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 1,878 results
1-25 of 1,878 results
Featured Item
Caterpillar C32 Diesel Generator
12 1

2021 Caterpillar C32 Diesel Generator

$299,500 USD
New Caterpillar 1000 kW standby (910 kW prime) diesel generator SN-JSJ04792. CAT C32 engine rated 1502 HP at 1800 RPM, SN-PRH08985, EPA Tier 2 emissions. 3/60/277/480V. 1600 Amp main-line...
ConditionNew
Usage3 Hours
Horse Power1502 HP
Engine ModelCaterpillar C32
Emission RatingUSA Tier 2
Stock NumberCentral States #4729
MLS Number13590715
CategoryGenerator Sets
Last Updated6/30/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Cummins DFEK Diesel Generator
10 0

2025 Cummins DFEK Diesel Generator

$119,900 USD
****Just In***** New Cummins 500 kW standby (455 kW prime) diesel generator set, model DFEK, SN-D250436352. Cummins QSX15-G9 engine rated 755 HP at 1800 RPM, SN-80703728, EPA Tier 2...
ConditionNew
Horse Power755 HP
Engine ModelCummins QSX15-G9 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4007
MLS Number13530462
CategoryGenerator Sets
Last Updated6/30/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
2016 ALLMAND MAX-POWER 65 KW TRAILER MOUNTED GENERATOR - 90 HP KUBOTA DIESEL - 3 PHASE - SERVICED, INSPECTED, LOAD TESTED
32 0

2016 ALLMAND MAX-POWER 65 KW TRAILER MOUNTED GENERATOR - 90 HP KUBOTA DIESEL - 3 PHASE - SERVICED, INSPECTED, LOAD TESTED

$12,500 USD
PRO-QUIPLLC.COM CALL 954-367-3867 2016 ALLMAND MAXI-POWER 65 KW GEN SET 3 PHASE (120 - 240 - 480) KUBOTA TURBO DIESEL HUGE 60 GALLON BUILT IN FUEL TANK UNIT WAS FULLY SERVICED AND LOAD...
ConditionUsed
Usage7,311 Hours
Horse Power90 HP
Engine ModelKubota
Capacity65KW
Weight6000
Stock NumberLOAD TESTED, INSPECTED, AND WORK READY
MLS Number13618590
CategoryGenerator Sets
Last Updated6/6/2025
Location
Pompano Beach, FL, US
Sold By

Pro Quip

Featured Item
Caterpillar D600GC Diesel Generator
11 0

2024 Caterpillar D600GC Diesel Generator

$159,500 USD
New Caterpillar 600 kW standby (545 kW prime) diesel generator D600GC, SN-R2N00322. CAT C18 engine rated 900 HP at 1800 RPM, SN-FST03455, EPA Tier 2 emissions. 3/60/277/480V. 1200 Amp and...
ConditionNew
Horse Power900 HP
Engine ModelCaterpillar C18
Emission RatingUSA Tier 2
Stock NumberCentral States #4631
MLS Number13252619
CategoryGenerator Sets
Last Updated6/30/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Caterpillar 3512C Diesel Generator
11 0

2009 Caterpillar 3512C Diesel Generator

$389,900 USD
Used Caterpillar 1500 kW standby (1360 kW prime) diesel generator set, SN-SBG00350. CAT 3512C engine rated 2206 HP at 1800 RPM, SN-EBG00281, EPA Tier 2 emissions. 3//60/277/480V. 3 x 1200...
ConditionUsed
Usage585 Hours
Horse Power2206 HP
Engine ModelCaterpillar 3512C
Emission RatingUSA Tier 2
Stock NumberCentral States #4720
MLS Number13558438
CategoryGenerator Sets
Last Updated6/30/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Caterpillar 3516C Diesel Generator
11 0

2008 Caterpillar 3516C Diesel Generator

$649,900 USD
Used Caterpillar 2000 kW standby (1825 kW prime) diesel generator set, SN-SBJ00543. CAT 3516C engine rated 2937 HP at 1800 RPM, SN-SBJ00543, EPA Tier 2 emissions. 3/60/277/480V. 3000 Amp...
ConditionUsed
Usage243 Hours
Horse Power2937 HP
Engine ModelCaterpillar 3516C
Emission RatingUSA Tier 2
Stock NumberCentral States #4696
MLS Number13558422
CategoryGenerator Sets
Last Updated6/30/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Caterpillar 3516 Generator
7 0

2006 Caterpillar 3516 Generator

Recently Updated
$327,482.62 USD
Online Owner's Manual,
ConditionUsed
Usage12,378 Hours
Stock Number000000000010465708
MLS Number12860236
CategoryGenerator Sets
Last Updated7/5/2025
Location
Madrid, Spain
Sold By

Barloworld Finanzauto

Caterpillar XQ125KVA Generator
4 0

2022 Caterpillar XQ125KVA Generator

Recently Updated
$61,900 USD
125C TEMP RISE OVER 40C AMB, 2022 CAT XQ125KVA, 3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB, 480V 60 HZ (XQ125), 60 HZ 100 KW, 60HZ 480 VOLT (WYE), Base Type - Standard, BATTERY CHARGER UL10A...
ConditionUsed
Usage2,095 Hours
Stock NumberVER009
MLS Number13332926
CategoryGenerator Sets
Last Updated7/5/2025
Location
Wichita, KS, US
Sold By

Foley Equipment

Caterpillar XQ60KVA Generator
4 0

2021 Caterpillar XQ60KVA Generator

Recently Updated
$22,800 USD
3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB, 60 HZ 48 KW, 60HZ 480 VOLT (WYE), 80C TEMP RISE OVER 40C AMB, ALT SPACE HEATER, Base Type - Standard, BATTERY CHARGER UL10A 120VAC, CAPTIVE: 4852409C3...
ConditionUsed
Usage7,627 Hours
Stock NumberVEU0012
MLS Number13128016
CategoryGenerator Sets
Last Updated7/5/2025
Location
Kansas City, MO, US
Sold By

Foley Equipment

Perkins DBP10000DC1 Generator
1 0

Perkins DBP10000DC1 Generator

Recently Updated
$10,649 USD
NEW - 10KW GENSET EPA COMPLIANT / PORTABLE GENERATOR-USA-TM, WITH ONE YEAR + FACTORY WARRANTY, INCLUDES FREE SHIPPING US48. 10 KW OPEN UNIT.
ConditionNew
Stock Number9450
MLS Number13354161
CategoryGenerator Sets
Last Updated7/4/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Perkins DBK8000D01 Generator
1 0

Perkins DBK8000D01 Generator

Recently Updated
$11,595 USD
NEW - 8KW- GENSET EPA COMPLIANT / PORTABLE GENERATOR-USA-TM, WITH ONE YEAR + FACTORY WARRANTY INCLUDES FREE SHIPPING US48. 8KW OPEN UNIT.
ConditionNew
Stock Number9451
MLS Number13354160
CategoryGenerator Sets
Last Updated7/4/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Perkins DBP10000D01 Generator
2 0

Perkins DBP10000D01 Generator

Recently Updated
$12,995 USD
ENCLOSED UNIT- NEW - 10KW GENSET - EPA COMPLIANT / PORTABLE GENERATOR-USA-TM, WITH ONE YEAR + FACTORY WARRANTY INCLUDES FREE SHIPPING US48. 10 KW ENCLOSED UNIT.
ConditionNew
Stock Number9452
MLS Number13354159
CategoryGenerator Sets
Last Updated7/4/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Caterpillar 3508 Generator
10 0

2005 Caterpillar 3508 Generator

Newly Listed
$169,000 USD
Online Owner's Manual,
ConditionUsed
Usage767 Hours
Stock NumberEE22425
MLS Number13685473
CategoryGenerator Sets
Last Updated7/4/2025
Location
Phoenix, AZ, US
Sold By

Empire Machinery

Caterpillar XQ800 Mobile Power Module Generator Set
4 0

2015 Caterpillar XQ800 Mobile Power Module Generator Set

Recently Updated
$548,100 USD
2015 CAT XQ800 T4I PORTABLE, 30FT CONTAINER, AIR RIDE CHASSIS, EMCP 4.4 CONTROLS, GENERATOR SET, Online Owner's Manual, T4I C27 ENGINE, WARRANTY OPTIONS AVAILABLE, ZERO CAT DEALER REBUILD,
ConditionUsed
Usage39,341 Hours
Stock NumberXEU0032
MLS Number13349764
CategoryGenerator Sets
Last Updated7/4/2025
Location
Topeka, KS, US
Sold By

Foley Equipment

Caterpillar XQ125KVA Generator
4 0

2023 Caterpillar XQ125KVA Generator

Recently Updated
$49,700 USD
*CERTIFICATION AR, *CONNECTION GP, *END USE: EP RETAIL RENTAL, *ENGINE ARPRIM, *GENERAL AR, *GENERATOR ARPWR, *HEATER GPGENERATOR, *HEATER GPJW, *OPTIONAL BATTERY CHARGER UL10A, *PERMANENT...
ConditionUsed
Usage4,440 Hours
Stock NumberUEN223
MLS Number13333028
CategoryGenerator Sets
Last Updated7/5/2025
Location
Call Foley, KS, US
Sold By

Foley Equipment

Caterpillar 3516 Generator
11 0

2006 Caterpillar 3516 Generator

Recently Updated
$327,482.62 USD
Online Owner's Manual,
ConditionUsed
Usage13,971 Hours
Stock Number000000000010465704
MLS Number12860240
CategoryGenerator Sets
Last Updated7/5/2025
Location
Madrid, Spain
Sold By

Barloworld Finanzauto

Caterpillar 3516 Generator
11 0

2006 Caterpillar 3516 Generator

Recently Updated
$327,482.62 USD
Online Owner's Manual,
ConditionUsed
Usage13,534 Hours
Stock Number000000000010465709
MLS Number12860237
CategoryGenerator Sets
Last Updated7/5/2025
Location
Madrid, Spain
Sold By

Barloworld Finanzauto

Multiquip DCA70SS Generator
4 0

2023 Multiquip DCA70SS Generator

Recently Updated
Call for price
BALL COUPLER 2 5/16 14K, BATT CHG 6A, DEERE TIER 4F ENV, KIT POWERBALANCE, TRAILER DCA70SSI ELEC, VIN# 5SLBG1329PL042127,
ConditionUsed
Usage4,216 Hours
Stock Number7307381
MLS Number12177391
CategoryGenerator Sets
Last Updated7/4/2025
Location
Cheyenne, WY, US
Sold By

Wyoming Machinery Company

Caterpillar XQ60KVA Generator
4 0

2022 Caterpillar XQ60KVA Generator

Recently Updated
$58,700 USD
3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB, 60 HZ 48 KW, 60HZ 480 VOLT (WYE), 80C TEMP RISE OVER 40C AMB, ALT SPACE HEATER, Base Type - Standard, BATTERY CHARGER UL10A 120VAC, CAPTIVE: 4852409C3...
ConditionUsed
Usage1,763 Hours
Stock NumberVEU0112
MLS Number12224654
CategoryGenerator Sets
Last Updated7/5/2025
Location
Call Foley, MO, US
Sold By

Foley Equipment

Caterpillar XQ125KVA Generator
4 0

2019 Caterpillar XQ125KVA Generator

Recently Updated
$76,000 USD
125C TEMP RISE OVER 40C AMB, 3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB, 480V 60 HZ (XQ125), 60 HZ 100 KW, 60HZ 480 VOLT (WYE), ALT SPACE HEATER, Base Type - Standard, BATTERY CHARGER UL10A...
ConditionUsed
Usage1,370 Hours
Stock NumberVER028
MLS Number13128021
CategoryGenerator Sets
Last Updated7/5/2025
Location
Kansas City, MO, US
Sold By

Foley Equipment

Caterpillar XQ125KVA Generator
4 0

2019 Caterpillar XQ125KVA Generator

Recently Updated
$52,300 USD
125C TEMP RISE OVER 40C AMB, 3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB, 480V 60 HZ (XQ125), 60 HZ 100 KW, 60HZ 480 VOLT (WYE), ALT SPACE HEATER, Base Type - Standard, BATTERY CHARGER UL10A...
ConditionUsed
Usage2,901 Hours
Stock NumberVER027
MLS Number13128020
CategoryGenerator Sets
Last Updated7/4/2025
Location
Call Foley, KS, US
Sold By

Foley Equipment

Caterpillar XQ60 Generator
4 0

2018 Caterpillar XQ60 Generator

Recently Updated
$23,900 USD
2 5/16" BALL HITCH, 208V 3 PHASE NEMA RECEPTABLES, 3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB, 480V 60 HZ (XQ60), 60 HZ 48 KW, 60HZ 480 VOLT (WYE), 80C TEMP RISE OVER 40C AMBIENT, ALT SPACE...
ConditionUsed
Usage7,414 Hours
Stock NumberVEU0033
MLS Number13196726
CategoryGenerator Sets
Last Updated7/5/2025
Location
Call Foley, MO, US
Sold By

Foley Equipment

Allmand MP25 Generator
4 0

2020 Allmand MP25 Generator

Recently Updated
$9,900 USD
.5% VOLTAGE REGULATION, 12V BATTERY, 2 - CS6369 (50A 3 PRONG LOCKING, 2 - NEMA 5-20R (20A GFI DUPLEX, 2 5/16" BALL HITCH, 22KW STANDBY 3 PH 25KVA 20KW, 52 GL FUEL TANK, 60A MAIN BREAKER,...
ConditionUsed
Usage8,925 Hours
Stock Number0AR6282
MLS Number12905601
CategoryGenerator Sets
Last Updated7/5/2025
Location
Call Foley, MO, US
Sold By

Foley Equipment

1985 Caterpillar SR4 Generator
1 0

1985 Caterpillar SR4 Generator

Newly Listed
At auction Jul. 16
1985 Caterpillar SR4 Generator. 10.486 Hrs Showing. 3304 Caterpillar. Diesel. Water Cooled Engine. 0 Fuel Tanks. Electric Start. On Skid. 240/480 Volts. 95 Kw. Note: No Fuel Tank. No...
ConditionUsed
Stock NumberKE8716
MLS Number13684395
CategoryGenerator Sets
Last Updated7/4/2025
Location
Dodge City, KS, US
Listed By

BigIron Auctions

1987 Cummins S125D18 Generator
1 0

1987 Cummins S125D18 Generator

Newly Listed
At auction Jul. 16
1987 Cummins S125D18 Generator. 724 Hrs Showing. 6cyl Cummins. Diesel. Water Cooled Engine. 0 Fuel Tanks. Electric Start. On Skid. 3 Phase. 120/208 Volts. 125Kw. SN: AD103748
ConditionUsed
Stock NumberKE8715
MLS Number13684394
CategoryGenerator Sets
Last Updated7/4/2025
Location
Dodge City, KS, US
Listed By

BigIron Auctions

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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.
Got a generator to sell? In minutes, you can create an online listing for your generator and advertise it to thousands of buyers.
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