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 1,745 results
1-25 of 1,745 results
Featured Item
Cummins DQFAD Diesel Generator
10 1

2007 Cummins DQFAD Diesel Generator

Recently Updated
$399,900 USD
Used Cummins 1000 kW trailered / portable rental grade standby (900 kW prime) diesel generator set, model DQFAD, SN-C070042109. Cummins QST30-G5 NR2 engine rated 1490 HP at 1800 RPM,...
ConditionUsed
Horse Power1490 HP
Engine ModelCummins QST30-G5 NR2
Emission RatingUSA Tier 2
Rear AxleTandem Axle
Stock NumberCentral States #4538
MLS Number12998489
CategoryGenerator Sets
Last Updated8/13/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Multiquip DCA70SSIU Diesel Generator
12 1

2016 Multiquip DCA70SSIU Diesel Generator

Price Reduced
$29,900 USD
MQ Power Multquip Whisperwatt 62 kW standby (56 kW prime) rental grade diesel generator set, model DCA-70SSJU4i, SN-7306744. John Deere 4045HFG92 engine rated 107 HP at 1800 RPM,...
ConditionUsed
Usage6,593 Hours
Horse Power107 HP
Engine ModelJohn Deere 4045HFG92
Emission RatingUSA Tier 4 Final
Stock NumberCentral States #4174
MLS Number12657814
CategoryGenerator Sets
Last Updated8/8/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Caterpillar C4.4 Diesel Generator
11 0

2020 Caterpillar C4.4 Diesel Generator

$51,500 USD
Used Caterpillar XQ125 110 kW standby (100 kW prime) rental grade diesel generator, SN-CK500876. CAT C4.4 engine, SN-J9G01028, EPA Tier 4 Final emissions. 3/60/277/480V or 3/60/120/208V...
ConditionUsed
Usage5,320 Hours
Engine ModelCaterpillar C4.4
Emission RatingUSA Tier 4 Final
Rear AxleTandem Axle
Stock NumberCentral States #4530
MLS Number12978920
CategoryGenerator Sets
Last Updated8/5/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Caterpillar XQ 200 T4I Generator
15 0

2014 Caterpillar XQ 200 T4I Generator

$62,500 USD
110% SPILL CONTAINMENT, 3 WAY FUEL VALVE, 60 HZ, AUTO START, BATTERY DISCONNECT SWITCH, CAT BRAND GENSET, CATERPILLAR XQ200 GENERATOR, CONTINUOUS, DIESEL, DUAL WALL FUEL TANK, ENGINE...
Inspection Report
ConditionUsed
Usage7,157 Hours
Stock NumberUE01123
MLS Number11368648
CategoryGenerator Sets
Last Updated8/6/2024
Location
Eugene, OR, US
Sold By

Peterson Power Systems

Featured Item
Generator 20 KW 2013 Multiquip Single / 3 Ph 120 / 240 / 480V Trailer Mounted MQ
18 1

Generator 20 KW 2013 Multiquip Single / 3 Ph 120 / 240 / 480V Trailer Mounted MQ

$18,000 USD
Generator 20 KW 2013 Multiquip Single / 3 Ph 120 / 240 / 480V Trailer Mounted MQ EASY BUSINESS FINANCING AVAILABLE!* Please call Gary with any questions or to discuss any additional details...
ConditionUsed
Usage4,444 Hours
Stock NumberTC0423794123DS180
MLS Number12017068
CategoryGenerator Sets
Last Updated7/22/2024
Location
Orem, UT, US
Sold By

Global Remarketing

Featured Item
Caterpillar LC7024H Generator
7 0

2023 Caterpillar LC7024H Generator

$25,515.78 USD
CSA CERTIFICATION, PERMANENT MAGNET GENERATOR,
Inspection Report
ConditionUsed
Usage1 Hours
MLS Number12365776
CategoryGenerator Sets
Last Updated8/6/2024
Location
Brampton, ON, Canada
Sold By

Toromont Power Systems

Featured Item
Caterpillar XQ570 Diesel Generator
12 1

2021 Caterpillar XQ570 Diesel Generator

$269,900 USD
Used Caterpillar XQ570 500 kW standby (455 kW prime) rental grade diesel generator, SN-ME500429. CAT C18 engine rated 779 HP at 1800 RPM, SN-CM800662, EPA Tier 4 Final emissions. ...
ConditionUsed
Usage4,429 Hours
Horse Power779 HP
Engine ModelCaterpillar C18
Emission RatingUSA Tier 4 Final
Rear AxleTandem Axle
Stock NumberCentral States #4475
MLS Number12786355
CategoryGenerator Sets
Last Updated7/22/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Olympian G25UH1 Generator
11 0

1999 Olympian G25UH1 Generator

Call for price
ConditionUsed
Usage371 Hours
Stock NumberEU00141
MLS Number12740074
CategoryGenerator Sets
Last Updated8/6/2024
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

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 Updated8/6/2024
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 Updated8/6/2024
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar XQ2000 Mobile Power Module Generator Set
21 0

2001 Caterpillar XQ2000 Mobile Power Module Generator Set

$700,000 USD
Online Owner's Manual,
ConditionUsed
Usage7,770 Hours
Stock NumberEPU11168
MLS Number12098324
CategoryGenerator Sets
Last Updated8/7/2024
Location
Indianapolis, IN, US
Sold By

MacAllister Machinery

Featured Item
Caterpillar 3516 Generator
7 0

2023 Caterpillar 3516 Generator

$489,000 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 Updated8/6/2024
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar C 32 Generator
3 0

2023 Caterpillar C 32 Generator

$205,000 USD
Package Type Cat Standard Unit,
ConditionUsed
MLS Number12492517
CategoryGenerator Sets
Last Updated8/6/2024
Location
Fort Myers, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar XQ425 Generator
7 0

2019 Caterpillar XQ425 Generator

$175,000 USD
*CAPTIVE: 5194400C13PS118, *CERTIFICATION AR, *ELECTRIC DRIVE TRAILER, *END USE: EP RETAIL, *GENERAL AR, *GENERATOR AR POWER, *MODULE AR DEF, *MODULE AR EXH, *VOLTAGE INDICATOR 480V 60HZ,...
ConditionUsed
Usage8,266 Hours
Stock Number19-600
MLS Number10877231
CategoryGenerator Sets
Last Updated8/6/2024
Location
Henderson, NV, US
Sold By

Cashman Power Solutions

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 Updated6/12/2024
Location
San Leandro, CA, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar XQ350 Mobile Power Module Generator Set
8 0

2013 Caterpillar XQ350 Mobile Power Module Generator Set

$89,500 USD
Online Owner's Manual,
ConditionUsed
Usage13,810 Hours
Stock Number028452
MLS Number12271996
CategoryGenerator Sets
Last Updated8/6/2024
Location
San Diego, CA, US
Sold By

Hawthorne Power Systems

Featured Item
WANCO WSP25 TRAILERED Generator
5 0

2023 WANCO WSP25 TRAILERED Generator

$30,750 USD
110% SPILL CONTAINMENT, 60 HZ, CAMLOCKS, CONTINUOUS, DIESEL, FUEL TANK, MULTI-VOLTAGE, PRIME, TRAILER HITCH, TRAILER MOUNTED,
ConditionUsed
Stock NumberINV260
MLS Number11992266
CategoryGenerator Sets
Last Updated8/6/2024
Location
Jackson, MS, US
Sold By

Puckett Machinery

Featured Item
Multiquip DCA25 Generator
8 0

2017 Multiquip DCA25 Generator

$20,000 USD
60 HZ, AUTO START, DIESEL, GENERATORS, PRIME, STANDBY, TRAILER MOUNTED,
ConditionUsed
Usage15,596 Hours
Stock Number17-078
MLS Number10877052
CategoryGenerator Sets
Last Updated8/6/2024
Location
Henderson, NV, US
Sold By

Cashman Power Solutions

Featured Item
Caterpillar G045F3S Generator
14 0

2007 Caterpillar G045F3S Generator

$14,500 USD
60 HZ, AUTO START, GENERATOR, GENERATORS, NATURAL GAS, OLYMPIAN BRAND GENSET, Online Owner's Manual, SKID MOUNTED CAT/OLYMPIAN 2007, STANDBY,
Inspection Report
ConditionUsed
Usage181 Hours
Stock NumberUE01328
MLS Number11379916
CategoryGenerator Sets
Last Updated8/6/2024
Location
Eugene, OR, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar SR4B Generator
6 0

2001 Caterpillar SR4B Generator

$10,000 USD
Online Owner's Manual,
ConditionUsed
Stock NumberEPU10903
MLS Number10145186
CategoryGenerator Sets
Last Updated8/7/2024
Location
Indianapolis, IN, US
Sold By

MacAllister Machinery

2004 Katolight 1,250 kw Generator
13 0

2004 Katolight 1,250 kw Generator

Newly Listed
At auction Aug. 14
GovDeals is an Online Auction for Government Surplus – LOT#3934-27122, Auction Ends 8/19/2024. To see full details, additional photos and current bid, please use this...
ConditionUsed
Usage388 Hours
Stock Number2934-27122
MLS Number13048867
CategoryGenerator Sets
Last Updated8/14/2024
Location
Washington, DC, US
Listed By

GovDeals, Inc.

Cummins DSGAC Diesel Generator
12 1

2009 Cummins DSGAC Diesel Generator

Newly Listed
$39,900 USD
Used Cummins 150 kW standby (135 kW prime) diesel generator set model DSGAC, SN-F090011681. Cummins QSB7-G5 NR3 engine rated 250 HP at 1800 RPM, SN-736006042, EPA Tier 3 emissions....
ConditionUsed
Usage182 Hours
Horse Power250 HP
Engine ModelCummins QSB7-G5 NR3
Emission RatingUSA Tier 3
Stock NumberCentral States #4543
MLS Number13048570
CategoryGenerator Sets
Last Updated8/14/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Multiquip DCA25SS Generator
4 0

2023 Multiquip DCA25SS Generator

Recently Updated
$34,950 USD
ISUZU TIER 4F, TRAILER 25US, COUPLER 3 PINTLE, CAMLOCK 1 SET,
ConditionNew
Usage1 Hours
Stock NumberEE20533
MLS Number12981891
CategoryGenerator Sets
Last Updated8/14/2024
Location
PHOENIX, AZ, US
Sold By

Empire Power Systems

Multiquip DCA25SS Generator
4 0

2023 Multiquip DCA25SS Generator

Recently Updated
$34,950 USD
ISUZU TIER 4F, TRAILER 25US, COUPLER 3 PINTLE, CAMLOCK 1 SET,
ConditionNew
Usage9 Hours
Stock NumberEE20529
MLS Number12981890
CategoryGenerator Sets
Last Updated8/14/2024
Location
PHOENIX, AZ, US
Sold By

Empire Power Systems

Multiquip DCA70SS Generator
4 0

2023 Multiquip DCA70SS Generator

Recently Updated
$77,950 USD
JOHN DEERE TIER 4F, TRAILER ELECTRIC, COUPLER 3 PINTLE 25K, BATTERY CHARGE 6A NGA100, CAMLOCK DCA70 1 SET 45, POWER BALANCE KIT,
ConditionNew
Usage1 Hours
Stock NumberEE20519
MLS Number12981875
CategoryGenerator Sets
Last Updated8/14/2024
Location
PHOENIX, AZ, US
Sold By

Empire Power Systems

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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