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 1,834 results
1-25 of 1,834 results
Featured Item
Caterpillar XQ350 Mobile Power Module Generator Set
5 0

2013 Caterpillar XQ350 Mobile Power Module Generator Set

Call for price
Online Owner's Manual,
ConditionUsed
Usage11,078 Hours
Stock NumberRP12547
MLS Number12624121
CategoryGenerator Sets
Last Updated9/21/2024
Location
Midland, TX, US
Sold By

Warren Power Systems

Featured Item
Caterpillar XQ350 Mobile Power Module Generator Set
4 0

2013 Caterpillar XQ350 Mobile Power Module Generator Set

$90,000 USD
ConditionUsed
Usage12,091 Hours
Stock NumberRP12543
MLS Number12624109
CategoryGenerator Sets
Last Updated9/19/2024
Location
Amarillo, TX, US
Sold By

Warren Power Systems

Featured Item
Caterpillar C32 Generator
7 0

2006 Caterpillar C32 Generator

$595,000 USD
Auto Start, Battery Charger, Battery Disconnect Switch, Coolant Heater, Engine Governor, Engine Type - Diesel, Fire Extinguisher, Frequency - 60 Hz, Fuel Tank Type - Single Wall, Generator,...
ConditionUsed
Usage1,740 Hours
Stock NumberUE2286
MLS Number12704038
CategoryGenerator Sets
Last Updated9/10/2024
Location
Albuquerque, NM, US
Sold By

Wagner Equipment Co.

Featured Item
Caterpillar 3516C-HD Generator
18 0

2010 Caterpillar 3516C-HD Generator

$425,000 USD
60 HZ, AUTO START, CAT BRAND GENSET, DIESEL, GENERATORS, Package Type Cat Standard Unit, PRIME, Rebuild Dealer Rebuild Overhaul Completed by North American CAT Dealer - Paperwork Available...
ConditionUsed
Usage3 Hours
Stock NumberUE05102
MLS Number11383747
CategoryGenerator Sets
Last Updated9/9/2024
Location
Midland, TX, US
Sold By

Warren Power Systems

Featured Item
Caterpillar XQ0350 Generator
8 0

2014 Caterpillar XQ0350 Generator

$165,500 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
Usage5,491 Hours
Stock NumberUE01157
MLS Number11077982
CategoryGenerator Sets
Last Updated9/9/2024
Location
Eugene, OR, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar 3516 DITA Generator
17 0

1999 Caterpillar 3516 DITA Generator

Call for price
3 POLE CIRCUIT BREAKER, 60 HZ, AUTO START, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, CAT BRAND GENSET, COOLANT HEATER, DIESEL, FUEL TANK, Package Type Dealer Packaged Unit,
ConditionUsed
Usage310 Hours
Stock NumberE220008S
MLS Number12175244
CategoryGenerator Sets
Last Updated9/9/2024
Location
Brampton, ON, Canada
Sold By

Toromont Power Systems

Featured Item
Olympian G25UH1 Generator
11 0

1999 Olympian G25UH1 Generator

Call for price
ConditionUsed
Usage371 Hours
Stock NumberEU00141
MLS Number12740074
CategoryGenerator Sets
Last Updated9/9/2024
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

Featured Item
Olympian CAT G25LTA2 Generator
10 0

2016 Olympian CAT G25LTA2 Generator

$7,500 USD
ConditionUsed
Stock NumberP160065A
MLS Number9814029
CategoryGenerator Sets
Last Updated9/9/2024
Location
San Diego, CA, US
Sold By

Hawthorne Power Systems

Featured Item
Caterpillar XQ1475G Mobile Generator
6 0

2014 Caterpillar XQ1475G Mobile Generator

$887,377.06 USD
(480V), 60 HZ, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, CAT BRAND GENSET, JW HEATER, NATURAL GAS, Online Owner's Manual, TRAILER MOUNTED, TRANSPORTABILITY,
ConditionUsed
Usage12,160 Hours
MLS Number11822765
CategoryGenerator Sets
Last Updated9/9/2024
Location
Calgary, AB, Canada
Sold By

Finning Canada

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 Updated9/9/2024
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 Updated9/9/2024
Location
Miami, FL, US
Sold By

Pantropic Power

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 Updated9/9/2024
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar 3456 Generator
6 0

2007 Caterpillar 3456 Generator

$165,000 USD
Auto Start, Package Type Cat Standard Unit,
ConditionUsed
Usage1,200 Hours
MLS Number12482842
CategoryGenerator Sets
Last Updated9/9/2024
Location
Fort Myers, FL, US
Sold By

Pantropic Power

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 Updated9/9/2024
Location
San Leandro, CA, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar XQ200 Generator
4 0

2014 Caterpillar XQ200 Generator

$82,500 USD
Online Owner's Manual,
ConditionUsed
Usage7,540 Hours
Stock Number028220
MLS Number12272001
CategoryGenerator Sets
Last Updated9/9/2024
Location
San Diego, CA, US
Sold By

Hawthorne Power Systems

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 Updated9/9/2024
Location
Eugene, OR, US
Sold By

Peterson Power Systems

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 Updated9/9/2024
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

Featured Item
Cummins KT19 500KW GeneratorSet
27 0

Cummins KT19 500KW GeneratorSet

$78,500 USD
Complete Ready to go!, Cummins Genset, Gen Set w/switch Gear, Min Circuit Breaker Panel, bulk oil tanks, baskets under trailer,, Rectifier for 110 Volt in 531 Tandem axle Fruehauf Van...
ConditionUsed
Usage12,365 Hours
MLS Number11862078
CategoryGenerator Sets
Last Updated8/28/2024
Location
Middleton, WI, US
Sold By

NORTHWESTERN STONE LLC

Caterpillar XQ1500 Generator
1 0

2001 Caterpillar XQ1500 Generator

Recently Updated
$575,000 USD
2001 CAT XQ1500 PORTABLE, 40FT CONTAINER ON TRI AXLE, CAT 3512B ENGINE, GENERATOR SET, Online Owner's Manual, TRAILER, UPGRADED CONTROLS, ZERO HOUR REFURB,
ConditionUsed
Usage1 Hours
Stock NumberXEU0039
MLS Number13109713
CategoryGenerator Sets
Last Updated9/29/2024
Location
Topeka, KS, US
Sold By

Foley Equipment

Cummins 35GGFB Natural Gas Generator
9 0

1997 Cummins 35GGFB Natural Gas Generator

Newly Listed
$7,950 USD
Used Cummins 35 kW standby (30 kW prime) natural gas / propane generator set, model GGFB, SN-J970652080. Ford CSG-649I-6005-A engine rated 83 HP at 1800 RPM, SN-16332. 1/60/120/240V single...
ConditionUsed
Usage361 Hours
Horse Power83 HP
Engine ModelFord ESG-642I-6005-A
Stock NumberCentral States #4559
MLS Number13143538
CategoryGenerator Sets
Last Updated9/29/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Caterpillar G80F3 Natural Gas Generator
12 0

2006 Caterpillar G80F3 Natural Gas Generator

Newly Listed
$15,900 USD
Used Caterpillar / Olympian 75 kW standby (63 kW prime) natural gas / propane generator set, model G80F3, SN-NFC02467. Ford WSG-1068 engine rated 112 HP at 1800 RPM, SN-06ZS51831. 3/60/120...
ConditionUsed
Usage803 Hours
Horse Power112 HP
Engine ModelFord WSG-1068 6.8L
Stock NumberCentral States #4562
MLS Number13143537
CategoryGenerator Sets
Last Updated9/29/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Generac SD080 Diesel Generator
12 0

1999 Generac SD080 Diesel Generator

Newly Listed
$12,900 USD
Used Generac 80 kW standby (72 kW prime) diesel generator set model SD0800, SN-2052824. Generac 5.0L engine rated 131 HP at 1800 RPM, SN-92460. 3/60/120/208V, 12 lead reconnectable to...
ConditionUsed
Usage212 Hours
Horse Power131 HP
Engine Model5.0L
Stock NumberCentral States #4550
MLS Number13143536
CategoryGenerator Sets
Last Updated9/29/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Kohler 90REOZT4 Diesel Generator
11 0

2020 Kohler 90REOZT4 Diesel Generator

Newly Listed
$39,900 USD
Used Kohler 85 kW standby (76 kW prime) rental grade diesel generator, 90REOZT4 SN-33KCGMHL0001. John Deere 4045HFG04 engine rated 133 HP at 1800 RPM, SN-, EPA Tier 4 Final emissions....
ConditionUsed
Usage1,483 Hours
Horse Power133 HP
Engine ModelJohn Deere 4045HFG04
Emission RatingUSA Tier 4
Stock NumberCentral States #4547
MLS Number13143535
CategoryGenerator Sets
Last Updated9/29/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Cummins 100DGDB Diesel Generator
11 0

2002 Cummins 100DGDB Diesel Generator

Newly Listed
$19,900 USD
Used Cummins 100 kW standby (90 kW prime) diesel generator set model DGDB, SN-C040621798. Cummins 6BT5.9-G6 engine rated 170 HP at 1800 RPM, SN-46373829. 3/60/120/208V, 12 lead...
ConditionUsed
Usage560 Hours
Horse Power170 HP
Engine ModelCummins 6BT5.9-G6
MLS Number13143534
CategoryGenerator Sets
Last Updated9/29/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Cummins 100DGDB Diesel Generator
11 0

2002 Cummins 100DGDB Diesel Generator

Newly Listed
$19,900 USD
Used Cummins 100 kW standby (90 kW prime) diesel generator set model DGDB, SN-I020415531. Cummins 6BT5.9-G6 engine rated 170 HP at 1800 RPM, SN-46252041. 3/60/120/208V, 12 lead...
ConditionUsed
Usage265 Hours
Horse Power170 HP
Engine ModelCummins 6BT5.9-G6
Stock NumberCentral States #4568
MLS Number13143533
CategoryGenerator Sets
Last Updated9/29/2024
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

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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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