Generator Sets For Sale

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

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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1-25 of 1,950 results
1-25 of 1,950 results
Featured Item
Multiquip DCA150 Generator
4 0

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 Updated8/12/2025
Location
West Columbia, SC, US
Sold By

Blanchard Power Systems

Featured Item
Caterpillar APS100 - 208-240-480 Generator
4 0

2014 Caterpillar APS100 - 208-240-480 Generator

$6,792.10 USD
Auto Start, Hitch, Trailer, Jacket Water Heater,
ConditionUsed
Usage21,614 Hours
Stock NumberRE15005C
MLS Number13698101
CategoryGenerator Sets
Last Updated8/12/2025
Location
Brampton, ON, Canada
Sold By

Toromont Power Systems

Featured Item
Caterpillar XQ35 Generator
8 0

2017 Caterpillar XQ35 Generator

$21,500 USD
Package Type Cat Standard Unit,
ConditionUsed
Usage4,406 Hours
MLS Number13674741
CategoryGenerator Sets
Last Updated8/12/2025
Location
Garner, NC, US
Sold By

GREGORY POOLE POWER SYSTEMS

Featured Item
Caterpillar XQ35 Generator
10 0

2016 Caterpillar XQ35 Generator

$19,900 USD
Package Type Cat Standard Unit,
ConditionUsed
Usage4,885 Hours
MLS Number13671814
CategoryGenerator Sets
Last Updated8/12/2025
Location
Garner, NC, US
Sold By

GREGORY POOLE POWER SYSTEMS

Featured Item
Caterpillar 3412 Generator
13 0

1995 Caterpillar 3412 Generator

Contact for price
Online Owner's Manual,
ConditionUsed
Usage541 Hours
Stock NumberEU00147
MLS Number12740183
CategoryGenerator Sets
Last Updated8/12/2025
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

Featured Item
Caterpillar XQ-60 48KW Generator
8 0

2017 Caterpillar XQ-60 48KW Generator

$31,500 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 Updated8/12/2025
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

Featured Item
Caterpillar XQ500 STEP DECK Generator
14 0

2010 Caterpillar XQ500 STEP DECK Generator

$226,000 USD
Package Type Dealer Packaged Unit,
ConditionUsed
Usage1,476 Hours
MLS Number13644387
CategoryGenerator Sets
Last Updated8/12/2025
Location
Garner, NC, US
Sold By

GREGORY POOLE POWER SYSTEMS

Featured Item
Doosan G325WCU-3A Diesel Generator
8 4

2012 Doosan G325WCU-3A Diesel Generator

$65,000 USD
2012 Doosan G325WCU-3A Generator, Only 4,472 Hrs., Cummins QSL9-GB Diesel Engine, Ready to Work!, Call Christopher Lillo 310~977~7903,
ConditionUsed
Usage4,472 Hours
Stock NumberCA05042025CL
MLS Number13558814
CategoryGenerator Sets
Last Updated7/22/2025
Location
Los Angeles, CA, US
Sold By

Lillo Machinery, Inc.

Featured Item
Caterpillar XQ200 Generator
4 0

2014 Caterpillar XQ200 Generator

$64,500 USD
Online Owner's Manual,
ConditionUsed
Usage9,596 Hours
Stock Number028220
MLS Number12272001
CategoryGenerator Sets
Last Updated8/12/2025
Location
San Diego, CA, US
Sold By

Hawthorne Power Systems

Featured Item
Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator
8 0

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 Updated8/12/2025
Location
Eugene, OR, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar G3406TA Generator
1 0

2012 Caterpillar G3406TA Generator

$31,100 USD
Online Owner's Manual,
ConditionUsed
Usage9,985 Hours
Stock NumberRP11315
MLS Number10875205
CategoryGenerator Sets
Last Updated8/12/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Featured Item
Caterpillar XQ350 Mobile Power Module Generator Set
8 0

2014 Caterpillar XQ350 Mobile Power Module Generator Set

Contact for price
Online Owner's Manual,
ConditionUsed
Usage7,501 Hours
Stock Number028453
MLS Number12271997
CategoryGenerator Sets
Last Updated8/12/2025
Location
San Diego, CA, US
Sold By

Hawthorne Power Systems

Featured Item
Caterpillar 3516 RADIATOR Generator
5 0

2001 Caterpillar 3516 RADIATOR Generator

$5,000 USD
Inspection Report
ConditionUsed
Usage2,005 Hours
Stock NumberE16563
MLS Number13262221
CategoryGenerator Sets
Last Updated8/12/2025
Location
Florence, SC, US
Sold By

Blanchard Power Systems

Featured Item
Caterpillar XQ350 Mobile Power Module Generator Set
12 0

2013 Caterpillar XQ350 Mobile Power Module Generator Set

$145,500 USD
CATERPILLAR XQ350 GENERATOR, Online Owner's Manual, SKID MOUNTED,
Inspection Report
ConditionUsed
Usage1,845 Hours
Stock NumberUE01271
MLS Number11379738
CategoryGenerator Sets
Last Updated8/12/2025
Location
San Leandro, CA, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar 3516B Generator Set
5 0

1999 Caterpillar 3516B Generator Set

$340,000 USD
60 HZ, CAT BRAND GENSET, CONTINUOUS, DIESEL, EMCP II+, GENERATORS, LESS THAN 1000 SINCE NEW, Online Owner's Manual, PRIME, STANDBY, USED 3516B 2000KW 2500KVA 480V 3PH 60HZ OPEN SKID,
ConditionUsed
Usage1,000 Hours
MLS Number9118451
CategoryGenerator Sets
Last Updated8/12/2025
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar G20F3 Generator
4 0

2009 Caterpillar G20F3 Generator

$3,500 USD
ConditionUsed
Usage7 Hours
Stock NumberEQ027801
MLS Number12641755
CategoryGenerator Sets
Last Updated8/12/2025
Location
Milford, MA, US
Sold By

Milton CAT Power Systems

Featured Item
Caterpillar 3516B Generator
7 0

2024 Caterpillar 3516B Generator

$565,000 USD
** ENGINE WARRANTY BY MFG, 1825KW PRIME RATING 480V 60HZ 1800RPM - 1600KW PRIME RATING 400V 50HZ 15000 RPM, 60 HZ, CAT BRAND GENSET, DIESEL, EMCP 3.2 CONTROL PANEL - JACKET WATER HEATER,...
ConditionUsed
MLS Number965992
CategoryGenerator Sets
Last Updated8/12/2025
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar XQ 1250 Generator
1 0

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 Updated8/12/2025
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
6 0

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 Updated8/12/2025
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
SOLAR TURBINES TAURUS T-60 Generator
15 0

2009 SOLAR TURBINES TAURUS T-60 Generator

Contact for price
Quality Dual Fuel Turbine. 2009 Solar T60 Taurus - Portable Turbine. Call today for details.
ConditionUsed
Usage2,505 Hours
MLS Number12700614
CategoryGenerator Sets
Last Updated8/12/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Featured Item
Marathon Generator - MARATHON ELECTRIC MOTOR -480Volts/150Amps
6 0

Marathon Generator - MARATHON ELECTRIC MOTOR -480Volts/150Amps

$4,500 USD
MagnaMax AC generator 480Volts/150Amps
ConditionUsed
Attachment MakeMarathon Electric
MLS Number10674696
CategoryGenerator Sets
Last Updated7/24/2025
Location
Middleton, WI, US
Sold By

NORTHWESTERN STONE LLC

Various Transformers
23 0

Various Transformers

Newly Listed
At auction Aug. 12
GovDeals is an Online Auction – LOT#16992-690 Auction Ends 08/14/2025. To see full details, additional photos and current bid, please use this link- https://govdeals.bid/4ozBG7I Multiple...
ConditionUsed
Stock Number16992-690
MLS Number13753993
CategoryGenerator Sets
Last Updated8/12/2025
Location
PO Box 1449, OK, US
Listed By

GovDeals, Inc.

Baldor IGLC350-2NU Generator
6 0

2012 Baldor IGLC350-2NU Generator

Newly Listed
Contact for price
Used Baldor 217kW Liquid Propane generator. This power unit features a Sound Attenuated enclosure and has approximately 872 hours of use. It provides Three-Phase power at 120/208v and is...
ConditionUsed
Usage872 Hours
Stock Number92468
MLS Number13753798
CategoryGenerator Sets
Last Updated8/12/2025
Location
Brighton, CO, US
Sold By

Generator Source

Cummins DFEK Diesel Generator
11 0

2006 Cummins DFEK Diesel Generator

Newly Listed
$79,900 USD
Cummins 500 kW standby (455 kW prime) diesel generator set, model DFEK, SN-F060936360. Cummins QSX15-G9 engine rated 755 HP at 1800 RPM, SN-79187646, EPA Tier 2 emissions. 3/60/277/480V, 12...
ConditionUsed
Usage500 Hours
Horse Power755 HP
Engine ModelCummins QSX15-G9
Emission RatingUSA Tier 2
Stock NumberCentral States #4775
MLS Number13753793
CategoryGenerator Sets
Last Updated8/12/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Cummins DFEK Diesel Generator
11 0

2003 Cummins DFEK Diesel Generator

Newly Listed
$59,900 USD
Cummins 500 kW standby (455 kW prime) diesel generator set, model DFEK, SN-C030480770. Cummins QSX15-G9 engine rated 755 HP at 1800 RPM, SN-79004665. 3/60/277/480V, 12 lead reconnectable to...
ConditionUsed
Usage887 Hours
Horse Power755 HP
Engine ModelCummins QSX15-G9
Emission RatingUSA Tier 2
Stock NumberCentral States #4777
MLS Number13753631
CategoryGenerator Sets
Last Updated8/12/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Did you find what you were looking for? Yes No

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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