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 1,808 results
1-25 of 1,808 results
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 Updated12/18/2024
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 Updated12/18/2024
Location
San Leandro, CA, US
Sold By

Peterson 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 Updated12/18/2024
Location
Eugene, OR, 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 Updated12/18/2024
Location
Miami, FL, US
Sold By

Pantropic Power

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 Updated12/18/2024
Location
Miami, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar G55LTA2 Generator
5 0

2010 Caterpillar G55LTA2 Generator

$3,500 USD
ConditionUsed
Stock NumberEQ084412
MLS Number12641751
CategoryGenerator Sets
Last Updated12/18/2024
Location
Milford, MA, US
Sold By

Milton CAT Power Systems

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
Olympian CAT G25LTA2 Generator
10 0

2016 Olympian CAT G25LTA2 Generator

$7,500 USD
ConditionUsed
Stock NumberP160065A
MLS Number9814029
CategoryGenerator Sets
Last Updated12/18/2024
Location
San Diego, CA, US
Sold By

Hawthorne Power Systems

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 Updated12/18/2024
Location
Fort Myers, FL, US
Sold By

Pantropic Power

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 Updated12/18/2024
Location
Milford, MA, US
Sold By

Milton CAT 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 Updated12/18/2024
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 Updated12/18/2024
Location
Miami, FL, US
Sold By

Pantropic Power

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 Updated12/18/2024
Location
San Diego, CA, US
Sold By

Hawthorne 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 Updated12/18/2024
Location
San Diego, CA, US
Sold By

Hawthorne Power Systems

Featured Item
Caterpillar SR4HV Generator
6 0

1997 Caterpillar SR4HV Generator

$5,000 USD
Online Owner's Manual,
ConditionUsed
Stock NumberEPU11019
MLS Number12125839
CategoryGenerator Sets
Last Updated12/18/2024
Location
Indianapolis, IN, US
Sold By

MacAllister Machinery

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 Updated12/18/2024
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 Updated12/18/2024
Location
Middleton, WI, US
Sold By

NORTHWESTERN STONE LLC

Pramac S5500 Diesel Generator (Used)
7 0

Pramac S5500 Diesel Generator (Used)

Newly Listed
At auction Jan. 9
Pramac S5500 Diesel Generator (Used) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Jurupa Valley, CA. For more information removal arrangements please...
ConditionUsed
MLS Number13301030
CategoryGenerator Sets
Last Updated12/25/2024
Location
Jurupa Valley, CA, US
Listed By

JJ Kane Auctions

Generator (Used
7 0

Generator (Used

Newly Listed
At auction Jan. 9
Generator (Used, Broken Wheel) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Jurupa Valley, CA. For more information removal arrangements please contact...
ConditionUsed
MLS Number13301016
CategoryGenerator Sets
Last Updated12/25/2024
Location
Jurupa Valley, CA, US
Listed By

JJ Kane Auctions

Pramac S5500 Portable Generator
6 0

Pramac S5500 Portable Generator

Newly Listed
At auction Jan. 8
Pramac S5500 Portable Generator, Yanmar diesel (Runs) (Reads 247 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Waxahachie, TX. For pre-sale...
ConditionUsed
Usage247 Hours
Stock NumberWT933
MLS Number13300966
CategoryGenerator Sets
Last Updated12/25/2024
Location
Waxahachie, TX, US
Listed By

JJ Kane Auctions

Pramac S5500 Portable Generator
6 0

Pramac S5500 Portable Generator

Newly Listed
At auction Jan. 8
Pramac S5500 Portable Generator, Yanmar diesel (Runs) (Reads 488 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Waxahachie, TX. For pre-sale...
ConditionUsed
Usage488 Hours
Stock NumberWT932
MLS Number13300965
CategoryGenerator Sets
Last Updated12/25/2024
Location
Waxahachie, TX, US
Listed By

JJ Kane Auctions

Pramac S5500 Portable Generator
5 0

Pramac S5500 Portable Generator

Newly Listed
At auction Jan. 8
Pramac S5500 Portable Generator, Yanmar diesel (Not Running, Condition Unknown, Hours Unknown) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Waxahachie, TX...
ConditionUsed
Stock NumberWT931
MLS Number13300964
CategoryGenerator Sets
Last Updated12/25/2024
Location
Waxahachie, TX, US
Listed By

JJ Kane Auctions

Pramac S5500 Portable Generator
5 0

Pramac S5500 Portable Generator

Newly Listed
At auction Jan. 8
Pramac S5500 Portable Generator, Yanmar diesel (Not Running, Condition Unknown, Hours Unknown) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Waxahachie, TX...
ConditionUsed
Stock NumberWT930
MLS Number13300963
CategoryGenerator Sets
Last Updated12/25/2024
Location
Waxahachie, TX, US
Listed By

JJ Kane Auctions

Pramac S5500 Portable Generator
7 0

Pramac S5500 Portable Generator

Newly Listed
At auction Jan. 8
Pramac S5500 Portable Generator, Yanmar diesel (Runs) (Reads 305 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Waxahachie, TX. For pre-sale...
ConditionUsed
Usage305 Hours
Stock NumberWT929
MLS Number13300962
CategoryGenerator Sets
Last Updated12/25/2024
Location
Waxahachie, TX, US
Listed By

JJ Kane Auctions

2006 Generac Model 6572600100 Generator
17 0

2006 Generac Model 6572600100 Generator

Newly Listed
At auction Jan. 8
2006 Generac Model 6572600100 Generator, Hyundai 4-cyl Gas Engine, 20kW/20kVA, 120/240V, Single Phase, 1800 RPM, 461 Hours, SN: 2088592, Skid Mounted Cooperative Owned (Condition Unknown)...
ConditionUsed
Stock Number79794
MLS Number13300956
CategoryGenerator Sets
Last Updated12/25/2024
Location
Tahoka, TX, US
Listed By

JJ Kane Auctions

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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