Generator Sets For Sale

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

Search new and used Generator Sets on MyLittleSalesman.com, with prices from $200 to $1,599,900. Filter by hours, price, or year to find the right Generator near you today.
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 1,917 Generator Listings

1 - 25 of 1,917 listings
1 - 25 of 1,917 listings
Featured Item
Caterpillar XQ125 T4F Generator

2019 Caterpillar XQ125 T4F Generator

$41,250 USD
110% Spill Containment, Battery Charger, Battery Disconnect Switch, Cat Brand Genset, Customer Value Agreement (CVA) 2-year/2,000-hour Customer Value Agreement (CVA), Emissions Level - EPA -...
ConditionUsed
Usage6,694 Hours
Stock NumberRP14959
MLS Number13004413
CategoryGenerator Sets
Last Updated5/19/2026
Location
Abilene, TX, US
Sold By
Warren Power Systems
Featured Item
Caterpillar XQ-60 48KW Generator

2017 Caterpillar XQ-60 48KW Generator

$31,000 USD
110% SPILL CONTAINMENT, 3 WAY FUEL VALVE, 60 HZ, AUTO START, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, CAT BRAND GENSET, COOLANT HEATER, DIESEL, DUAL WALL FUEL TANK, EARTH LEAKAGE...
ConditionUsed
Usage6,800 Hours
Stock NumberEU00101
MLS Number12098435
CategoryGenerator Sets
Last Updated5/18/2026
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 Updated5/18/2026
Location
West Columbia, SC, US
Sold By
Blanchard 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 Updated5/18/2026
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 Updated5/18/2026
Location
Miami, FL, US
Sold By
Pantropic Power
Caterpillar XQ125KVA Generator

2022 Caterpillar XQ125KVA Generator

Recently Updated
$59,500 USD
125C TEMP RISE OVER 40C AMB, 2022 CAT XQ125KVA, 3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB, 480V 60 HZ (XQ125), 60 HZ 100 KW, 60HZ 480 VOLT (WYE), Base Type - Standard, BATTERY CHARGER UL10A...
ConditionUsed
Usage2,368 Hours
Stock NumberVER009
MLS Number13332926
CategoryGenerator Sets
Last Updated5/20/2026
Location
Colby, KS, US
Sold By
Foley Equipment
1996 Energy Dynamics 363PSL1607 Generator

1996 Energy Dynamics 363PSL1607 Generator

Newly Listed
At auction Jun. 23
1996 Energy Dynamics 363PSL1607 generator, Hours: 1,120 on meter, Serial: LM217384-1295, Engine, Cummins, Displacement: 5.9L, Cylinders: 6, Fuel type: Diesel, Features, Generator, Energy...
ConditionUsed
Usage1,120 Hours
Stock NumberFC2647
MLS Number14379361
CategoryGenerator Sets
Last Updated5/20/2026
Location
Fenton, MO, US
Listed By
Purple Wave Auction
1997 Multiquip Whisperwatt 25KVA Towable Generator

1997 Multiquip Whisperwatt 25KVA Towable Generator

Newly Listed
At auction May. 27
Location Washougal WA ***End-User Consignment*** VIN: 7A2115051 Engine: Isuzu 4cyl Diesel *Turns over but won't start.* 3-Phase 480/277 volts, 3-phase 240/139 volts, single phase 240/120...
Lot NumberTEMP3765
ConditionUsed
Usage19,094 Hours
Engine ModelIsuzu 4cyl
Stock Number97420
MLS Number14377538
CategoryGenerator Sets
Last Updated5/19/2026
Location
Washougal, WA, US
Listed By
J Stout Auctions
1991 Caterpillar 604KW Containerized Power Van Gen

1991 Caterpillar 604KW Containerized Power Van Gen

Recently Updated
At auction May. 27
Location: Stanfield OR S/N: AVF263559 Engine: Caterpillar 3412 Diesel 604 KW, Genset s/n 81Z09573, Mounted on 1965 Fruehauf T/A trailer, includes tool room, switch gear, electrical...
Lot NumberTEMP3613
ConditionUsed
Usage6,340 Hours
Engine ModelCaterpillar 3412
Stock Number97072
MLS Number14361655
CategoryGenerator Sets
Last Updated5/19/2026
Location
Stanfield, OR, US
Listed By
J Stout 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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