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 1,933 results
1-25 of 1,933 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

Multiquip MQ180 T4F Generator
1 0

2018 Multiquip MQ180 T4F Generator

Recently Updated
$52,500 USD
ConditionUsed
Usage8,665 Hours
Stock NumberRP14380
MLS Number12628396
CategoryGenerator Sets
Last Updated5/20/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ350 Mobile Power Module Generator Set
5 0

2013 Caterpillar XQ350 Mobile Power Module Generator Set

Recently Updated
$60,000 USD
ConditionUsed
Usage11,035 Hours
Stock NumberRP12546
MLS Number12624110
CategoryGenerator Sets
Last Updated5/20/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar 3516 Generator
9 0

2006 Caterpillar 3516 Generator

Recently Updated
$263,217.22 USD
Online Owner's Manual,
ConditionUsed
Usage12,155 Hours
Stock Number000000000010465707
MLS Number12860238
CategoryGenerator Sets
Last Updated5/20/2025
Location
Madrid, Spain
Sold By

Barloworld Finanzauto

Melton Industries 15KW Open Frame Diesel Generator, Final Tier IV
2 0

Melton Industries 15KW Open Frame Diesel Generator, Final Tier IV

Price Drop
$14,995 USD
15KW / 15,000W Open Frame Diesel Generator – Final Tier IV Standard Base Unit: , 15KW or 15,000W , Single Phase Option – 125A @ 120VAC / 62A @ 240VAC , Three Phase Option...
Warranty
Quantity10
ConditionNew
Attachment MakeCattron
Horse Power25 HP
Engine Model3H50T
Emission RatingTier 4 Final
L x W46 x 25
Weight850
Stock NumberMSS15_3HMFT-1-1-1
MLS Number13573400
CategoryGenerator Sets
Last Updated5/19/2025
Location
Columbus, NJ, US
Sold By

Melton Industries

2006 Aggretech Marelli Deutz Diesel Generator Genset 3-Cylinder Diesel Air-Cooled Standby Generator
10 0

2006 Aggretech Marelli Deutz Diesel Generator Genset 3-Cylinder Diesel Air-Cooled Standby Generator

Recently Updated
$4,499.99 USD
(LIKE NEW) 2006 AGGRETECH MARELLI DEUTZ DIESEL GENERATOR SET, DEUTZ 3-CYLINDER, AIR-COOLED ENGINE, TYPE: F3M 2011, ESN: 10295406, 19.4KW @ 1500RPM, AGGRETECH GENERATOR, TYPE: D20SH, 20KW, SN...
ConditionUsed
Usage100 Hours
Engine ModelDeutz F3M2011
Capacity20 KW Diesel Generator
Stock Number218683
MLS Number10722026
CategoryGenerator Sets
Last Updated5/19/2025
Location
Rockwood, TN, US
Sold By

Machinery and Truck Parts

Doosan G25 Generator
11 0

2021 Doosan G25 Generator

Recently Updated
$21,500 USD
HR-13352021Doosan G253,455 hrs., 65 PSI, 2" Hitch, 275x75Rx15 $21,500.00, Tires, Doosan Eng
ConditionUsed
Usage3,455 Hours
Stock NumberHR-1335
MLS Number13448497
CategoryGenerator Sets
Last Updated5/19/2025
Location
Livingston, TX, US
Sold By

Hendrix Machinery LLC

Doosan G25WDO Generator
7 0

2021 Doosan G25WDO Generator

Recently Updated
$19,500 USD
HR-12622021Doosan G25WDMagnum, 4,177 hrs., 25 KVA, 65 PSI, 19-$19,500.00, 29 KVA Tier 4
ConditionUsed
Usage4,177 Hours
Stock NumberHR-1262
MLS Number13448496
CategoryGenerator Sets
Last Updated5/19/2025
Location
Livingston, TX, US
Sold By

Hendrix Machinery LLC

Multiquip GENSET 70 Generator
8 0

2022 Multiquip GENSET 70 Generator

Price Drop
$42,000 USD
ConditionUsed
Usage5,534 Hours
Stock NumberCRS22-170
MLS Number13155093
CategoryGenerator Sets
Last Updated5/19/2025
Location
Stockton, CA, US
Sold By

Holt of California

Caterpillar 3516 Generator
11 0

2006 Caterpillar 3516 Generator

Recently Updated
$313,380.68 USD
Online Owner's Manual,
ConditionUsed
Usage13,971 Hours
Stock Number000000000010465704
MLS Number12860240
CategoryGenerator Sets
Last Updated5/20/2025
Location
Madrid, Spain
Sold By

Barloworld Finanzauto

Caterpillar C18 Generator
3 0

2008 Caterpillar C18 Generator

Recently Updated
$119,995 USD
600KW- COMPLETE ModelSR4B, Serial9F603025, Hertz60HzWires6 WireKilo Watts, 600 kW, MountedSkid, AR#272-6915, TIER 3. WITH 100 DAY LIMITED PARTS WARRANTY,
ConditionNew
Stock Number69073
MLS Number13353024
CategoryGenerator Sets
Last Updated5/19/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

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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