction Mar. 4
2000 Olympian G25F1S 21kW Standby Gen Set, 78 hrs showing, Skid Mount Generator, Ford 4-Cylinder LP Engine, Rated Power: 21 kVA / 21 kW, Rated Voltage: 240/120 Volts, 1 Phase, Rated...
ConditionUsed
Stock NumberLD1505
MLS Number14157736
CategoryGenerator Sets
Last Updated3/6/2026
Location
Waterloo, NE, US
Listed By
BigIron Auctions

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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