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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Industrial Equipment (1923)
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1-25 of 1,923 results
1-25 of 1,923 results
Featured Item
2005 Caterpillar XQ-600 600KW 3412 Generator
3 0

2005 Caterpillar XQ-600 600KW 3412 Generator

Recently Updated
$190,000 USD
LOAD TESTED AS WELL AS OIL AND COOLANT SAMPLES TAKEN BY CAT DEALER. RESULTS ARE AVAILABLE TO REVIEW. EXCELLENT CONDITION. CALL OR E-MAIL TO ARRANGE FOR INSPECTION. REASONABLE OFFERS WILL BE...
ConditionUsed
Usage6,455 Hours
MLS Number13366322
CategoryGenerator Sets
Last Updated5/19/2025
Location
Syracuse,
Sold By

Granite Mining LLC

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

Caterpillar XQ125 T4F Generator
3 0

2019 Caterpillar XQ125 T4F Generator

Recently Updated
$26,750 USD
110% Spill Containment, Battery Charger, Emissions Level - EPA - EPA TIER 4f, Engine Governor, Hitch, Trailer, Regulatory Marking, Spark Arresting Muffler, Trailer Mounted,
ConditionUsed
Usage8,452 Hours
Stock NumberRP14954
MLS Number13002042
CategoryGenerator Sets
Last Updated5/24/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ230KVA Generator
4 0

2023 Caterpillar XQ230KVA Generator

Recently Updated
$109,900 USD
(480/277 VOLT,, (ModbusTCP) and, (NON-ROAD), *CERTIFICATION AR, *CONNECTION GP, *END USE: EP RETAIL RENTAL, *ENGINE ARPRIME, *GENERAL AR, *GENERATOR ARPWR, *MODULE AR DEF, *MODULE AR EXH,...
ConditionUsed
Usage3,154 Hours
Stock NumberUEN233
MLS Number12656852
CategoryGenerator Sets
Last Updated5/24/2025
Location
Call Foley, MO, US
Sold By

Foley Equipment

Caterpillar XQ35KVA Generator
5 0

2020 Caterpillar XQ35KVA Generator

Recently Updated
$26,100 USD
3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB W/ CAMLOCK CONNT OPTION, 60 HZ 27 KW, 60HZ 480 VOLT (WYE), 80C TEMP RISE OVER 40C AMB, ALT SPACE HEATER, Base Type - Standard, BATTERY CHARGER UL10A...
ConditionUsed
Usage3,867 Hours
Stock NumberWEU0056
MLS Number12224697
CategoryGenerator Sets
Last Updated5/24/2025
Location
Call Foley, KS, US
Sold By

Foley Equipment

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
Usage2,020 Hours
Stock NumberVER009
MLS Number13332926
CategoryGenerator Sets
Last Updated5/24/2025
Location
Call Foley, KS, US
Sold By

Foley Equipment

Winpower 10/6 PT 2 Generator
1 0

Winpower 10/6 PT 2 Generator

Newly Listed
At auction Jun. 4
Winpower 10/6 PT 2 Generator. 10 KW. 40 Amps. (1) 230 Bolt Outlet. (2) 115 Volt Outlets. 540 PTO. Approximately 18" Wire Wheels. No Tires. SN: BB-780-27
ConditionUsed
Stock NumberLK0801
MLS Number13602465
CategoryGenerator Sets
Last Updated5/24/2025
Location
Oshkosh, NE, US
Listed By

BigIron Auctions

Coleman Powermate Contractor 5000 Portable Generator
1 0

Coleman Powermate Contractor 5000 Portable Generator

Newly Listed
At auction Jun. 4
Coleman Powermate Contractor 5000 Portable Generator. 10 Hp Briggs Stratton Pull Start Gas Engine. 5000 Rated Watts. 6250 Surge Watts. (1) 120 Volt Duplex Outlet. (1) 240 Volt Twistlock...
ConditionUsed
Stock NumberLN9883
MLS Number13602463
CategoryGenerator Sets
Last Updated5/24/2025
Location
Oshkosh, NE, US
Listed By

BigIron Auctions

Generac 3000 Watt Portable Generator
1 0

Generac 3000 Watt Portable Generator

Newly Listed
At auction Jun. 4
Generac 3000 Watt Portable Generator. Briggs Stratton Pull Start Gas Engine. 3000 Watts (3) 120 Volt Outlets. (1) 240 Volt Outlet
ConditionUsed
Stock NumberLN9882
MLS Number13602462
CategoryGenerator Sets
Last Updated5/24/2025
Location
Oshkosh, NE, US
Listed By

BigIron Auctions

WinPower 18/30 Generator
1 0

WinPower 18/30 Generator

Newly Listed
At auction May. 28
WinPower 18/30 Generator. 40 PTO Drive Line. 18KW-30KW. 2 Phase Or 3 Phase. NOTE: Tires Need Replaced
ConditionUsed
Stock NumberKH9700
MLS Number13602308
CategoryGenerator Sets
Last Updated5/24/2025
Location
Saint Francis, KS, US
Listed By

BigIron Auctions

Ingersoll-Rand 100 Pull Type Generator
1 0

Ingersoll-Rand 100 Pull Type Generator

Recently Updated
At auction May. 14
Ingersoll-Rand 100 Portable Air Compressor. 1.996 Hrs Showing. Single Axle. Deutz Diesel Engine. 31.5 HP. P175/80R13 Tires. NOTE: NO Battery. SN: 163417 U87136
ConditionUsed
Stock NumberKP8438
MLS Number13558046
CategoryGenerator Sets
Last Updated5/24/2025
Location
Colona, IL, US
Listed By

BigIron Auctions

2007 Kohler 80RE0ZJD Generator
64 0

2007 Kohler 80RE0ZJD Generator

Newly Listed
At auction Jun. 19
2007 Kohler 80RE0ZJD generator, Hours: 799 on meter, Serial: 2180496, Unit #: 21.600101, Engine, John Deere 4035HF285, Serial: PE4045L025391, Displacement: 4.5L, Cylinders: 4, Fuel type:...
ConditionUsed
Usage799 Hours
Stock NumberDV4067
MLS Number13602239
CategoryGenerator Sets
Last Updated5/24/2025
Location
Columbia, MO, US
Listed By

Purple Wave Auction

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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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