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 1,810 results
1-25 of 1,810 results
Featured Item
Cummins DQGAB Diesel Generator
11 1

2011 Cummins DQGAB Diesel Generator

$359,900 USD
Used Cummins 1500 kW standby (1350 kW prime) diesel generator set model DQGAB, SN-G110233080. Cummins QSK50-G4 engine rated 2220 HP at 1800 RPM, SN-25366503, EPA Tier 2 emissions....
ConditionUsed
Usage770 Hours
Horse Power2220 HP
Engine ModelCummins QSK50-G4 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4600
MLS Number13318557
CategoryGenerator Sets
Last Updated4/7/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Cummins DFEK Diesel Generator
9 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-A250405984. Cummins QSX15-G9 engine rated 755 HP at 1800 RPM, SN-80691765, EPA Tier 2...
ConditionNew
Horse Power755 HP
Engine ModelCummins QSX15-G9 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4000
MLS Number13364573
CategoryGenerator Sets
Last Updated4/7/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Caterpillar D600GC Diesel Generator
11 0

2024 Caterpillar D600GC Diesel Generator

$169,500 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 Updated4/7/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Featured Item
Caterpillar 3412 Diesel Generator
11 1

1996 Caterpillar 3412 Diesel Generator

$69,900 USD
Used Caterpillar 600 kW standby (545 kW prime) diesel generator set. CAT 3412 engine rated 896 HP at 1800 RPM, SN-81Z19106. 3/60/277/480V, 12 lead reconnectable to other voltages. 1000 Amp...
ConditionUsed
Usage1,159 Hours
Horse Power896 HP
Engine ModelCaterpillar 3412
Stock NumberCentral States #4624
MLS Number13253361
CategoryGenerator Sets
Last Updated4/7/2025
Location
Waukesha, WI, US
Sold By

Central States Diesel Generators

Multiquip GENSET 70 Generator
8 0

2022 Multiquip GENSET 70 Generator

Recently Updated
$49,000 USD
ConditionUsed
Usage5,533 Hours
Stock NumberCRS22-170
MLS Number13155093
CategoryGenerator Sets
Last Updated4/30/2025
Location
Sacramento, CA, US
Sold By

Holt of California

Multiquip GENSET 45 Generator
5 0

2019 Multiquip GENSET 45 Generator

Recently Updated
$29,000 USD
ConditionUsed
Usage2,680 Hours
Stock NumberCRS19-795
MLS Number12281775
CategoryGenerator Sets
Last Updated4/30/2025
Location
Stockton, CA, US
Sold By

Holt of California

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 Updated4/30/2025
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 Updated4/30/2025
Location
St. Augustine, FL, US
Sold By

Ring Power Corporation

Winco 25PTO3 Generator
1 0

Winco 25PTO3 Generator

Newly Listed
At auction May. 13
Winco 25PTO3 Generator. 540 PTO
ConditionUsed
Stock NumberIL6408
MLS Number13546783
CategoryGenerator Sets
Last Updated4/30/2025
Location
Charter Oak, IA, US
Listed By

BigIron Auctions

2006 Multiquip DCA-45SSIUII 36 kW Towable Generator 45 kVA Diesel Genset bidadoo
12 0

2006 Multiquip DCA-45SSIUII 36 kW Towable Generator 45 kVA Diesel Genset bidadoo

Newly Listed
At auction Apr. 29
Features WhisperWatt Super Silent Series Trailer Mounted ...
ConditionUsed
MLS Number13546602
CategoryGenerator Sets
Last Updated4/30/2025
Location
Brighton, CO, US
Listed By

bidadoo Inc.

2020 Multiquip DCA-45SSIU4F 36kW Towable Generator Isuzu 45kVA Genset bidadoo
12 0

2020 Multiquip DCA-45SSIU4F 36kW Towable Generator Isuzu 45kVA Genset bidadoo

Newly Listed
At auction Apr. 29
Features Oil Pressure, Water Temp, Battery, Fuel, and RPM Gauges Hertz, Amperage, Voltage...
ConditionUsed
MLS Number13546520
CategoryGenerator Sets
Last Updated4/30/2025
Location
Boise, ID, US
Listed By

bidadoo Inc.

2018 Wacker Neuson G70 T/A Towable 58kW Generator Cummins GenSet Diesel bidadoo
12 0

2018 Wacker Neuson G70 T/A Towable 58kW Generator Cummins GenSet Diesel bidadoo

Newly Listed
At auction Apr. 29
Features Electric Start Trailer Mounted Adjustable...
ConditionUsed
MLS Number13546517
CategoryGenerator Sets
Last Updated4/30/2025
Location
New Iberia, LA, US
Listed By

bidadoo Inc.

Chicago Pneumatic CPPG6iW 6 kW Generator Inverter Gas 120/240 Volt bidadoo -New
6 0

Chicago Pneumatic CPPG6iW 6 kW Generator Inverter Gas 120/240 Volt bidadoo -New

Newly Listed
At auction Apr. 29
Features Industrial Design Made for Commercial, Industrial Applications ...
ConditionNew
MLS Number13546504
CategoryGenerator Sets
Last Updated4/30/2025
Location
Spartanburg, SC, US
Listed By

bidadoo Inc.

2002 Detroit Diesel 500 KW Generator
10 0

2002 Detroit Diesel 500 KW Generator

Newly Listed
At auction Apr. 29
GovDeals is an Online Auction – LOT#23288-555 Auction Ends 05/02/2025. To see full details, additional photos and current bid, please use this link-, https://govdeals.bid/4lT61MY, Only 298...
ConditionUsed
Usage298 Hours
Stock Number23288-555
MLS Number13545370
CategoryGenerator Sets
Last Updated4/29/2025
Location
Gilroy, CA, US
Listed By

GovDeals, Inc.

Caterpillar C15 Generator
5 0

2008 Caterpillar C15 Generator

Newly Listed
$94,000 USD
Online Owner's Manual,
ConditionUsed
Usage232 Hours
Stock NumberEE22359
MLS Number13544515
CategoryGenerator Sets
Last Updated4/29/2025
Location
Phoenix, AZ, US
Sold By

Empire Machinery

Caterpillar XQ 570 Generator
17 0

2023 Caterpillar XQ 570 Generator

Newly Listed
$245,000 USD
ConditionUsed
Usage1,240 Hours
Stock NumberEPU11422
MLS Number13544505
CategoryGenerator Sets
Last Updated4/29/2025
Location
Indianapolis, IN, US
Sold By

MacAllister Machinery

Caterpillar CAT 3516C Generator
15 0

2015 Caterpillar CAT 3516C Generator

Newly Listed
$697,950 USD
Online Owner's Manual,
ConditionUsed
Usage165 Hours
Stock NumberEE22303
MLS Number13544499
CategoryGenerator Sets
Last Updated4/29/2025
Location
Mesa, AZ, US
Sold By

Empire Machinery

Wacker Neuson G25 Diesel Generator
16 1

2018 Wacker Neuson G25 Diesel Generator

Price Drop
$9,500 USD
Power Up Anywhere with the Wacker Neuson Generator Model G25! 2018 / 9454 hrs Looking for a reliable, compact power source for your next project? The Wacker Neuson G25 delivers 25 kW max...
ConditionUsed
Usage9,454 Hours
MLS Number13226131
CategoryGenerator Sets
Last Updated4/29/2025
Location
LaBelle, FL, US
Sold By

Port City Machinery, LLC

Caterpillar XQ350 Mobile Power Module Generator Set
1 0

2013 Caterpillar XQ350 Mobile Power Module Generator Set

Recently Updated
$72,500 USD
ConditionUsed
Usage10,848 Hours
Stock NumberRP12539
MLS Number12590948
CategoryGenerator Sets
Last Updated4/29/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Multiquip DCA70SSJU Generator
4 0

2014 Multiquip DCA70SSJU Generator

Recently Updated
$26,500 USD
Call for rental/lease prices
TRAILER MOUNTED, AUX FUEL TANK, IT4 DEERE DIESEL ENGINE, 56KW, 70KVA FOB: FLEET MAINTAINED - RECORDS AVAILABLE ON REQUEST, PRICE DOES NOT INCLUDE SALES TAX HOUR METER READING MAY VARY DUE...
ConditionUsed
Usage5,006 Hours
Stock Number46-48182
MLS Number8538090
CategoryGenerator Sets
Last Updated4/30/2025
Location
Ketchikan, AK, US
Sold By

Tyler Rental Inc.

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 Updated4/29/2025
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 Updated4/29/2025
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 Updated4/29/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

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 Updated4/29/2025
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 Updated4/29/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

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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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