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 1,876 results
1-25 of 1,876 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

Perkins 1104 Generator
5 0

Perkins 1104 Generator

Recently Updated
$21,995 USD
60 KW diesel GENSET / -Perkins 1104d-44t Engine - Manufacturers engine warranty 2 yearsy / Marelli mxb-ma4 brushless generator 2 year warranty, -DeepSea as702 controller. New Surplus...
Quantity2
ConditionNew
Stock Number29845
MLS Number13353275
CategoryGenerator Sets
Last Updated7/6/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Yanmar 3TNV784F Generator
5 0

Yanmar 3TNV784F Generator

Recently Updated
$6,995 USD
NEW - 10KW GENSET EPA COMPLIANT / PORTABLE GENERATOR-USA-TM, WITH ONE YEAR + FACTORY WARRANTY INCLUDES FREE SHIPPING US48. 10 KW OPEN UNIT Yanmar 3TNM74F-Tier 4 Diesel / Mecc Alte...
ConditionNew
Stock Number30338
MLS Number13353263
CategoryGenerator Sets
Last Updated7/6/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Yanmar YDG3700 Generator
1 0

Yanmar YDG3700 Generator

Recently Updated
$4,695 USD
OEM / AIR-COOLED DIESEL DRIVEN 3.7KW GENSET WITH Electric and recoil start, 60 Hertz, Open frame type, TIER 4 FINAL SINGLE PHASE Contractor Grade. FREIGHT INCLUDED IN THE PRICE US 48...
ConditionNew
Stock Number31075
MLS Number13353210
CategoryGenerator Sets
Last Updated7/6/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Yanmar YDG5500 Generator
1 0

Yanmar YDG5500 Generator

Recently Updated
$5,195 USD
OEM / AIR-COOLED DIESEL DRIVEN 5.5 KW GENSET WITH Electric and recoil start, 60 Hertz, Open frame type 5.5KW, TIER 4 FINAL, SINGLE PHASE Contractor Grade. FREIGHT INCLUDED IN THE PRICE US...
Quantity2
ConditionNew
Stock Number31076
MLS Number13353209
CategoryGenerator Sets
Last Updated7/6/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Yanmar MP45 Generator
1 0

Yanmar MP45 Generator

Recently Updated
$24,995 USD
*****these gensets are still not in stock. 6-5-23 MAY BE IN NOV 2023*****PRICE SUBJECT TO CHANGE, OEM / MECHANICAL DIESEL DRIVEN 45KW GENSET, Enclosed / EPA COMPLIANT FOR 2020, TIER 3 ...
ConditionNew
Stock Number31079
MLS Number13353208
CategoryGenerator Sets
Last Updated7/6/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Yanmar MP 35 Generator
1 0

Yanmar MP 35 Generator

Recently Updated
$23,995 USD
*****these gensets are still not in stock. 6-5-23*****PRICE SUBJECT TO CHANGE, OEM / MECHANICAL DIESEL DRIVEN 35KW GENSET, Enclosed / EPA COMPLIANT FOR 2020, TIER 3 / WITH 50 GAL...
ConditionNew
Stock Number31080
MLS Number13353207
CategoryGenerator Sets
Last Updated7/6/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Yanmar MP22 Generator
2 0

Yanmar MP22 Generator

Recently Updated
$20,995 USD
*****these gensets are still not in stock. 6-5-23 MAY BE IN NOV 2023****PRICE SUBJECT TO CHANGE, OEM / MECHANICAL DIESEL DRIVEN 22KW GENSET, Enclosed / EPA COMPLIANT FOR 2020, TIER 3 /...
ConditionNew
Stock Number31081
MLS Number13353206
CategoryGenerator Sets
Last Updated7/6/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Yanmar MP18 Generator
1 0

Yanmar MP18 Generator

Recently Updated
$19,995 USD
*****these gensets are still not in stock. 6-5-23 MAY BE IN NOV 2023*****PRICE SUBJECT TO CHANGE, OEM / MECHANICAL DIESEL DRIVEN 18KW GENSET, Enclosed / EPA COMPLIANT FOR 2020, TIER 3...
ConditionNew
Stock Number31082
MLS Number13353205
CategoryGenerator Sets
Last Updated7/6/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Caterpillar 3512B Generator
2 0

2024 Caterpillar 3512B Generator

Recently Updated
$429,500 USD
Online Owner's Manual, Rebuild Cat Certified Rebuild,
ConditionUsed
MLS Number11640893
CategoryGenerator Sets
Last Updated7/6/2025
Location
St. Augustine, FL, US
Sold By

Ring Power Corporation

Caterpillar 3512B Generator
2 0

2024 Caterpillar 3512B Generator

Recently Updated
$429,500 USD
50 HZ, AUTO START, EMCP 4.2B CONTROL PANEL, GENERATORS, JACKET WATER HEATER, NO ENCLOSURE, Online Owner's Manual, Rebuild Cat Certified Rebuild, STANDBY,
ConditionUsed
MLS Number11640891
CategoryGenerator Sets
Last Updated7/6/2025
Location
St. Augustine, FL, US
Sold By

Ring Power Corporation

Caterpillar 3516 Generator
6 0

2019 Caterpillar 3516 Generator

Recently Updated
$447,638.12 USD
Online Owner's Manual,
ConditionUsed
Usage10 Hours
Stock Number000000000010436095
MLS Number13100809
CategoryGenerator Sets
Last Updated7/6/2025
Location
Madrid, Spain
Sold By

Barloworld Finanzauto

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 Updated7/6/2025
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 Updated7/6/2025
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 Updated7/6/2025
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 Updated7/6/2025
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

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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