Generator Sets For Sale

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

Explore marketplace listings for new and used Generator Sets on MyLittleSalesman.com, with prices from $500 to $1,599,900. Filter by hours, price, or year to refine by spec.
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 1,931 Generator Listings

1 - 25 of 1,931 listings
1 - 25 of 1,931 listings
Featured Item
Caterpillar 3412 Generator

1995 Caterpillar 3412 Generator

$99,000 USD
Auto Start, Base Tank, Battery Charger, Battery Set, Cat Brand Genset, Circuit Breaker, Control Panel - Other, Enclosure Lights, Enclosure Material - Aluminum, Engine Type - Diesel, EPA...
ConditionUsed
Usage541 Hours
Stock NumberEU00147
MLS Number12740183
CategoryGenerator Sets
Last Updated3/12/2026
Location
Knoxville, TN, US
Sold By
Stowers Power Systems
Featured Item
Caterpillar 3512 Generator

1986 Caterpillar 3512 Generator

$141,915.14 USD
3 POLE CIRCUIT BREAKER, 60 HZ, AUTO START, CAT BRAND GENSET, CSA CERTIFICATION, DIESEL, EMCP 4.2 CONTROL PANEL, Online Owner's Manual, Package Type Cat Standard Unit, STANDBY,
ConditionUsed
Usage1,500 Hours
Stock NumberE220008L
MLS Number11814955
CategoryGenerator Sets
Last Updated3/12/2026
Location
Pointe-Claire, QC, Canada
Sold By
Toromont 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 Updated3/12/2026
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 Updated3/12/2026
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 Updated3/12/2026
Location
Fort Myers, FL, US
Sold By
Pantropic Power
Featured Item
Caterpillar XQ 1250 Generator

1990 Caterpillar XQ 1250 Generator

$489,000 USD
Auto Start, Battery Charger, Camlocks, Engine Governor, Engine Type - Diesel, Frequency - 60 Hz, Fuel Tank Type - Dual Wall, Generator, Hitch, Trailer, Permanent Magnet Generator (PMG),...
Inspection Report
ConditionUsed
Usage670 Hours
MLS Number12860676
CategoryGenerator Sets
Last Updated3/12/2026
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 Updated3/12/2026
Location
Miami, FL, US
Sold By
Pantropic Power
MTU 16V2000 Generator

2007 MTU 16V2000 Generator

Price Drop $149,000 USD
Used MTU 1000DSEC Generator Set; 2007 Model – 400 Hours; 1000kW Standby Rated; 480/277V; Weather Enclosure; Control Panel; 1600A Breaker; MTU 16V2000 Engine; Jacket Water Heater; Battery...
ConditionUsed
Usage400 Hours
Horse Power1495 HP
Engine Model16V2000 G84
Emission RatingUSA Tier 2
Stock Number1734
MLS Number14161434
CategoryGenerator Sets
Last Updated3/31/2026
Location
Spring, TX, US
Sold By
NineX Power Systems LLC
MTU 16V2000 Generator

2007 MTU 16V2000 Generator

Price Drop $149,000 USD
Used MTU 1000DSEC Generator Set; 2007 Model – 418 Hours; 1000kW Standby Rated; 480/277V; Weather Enclosure; Control Panel; 1600A Breaker; MTU 16V2000 Engine; Jacket Water Heater; Battery...
ConditionUsed
Usage418 Hours
Horse Power1495 HP
Engine Model16V2000 G84
Emission RatingUSA Tier 2
Stock Number1733
MLS Number14161433
CategoryGenerator Sets
Last Updated3/31/2026
Location
Spring, TX, US
Sold By
NineX Power Systems LLC
Caterpillar 3412C 725 KW Generator

2001 Caterpillar 3412C 725 KW Generator

Price Drop $325,000 USD
110% Spill Containment, 3 Way Fuel Valve, Auto Start, Battery Charger, Battery Disconnect Switch, Coolant Heater, Engine Type - Diesel, Frequency - 60 Hz, Fuel Tank Type - Dual Wall, Jacket...
ConditionUsed
Usage830 Hours
Stock NumberUE2364
MLS Number13773790
CategoryGenerator Sets
Last Updated3/31/2026
Location
Albuquerque, NM, US
Sold By
Wagner Equipment Co.
Caterpillar XQ 35 Generator

2020 Caterpillar XQ 35 Generator

Price Drop $21,000 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Camlocks, Cat Brand Genset, Coolant Heater, Engine Type - Diesel, Frequency - 60 Hz, Generator, Generator...
ConditionUsed
Usage4,361 Hours
Stock NumberUE2348
MLS Number13773778
CategoryGenerator Sets
Last Updated3/31/2026
Location
Albuquerque, NM, US
Sold By
Wagner Equipment Co.
Multiquip DCA125SSIU4F Generator

2024 Multiquip DCA125SSIU4F Generator

Price Drop $85,000 USD
110% Spill Containment, Auto Start, Battery Charger, Camlocks, Coolant Heater, Engine Type - Diesel, Frequency - 60 Hz, Generator, Generator Space Heater, Hitch, Trailer, Jacket Water Heater...
ConditionUsed
Usage481 Hours
Stock NumberUE2339
MLS Number13773772
CategoryGenerator Sets
Last Updated3/31/2026
Location
Albuquerque, NM, US
Sold By
Wagner Equipment Co.
Caterpillar 3412C 800KW Generator

2001 Caterpillar 3412C 800KW Generator

Price Drop $375,000 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Cat Brand Genset, Coolant Heater, Engine Type - Diesel, Frequency - 60 Hz, Fuel Tank Type - Dual Wall,...
ConditionUsed
Usage695 Hours
Stock NumberUE2333
MLS Number13773764
CategoryGenerator Sets
Last Updated3/31/2026
Location
Albuquerque, NM, US
Sold By
Wagner Equipment Co.
Multiquip DCA220SSJU4F Generator

2016 Multiquip DCA220SSJU4F Generator

Price Drop $60,000 USD
110% Spill Containment, Auto Start, Battery Charger, Camlocks, Coolant Heater, Engine Type - Diesel, Frequency - 60 Hz, Hitch, Trailer, Jacket Water Heater, Rating - Continuous, Robust...
ConditionUsed
Usage8,249 Hours
Stock NumberUE2327
MLS Number13773746
CategoryGenerator Sets
Last Updated3/31/2026
Location
Albuquerque, NM, US
Sold By
Wagner Equipment Co.

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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