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 1,934 results
1-25 of 1,934 results
Featured Item
CKG780TVM3 Generator
8 0

2023 CKG780TVM3 Generator

$240,000 USD
Auto Start, Battery Charger, Battery Disconnect Switch, Camlocks, Coolant Heater, Emissions Level, Engine Governor, Engine Type - Diesel, Fire Extinguisher, Frequency - 60 Hz, Fuel Tank Type...
ConditionUsed
Usage51 Hours
MLS Number13051633
CategoryGenerator Sets
Last Updated4/30/2025
Location
Redmond, OR, US
Sold By

Peterson Power Systems

Featured Item
Caterpillar XQ30 Generator
11 0

2015 Caterpillar XQ30 Generator

$17,000 USD
CATERPILLAR XQ30 GENERATOR, Horsepower 49.0 hp, Online Owner's Manual, TRAILER VIN #16MBB1311FG072685,
Inspection Report
ConditionUsed
Usage18,961 Hours
Stock NumberUE01350
MLS Number12165367
CategoryGenerator Sets
Last Updated4/30/2025
Location
San Leandro, CA, US
Sold By

Peterson 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 Updated4/30/2025
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

Featured Item
Caterpillar D100 Generator
7 0

2000 Caterpillar D100 Generator

$17,500 USD
Auto Start, Base Type - Skid, Cat Brand Genset, Circuit Breaker - 3 Pole, Control Panel, Engine Type - Diesel, Frequency - 60 Hz, Generator, Jacket Water Heater, No Enclosure, Rating -...
ConditionUsed
Usage738 Hours
MLS Number13427969
CategoryGenerator Sets
Last Updated4/30/2025
Location
Jacksonville, FL, US
Sold By

Ring Power Corporation

Featured Item
Caterpillar G3406TA Generator
1 0

2012 Caterpillar G3406TA Generator

$31,100 USD
Online Owner's Manual,
ConditionUsed
Usage9,985 Hours
Stock NumberRP11315
MLS Number10875205
CategoryGenerator Sets
Last Updated4/30/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

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 Updated4/30/2025
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 Updated4/30/2025
Location
San Leandro, CA, 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 Updated4/30/2025
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 Updated4/30/2025
Location
Miami, FL, US
Sold By

Pantropic Power

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 Updated4/30/2025
Location
Fort Myers, FL, US
Sold By

Pantropic Power

Featured Item
Caterpillar OC30 Generator
8 0

2015 Caterpillar OC30 Generator

$36,500 USD
Online Owner's Manual, TRAILER MOUNTED,
ConditionUsed
Usage1,955 Hours
Stock NumberEQ145158
MLS Number11235441
CategoryGenerator Sets
Last Updated4/30/2025
Location
Milford, MA, US
Sold By

Milton CAT 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 Updated4/30/2025
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 Updated4/30/2025
Location
San Diego, CA, US
Sold By

Hawthorne 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 Updated4/30/2025
Location
Knoxville, TN, US
Sold By

Stowers Power Systems

Cummins 350 KW Generator
13 0

Cummins 350 KW Generator

Newly Listed
$24,000 USD
Cummins 350 kw with low hours
ConditionUsed
Usage129 Hours
Engine ModelCummins nta855
MLS Number13584375
CategoryGenerator Sets
Last Updated5/16/2025
Location
Decatur, TX, US
Sold By

Industrial Diesel, Inc.

AKSA 25 KW Enclosed Generator
7 0

AKSA 25 KW Enclosed Generator

Newly Listed
$26,500 USD
New Aksa 25kw enclosed generator unit
ConditionNew
Engine ModelJohn Deere 4045
MLS Number13584343
CategoryGenerator Sets
Last Updated5/16/2025
Location
Decatur, TX, US
Sold By

Industrial Diesel, Inc.

AKSA 65 KW Generator
5 0

AKSA 65 KW Generator

Newly Listed
$33,500 USD
New Aksa genset rated at 65kw
ConditionNew
Engine ModelJohn Deere 4045
MLS Number13584332
CategoryGenerator Sets
Last Updated5/16/2025
Location
Decatur, TX, US
Sold By

Industrial Diesel, Inc.

AKSA 115 KW Generator
10 0

AKSA 115 KW Generator

Newly Listed
$37,000 USD
New Aska generator rated at 115kw
ConditionNew
Engine ModelJohn Deere 4045
MLS Number13584324
CategoryGenerator Sets
Last Updated5/16/2025
Location
Decatur, TX, US
Sold By

Industrial Diesel, Inc.

Cummins 350 KW Generator
13 0

Cummins 350 KW Generator

Newly Listed
$19,500 USD
Cummins 350kw 277/480, 600 amp breaker. Less than 500 hours since new. NO RADIATOR
ConditionUsed
Usage500 Hours
Engine ModelCummins nta855
MLS Number13584268
CategoryGenerator Sets
Last Updated5/16/2025
Location
Decatur, TX, US
Sold By

Industrial Diesel, Inc.

Caterpillar C18 Generator
7 0

2018 Caterpillar C18 Generator

Newly Listed
$260,000 USD
Online Owner's Manual,
ConditionUsed
Usage901 Hours
Stock Number24-085
MLS Number13584057
CategoryGenerator Sets
Last Updated5/16/2025
Location
Mesa, AZ, US
Sold By

Empire Machinery

Caterpillar 1750 KW Generator
11 1

Caterpillar 1750 KW Generator

Recently Updated
$77,500 USD
Caterpillar 3512 genset. Has been ran out (see attached video),
ConditionUsed
Usage960 Hours
Horse Power2520 HP
Engine ModelCaterpillar 3516
MLS Number13566631
CategoryGenerator Sets
Last Updated5/16/2025
Location
Decatur, TX, US
Sold By

Industrial Diesel, Inc.

1989 DMT 2000 Generator
11 0

1989 DMT 2000 Generator

Newly Listed
$17,000 USD
DMT Corporation DIesel Generator, Cummins NT-855 (1986), 390hp, 3/60/277/480v, 800 gallon fuel cell
ConditionUsed
Usage955 Hours
MLS Number13579243
CategoryGenerator Sets
Last Updated5/16/2025
Location
Dover, FL, US
Sold By

Private Party

Caterpillar D100 Generator
10 0

2010 Caterpillar D100 Generator

Recently Updated
$29,400 USD
100KW STANDBY @ 208V, 2010 CAT D100 PACKAGE, CAT C4.4 ENGINE, EMCP 3 CONTROL PANEL, FUEL TANK BASE, GENERATOR SET, LOW HOURS, MOUNTED BREAKER, Online Owner's Manual, TIER 3,
ConditionUsed
Usage234 Hours
Stock NumberYEU0006
MLS Number13509665
CategoryGenerator Sets
Last Updated5/16/2025
Location
Topeka, KS, US
Sold By

Foley Equipment

Onan Generator
14 0

2009 Onan Generator

Newly Listed
$22,500 USD
2009 Onan 125 KW Stationary Gen Set, Original application was city backup - ONLY 129 hrs. Engine: Cummins Model 6CT8.3-G2, turbocharged and diesel-fueled. Displacement: 504 cubic inches (8.3...
ConditionUsed
Usage125 Hours
Stock NumberTOT0y4ON577509
MLS Number13583796
CategoryGenerator Sets
Last Updated5/16/2025
Location
Beaver Dam, WI, US
Sold By

Proxy Equipment

Perkins 60 KW Diesel Generator
9 1

Perkins 60 KW Diesel Generator

Recently Updated
$9,975 USD
60KW Perkins 2442 Diesel Generator Set With Weather Enclosure On A Skid Base Fuel Tank, 208V, 60Hz, 3 Phase, 1800Rpm, 100Amp Breaker, Floor Ran Tested
ConditionUsed
Engine ModelPerkins 2442
Stock Number103564
MLS Number13204285
CategoryGenerator Sets
Last Updated5/16/2025
Location
Houston, TX, US
Sold By

Swift Equipment Solutions

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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