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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Generator Sets (1834)
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1-25 of 1,834 results
1-25 of 1,834 results
Featured Item
Caterpillar XQ30 Generator
11 0

2015 Caterpillar XQ30 Generator

Recently Updated
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CATERPILLAR XQ30 GENERATOR, Online Owner's Manual, TRAILER VIN #16MBB1311FG072685,
Inspection Report
ConditionUsed
Usage18,961 Hours
Stock NumberUE01350
MLS Number12165367
CategoryGenerator Sets
Last Updated11/4/2024
Location
San Leandro, CA, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar XQ-60 48KW Generator
7 0

2017 Caterpillar XQ-60 48KW Generator

Recently Updated
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Online Owner's Manual,
ConditionUsed
Usage6,111 Hours
Stock NumberEU00103
MLS Number12032041
CategoryGenerator Sets
Last Updated10/31/2024
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

Featured Item
Caterpillar XQ125KVA Generator
4 0

2020 Caterpillar XQ125KVA Generator

Price Drop
$38,000 USD
*CERTIFICATION AR, *END USE: EP RENTAL, *ENGINE ARPRIM, *GENERAL AR, *GENERATOR ARPWR, *HEATER GPGENERATOR, *OPTIONAL 208V 3PHASE NEMA REC, *OPTIONAL BATTERY CHARGER UL10A, *PERMANENT MAGNET...
ConditionUsed
Usage7,303 Hours
Stock NumberSEN272
MLS Number12769335
CategoryGenerator Sets
Last Updated11/2/2024
Location
Topeka Area, KS, US
Sold By

Foley Equipment

Featured Item
Caterpillar XQ1475G Mobile Generator
4 0

2012 Caterpillar XQ1475G Mobile Generator

Recently Updated
$795,000 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Cat Brand Genset, Engine Governor, Engine Type - Natural Gas, Frequency - 50 / 60 Hz, Generator, Online...
ConditionUsed
Usage28,596 Hours
Stock NumberRP15578
MLS Number13046385
CategoryGenerator Sets
Last Updated11/2/2024
Location
Midland, TX, US
Sold By

Warren Power Systems

Featured Item
2013 Wacker Neuson G-120 Generator
22 0

2013 Wacker Neuson G-120 Generator

$25,000 USD
2013 WACKER NEUSON G-120 PORTABLE GENERATOR 96 KW - 3 PHASE HUGE BUILT IN 220 GALLON FUEL TANK UNDER 4,000 ORIGINAL HOURS 150 HP JOHN DEERE 4.5 LITER POWER-TECH TURBO...
ConditionUsed
Usage3,800 Hours
Horse Power150 HP
Engine ModelJohn Deere 4.5 POWER-TECH
Emission RatingPRE-EMISSIONS
Weight8500
Stock NumberJOHN DEERE DIESEL
MLS Number13175558
CategoryGenerator Sets
Last Updated10/14/2024
Location
Pompano Beach, FL, US
Sold By

Pro Quip

Featured Item
2014 MMD Generator
7 0

2014 MMD Generator

$27,000 USD
ConditionUsed
MLS Number13165155
CategoryGenerator Sets
Last Updated10/8/2024
Location
San Luis, AZ, US
Sold By

Water on Wheels LLC

Featured Item
Caterpillar C4.4 Diesel Generator
11 1

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 Updated10/2/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Caterpillar XQ2000 Mobile Power Module Generator Set
8 0

2024 Caterpillar XQ2000 Mobile Power Module Generator Set

$998,000 USD
*3516B DITA MOBILE EQUIPMENT, *3516B POWER MODULE, *EMCP 4.4 CONTROLLER, 3 Way Fuel Valve, 40FT CONTAINER SOUND ATTENUATED, Auto Start, Camlocks, Earth Leakage Detection, Engine Governor,...
ConditionUsed
MLS Number13147223
CategoryGenerator Sets
Last Updated10/7/2024
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar XQ230 Diesel Generator
12 1

2019 Caterpillar XQ230 Diesel Generator

$109,900 USD
Used Caterpillar XQ230 200 kW standby (182 kW prime) rental grade diesel generator, SN-CK200192. CAT C7.1 engine rated 320 HP at 1800 RPM, SN-7L300467, EPA Tier 4 Final emissions....
ConditionUsed
Usage4,146 Hours
Horse Power320 HP
Engine ModelCaterpillar C7.1
Emission RatingUSA Tier 4 Final
Rear AxleTandem Axle
Stock NumberCentral States #4522
MLS Number12978894
CategoryGenerator Sets
Last Updated9/30/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Caterpillar XQ570 Diesel Generator
12 1

2021 Caterpillar XQ570 Diesel Generator

$249,900 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 Updated9/30/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator
14 0

2014 Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator

$165,500 USD
110% SPILL CONTAINMENT, 3 WAY FUEL VALVE, 60 HZ, AUTO START, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, CAT BRAND GENSET, CATERPILLAR XQ350 GENERATOR, CONTINUOUS, DIESEL, DUAL WALL FUEL...
Inspection Report
ConditionUsed
Usage5,945 Hours
Stock NumberUE01261
MLS Number11368660
CategoryGenerator Sets
Last Updated10/7/2024
Location
Eugene, OR, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar LC7024H Generator
7 0

2023 Caterpillar LC7024H Generator

$25,210.69 USD
CSA CERTIFICATION, PERMANENT MAGNET GENERATOR,
Inspection Report
ConditionUsed
Usage1 Hours
MLS Number12365776
CategoryGenerator Sets
Last Updated10/7/2024
Location
Brampton, ON, Canada
Sold By

Toromont Power Systems

Featured Item
Caterpillar XQ350 Mobile Power Module Generator Set
4 0

2013 Caterpillar XQ350 Mobile Power Module Generator Set

$156,000 USD
Auto Start, Battery Charger, Package Type Cat Standard Unit,
Inspection Report
ConditionUsed
Usage4,900 Hours
MLS Number12860675
CategoryGenerator Sets
Last Updated10/7/2024
Location
Miami, FL, US
Sold By

Pantropic Power

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 Updated10/7/2024
Location
Fort Myers, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar XQ425 Diesel Generator
8 0

2018 Caterpillar XQ425 Diesel Generator

$219,900 USD
Used Caterpillar XQ425 375 kW standby (340 kW prime) rental grade diesel generator, SN-X8H00137. CAT C13 engine rated 518 HP at 1800 RPM, SN-NF300186, EPA Tier 4 Final emissions. ...
ConditionUsed
Usage1,698 Hours
Horse Power518 HP
Engine ModelCaterpillar C13
Emission RatingUSA Tier 4 Final
Rear AxleTandem Axle
Stock NumberCentral States #4482
MLS Number12808267
CategoryGenerator Sets
Last Updated10/21/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Atlas Copco QAS150 Generator
5 0

2014 Atlas Copco QAS150 Generator

$52,000 USD
AUTO START, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, MULTI-VOLTAGE,
ConditionUsed
Usage2,656 Hours
Stock NumberEQ216865
MLS Number11773022
CategoryGenerator Sets
Last Updated10/7/2024
Location
Milford, MA, US
Sold By

Milton CAT Power Systems

Featured Item
Caterpillar OC30 Generator
8 0

2015 Caterpillar OC30 Generator

$36,500 USD
Online Owner's Manual, TRAILER MOUNTED,
ConditionUsed
Usage1,955 Hours
Stock NumberEQ145158
MLS Number11235441
CategoryGenerator Sets
Last Updated10/7/2024
Location
Milford, MA, US
Sold By

Milton CAT Power Systems

Featured Item
Olympian D200P1 Generator
8 0

1999 Olympian D200P1 Generator

Call for price
ConditionUsed
Usage423 Hours
Stock NumberEU00117
MLS Number12032116
CategoryGenerator Sets
Last Updated10/7/2024
Location
Knoxville, TN, US
Sold By

Stowers 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 Updated10/7/2024
Location
San Diego, CA, US
Sold By

Hawthorne Power Systems

Featured Item
Caterpillar XQ2000 Mobile Power Module Generator Set
1 0

2007 Caterpillar XQ2000 Mobile Power Module Generator Set

Call for price
Online Owner's Manual,
ConditionUsed
Usage300 Hours
MLS Number11835289
CategoryGenerator Sets
Last Updated10/7/2024
Location
Saint Augustine, FL, US
Sold By

Ring Power Corporation

Featured Item
2023 Isuzu 4JB1 Generator
1 0

2023 Isuzu 4JB1 Generator

Call for price
Isuzu 4JB1 Generator .Please call for more details.
Quantity3
ConditionNew
MLS Number12560513
CategoryGenerator Sets
Last Updated10/6/2024
Location
Eads, TN, US
Sold By

GXP Diesel

Cummins DSHAA Diesel Generator
11 0

2006 Cummins DSHAA Diesel Generator

Newly Listed
$29,900 USD
Used Cummins 150 kW standby (135 kW prime) diesel generator model DSHAA, SN-D060916181. Cummins QSL9-G2 engine rated 364 HP at 1800 RPM, SN-46580071, EPA Tier 3 emissions. 225 Amp...
ConditionUsed
Usage610 Hours
Horse Power364 HP
Engine ModelCummins QSL9-G2 NR3
Emission RatingUSA Tier 3
Stock NumberCentral States #4606
MLS Number13213206
CategoryGenerator Sets
Last Updated11/5/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Cummins 2000 KW Diesel Generator
6 0

2025 Cummins 2000 KW Diesel Generator

Recently Updated
$599,500 USD
*****ETA Jan 30, 2025*****New Cummins 2000 kW standby (1825 kW prime) diesel generator set model C2000D6E. Cummins QSK50-G24 NR2 engine rated 2956 HP at 1800 RPM, EPA Tier 2 emissions....
ConditionNew
Horse Power2956 HP
Engine ModelCummins QSK50-G24 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4552
MLS Number13194307
CategoryGenerator Sets
Last Updated11/5/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Cummins 400 KW Generator
4 0

2007 Cummins 400 KW Generator

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54 Hours, Fuel Type: Diesel, Capacity: 400
ConditionUsed
Usage54 Hours
Engine ModelCummins QSK15-G9
Stock Number90365
MLS Number12617292
CategoryGenerator Sets
Last Updated11/5/2024
Location
Jacksonville, FL, US
Sold By

Generator Source

Generac 500 KW Generator
4 0

2010 Generac 500 KW Generator

Recently Updated
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511 Hours, Fuel Type: Diesel, Capacity: 500
ConditionUsed
Usage511 Hours
Engine ModelP180FE
Stock Number89854
MLS Number12478263
CategoryGenerator Sets
Last Updated11/5/2024
Location
Jacksonville, FL, US
Sold By

Generator Source

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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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