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 1,851 results
1-25 of 1,851 results
Featured Item
Caterpillar XQ200 Generator
4 0

2014 Caterpillar XQ200 Generator

Call for price
Online Owner's Manual,
ConditionUsed
Usage7,540 Hours
Stock Number028220
MLS Number12272001
CategoryGenerator Sets
Last Updated2/24/2025
Location
San Diego, CA, US
Sold By

Hawthorne Power Systems

Featured Item
Caterpillar XQ30 Generator
11 0

2015 Caterpillar XQ30 Generator

$18,762 USD
CATERPILLAR XQ30 GENERATOR, Horsepower 49.0 hp, Online Owner's Manual, TRAILER VIN #16MBB1311FG072685,
Inspection Report
ConditionUsed
Usage18,961 Hours
Stock NumberUE01350
MLS Number12165367
CategoryGenerator Sets
Last Updated2/24/2025
Location
San Leandro, CA, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar 3512 Generator
13 0

1998 Caterpillar 3512 Generator

$328,372.81 USD
60 HZ, AUTO START, CAT BRAND GENSET, DIESEL, Online Owner's Manual, STANDBY,
ConditionUsed
Usage671 Hours
Stock NumberE210009A
MLS Number10860410
CategoryGenerator Sets
Last Updated2/24/2025
Location
Pointe-Claire, QC, Canada
Sold By

Toromont 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 Updated2/24/2025
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 Updated2/24/2025
Location
San Leandro, CA, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar G20F3 Generator
4 0

2009 Caterpillar G20F3 Generator

$3,500 USD
ConditionUsed
Usage7 Hours
Stock NumberEQ027801
MLS Number12641755
CategoryGenerator Sets
Last Updated2/24/2025
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 Updated2/24/2025
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar XQ 35 Generator
1 0

2023 Caterpillar XQ 35 Generator

$44,750 USD
110% Spill Containment, Cat Brand Genset, Emissions Level - EPA - EPA TIER 4f, Engine Governor, Engine Type - Diesel, Frequency - 60 Hz, Fuel Tank Type - Dual Wall, Generator, Hitch, Trailer...
ConditionUsed
Usage2 Hours
Stock NumberRP15612
MLS Number13174651
CategoryGenerator Sets
Last Updated2/24/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Featured Item
Caterpillar XQ 1750 Generator
6 0

2000 Caterpillar XQ 1750 Generator

$685,000 USD
Package Type Dealer Packaged Unit,
ConditionUsed
Usage300 Hours
MLS Number12472297
CategoryGenerator Sets
Last Updated2/24/2025
Location
Fort Myers, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar 3412 Generator
10 0

1995 Caterpillar 3412 Generator

Call for price
Online Owner's Manual,
ConditionUsed
Usage541 Hours
Stock NumberEU00147
MLS Number12740183
CategoryGenerator Sets
Last Updated2/24/2025
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

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 Updated2/24/2025
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar XQ230 T4F Generator
8 0

2019 Caterpillar XQ230 T4F Generator

Call for price
Online Owner's Manual,
ConditionUsed
Usage703 Hours
Stock NumberEU00120
MLS Number12030926
CategoryGenerator Sets
Last Updated2/24/2025
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

Caterpillar 3412 DIT Diesel Generator
7 0

Caterpillar 3412 DIT Diesel Generator

Newly Listed
Call for price
500kW Caterpillar 3412DIT industrial diesel generator set skid mounted with weather house enclosure, 480V, 60Hz, standby take out, removed from local hospital 3/2022, hospital grade muffler,...
ConditionUsed
Engine ModelCaterpillar 3412DIT
Stock Number102631
MLS Number13416007
CategoryGenerator Sets
Last Updated2/25/2025
Location
Houston, TX, US
Sold By

Swift Equipment Solutions

Onan 180 KW Enclosed Diesel Generator
9 0

Onan 180 KW Enclosed Diesel Generator

Newly Listed
Call for price
180kW Onan enclosed diesel generator set powered by a Cummins NT855 engine, 277/480V, 60Hz, 1800rpm, 843 hours with a 200-gallon skid base fuel tank
ConditionUsed
Usage843 Hours
Engine ModelCummins NT855G
Stock Number103728
MLS Number13415679
CategoryGenerator Sets
Last Updated2/25/2025
Location
Houston, TX, US
Sold By

Swift Equipment Solutions

Cummins C1500D6E Diesel Generator
6 0

2025 Cummins C1500D6E Diesel Generator

Recently Updated
$559,500 USD
*****ETA July 1, 2025**** New Cummins 1500 kW standby (1364 kW prime) diesel generator set model C1500D6E. Cummins QSK38 NR2 engine rated 2225 HP at 1800 RPM, EPA Tier 2 emissions. 3/60/277...
ConditionNew
Horse Power2225 HP
Engine ModelCummins QSK38 NR2
Emission RatingUSA Tier 2
Stock Number4042
MLS Number13318555
CategoryGenerator Sets
Last Updated2/25/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Perkins 60 KW Diesel Generator
4 1

Perkins 60 KW Diesel Generator

Recently Updated
$9,975 USD
60kW Perkins open skid mounted diesel generator set, 208V, 60Hz, 3 phase, 1800rpm, 100amp breaker
ConditionUsed
Stock Number103564
MLS Number13204285
CategoryGenerator Sets
Last Updated2/25/2025
Location
Houston, TX, US
Sold By

Swift Equipment Solutions

Cummins C1500D6E Diesel Generator
6 0

2025 Cummins C1500D6E Diesel Generator

Recently Updated
$559,500 USD
*****ETA April 16, 2025**** New Cummins 1500 kW standby (1364 kW prime) diesel generator set model C1500D6E. Cummins QSK38 NR2 engine rated 2225 HP at 1800 RPM, EPA Tier 2 emissions. ...
ConditionNew
Horse Power2225 HP
Engine ModelCummins QSK38 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4033
MLS Number12744036
CategoryGenerator Sets
Last Updated2/25/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Cummins C1500D6E Diesel Generator
6 0

2025 Cummins C1500D6E Diesel Generator

Recently Updated
$559,500 USD
*****ETA April 17, 2025**** New Cummins 1500 kW standby (1364 kW prime) diesel generator set model C1500D6E. Cummins QSK38 NR2 engine rated 2225 HP at 1800 RPM, EPA Tier 2 emissions. ...
ConditionNew
Horse Power2225 HP
Engine ModelCummins QSK38 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4024
MLS Number12562006
CategoryGenerator Sets
Last Updated2/25/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Caterpillar 500 KW Natural Gas Generator
9 0

Caterpillar 500 KW Natural Gas Generator

Recently Updated
Call for price
500kW Natural Gas Caterpillar G398TA generator set open skid mounted with a Bemac II generator end 277/480V, 3 phase, 60Hz, 2998 hours, Serial Number: 73B919, Arrangement Number:...
ConditionUsed
Usage2,998 Hours
Engine ModelCaterpillar G398TA
Stock Number102403
MLS Number10887798
CategoryGenerator Sets
Last Updated2/25/2025
Location
Houston, TX, US
Sold By

Swift Equipment Solutions

2022 Volvo Penta Generator
10 0

2022 Volvo Penta Generator

Price Drop
$125,900 USD
2022 Volvo Penta Generator, No issues, 1025 Hours, 750 kVA/600 kW Rated 3 Phase Output, 480 V Rated Voltage, Stamford 600 kW Generator, US EPA Label, Volvo TWD 1643GE 6 Cylinder 16.1 L...
Quantity2
ConditionUsed
Usage1,025 Hours
MLS Number13146086
CategoryGenerator Sets
Last Updated2/24/2025
Location
Belleville, MI, US
Sold By

Construction Station LLC

Caterpillar 3412 Generator
4 0

1999 Caterpillar 3412 Generator

Newly Listed
$56,000 USD
Auto Start, Base Tank, Battery Charger, Battery Set, Cat Brand Genset, Circuit Breaker, Control Panel, Enclosure Material - Steel, Engine Type - Diesel, Jacket Water Heater, Rating - Standby...
ConditionUsed
Usage657 Hours
MLS Number13414924
CategoryGenerator Sets
Last Updated2/24/2025
Location
Richwood, KY, US
Sold By

Ohio CAT

Multiquip DCA25SS Generator
9 0

2024 Multiquip DCA25SS Generator

Newly Listed
$35,000 USD
2024 MULTIQUIP GENERATOR, AS IS, AS EQUIPPED,
ConditionUsed
Usage124 Hours
Stock NumberX25G5076
MLS Number13414907
CategoryGenerator Sets
Last Updated2/24/2025
Location
Banner, WY, US
Sold By

Tractor & Equipment Co.

Caterpillar C15 Generator
2 0

2024 Caterpillar C15 Generator

Recently Updated
$137,500 USD
Auto Start, Base Type - Skid, Battery Set, Cat Brand Genset, Circuit Breaker - 3 Pole, Control Panel - EMCP 4.2, Engine Type - Diesel, Expansion Module, Frequency - 60 Hz, Generator,...
ConditionUsed
Usage1 Hours
MLS Number13387750
CategoryGenerator Sets
Last Updated2/24/2025
Location
Jacksonville, FL, US
Sold By

Ring Power Corporation

2016 Multiquip DCA125SSIU4F Towable Generator
36 0

2016 Multiquip DCA125SSIU4F Towable Generator

Recently Updated
At auction Feb. 26
Location: Spokane WA ***Rental Industry Consignment*** S/N: 5SLBG1525GL018999 Engine: Isuzu 4HK1 4cyl Diesel 100kW, 125kVA, 3-phase single phase, 60hz, 120/240/480 volts, pintle hitch,...
Lot Number21
ConditionUsed
Usage7,962 Hours
Engine ModelIsuzu 4HK1
Stock Number73252
MLS Number13402397
CategoryGenerator Sets
Last Updated2/24/2025
Location
Spokane, WA, US
Listed By

J Stout Auctions

Caterpillar XQ60 Generator
3 0

2024 Caterpillar XQ60 Generator

Recently Updated
$67,950 USD
Online Owner's Manual,
ConditionUsed
Usage1,010 Hours
Stock NumberEE19933
MLS Number13329445
CategoryGenerator Sets
Last Updated2/24/2025
Location
Tucson, AZ, US
Sold By

Empire Machinery

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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