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 1,878 results
1-25 of 1,878 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

Melton Industries 15KW Generator - Cattron
2 0

Melton Industries 15KW Generator - Cattron

Newly Listed
$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 Updated5/12/2025
Location
Columbus, NJ, US
Sold By

Melton Industries

35KW Open Frame Diesel Generator - New Custom Manufactured
2 0

35KW Open Frame Diesel Generator - New Custom Manufactured

Newly Listed
$19,750 USD
35KW / 35,000W Open Frame Diesel Generator – Final Tier IV Standard Base Unit: , 35KW or 35,000W , Single Phase Option – 292A @ 120VAC / 146A @ 240VAC , Three Phase Option –...
Warranty
Quantity10
ConditionNew
Horse Power74 HP
Engine Model4H50TIC
Emission RatingTier 4 Final
L x W58 x 27
Weight995
Stock NumberMSS35_4HMFT-1-1
MLS Number13573126
CategoryGenerator Sets
Last Updated5/12/2025
Location
Columbus, NJ, US
Sold By

Melton Industries

25KW Open Frame Diesel Generator - New Custom Manufactured
2 0

25KW Open Frame Diesel Generator - New Custom Manufactured

Recently Updated
$18,000 USD
25KW / 25,000W Open Frame Diesel Generator – Final Tier IV Standard Base Unit: , 25KW or 25,000W , Single Phase Option – 208A @ 120VAC / 104A @ 240VAC , Three Phase Option –...
Warranty
Quantity10
ConditionNew
Horse Power56 HP
Engine Model3H50TIC
Emission RatingTier 4 Final
L x W54 x 27
Weight975
Stock NumberMSS25_3HMFT
MLS Number11990310
CategoryGenerator Sets
Last Updated5/12/2025
Location
Columbus, NJ, US
Sold By

Melton Industries

20KW Open Frame Diesel Generator - New Custom Manufactured
2 0

20KW Open Frame Diesel Generator - New Custom Manufactured

Recently Updated
$18,600 USD
20KW / 20,000W Open Frame Diesel Generator – Final Tier IV Standard Base Unit: , 20KW or 20,000W , Single Phase Option – 167A @ 120VAC / 83A @ 240VAC , Three Phase Option –...
Warranty
Quantity10
ConditionNew
Horse Power56 HP
Engine Model3H50TIC
Emission RatingTier 4 Final
L x W52 x 27
Weight975
Stock NumberMSS20_3HMFT
MLS Number11990307
CategoryGenerator Sets
Last Updated5/12/2025
Location
Columbus, NJ, US
Sold By

Melton Industries

30KW Open Frame Diesel Generator - New Custom Manufactured
2 0

30KW Open Frame Diesel Generator - New Custom Manufactured

Recently Updated
$18,750 USD
30KW / 30,000W Open Frame Diesel Generator – Final Tier IV Standard Base Unit: , 30KW or 30,000W , Single Phase Option – 250A @ 120VAC / 125A @ 240VAC , Three Phase Option –...
Warranty
Quantity10
ConditionNew
Horse Power56 HP
Engine Model3H50TIC
Emission RatingTier 4 Final
L x W54.5 x 27
Weight975
Stock NumberMSS30_3HMFT
MLS Number11990300
CategoryGenerator Sets
Last Updated5/12/2025
Location
Columbus, NJ, US
Sold By

Melton Industries

2014 Stamford 350 KW Generator Set LOW HOURS
12 0

2014 Stamford 350 KW Generator Set LOW HOURS

Newly Listed
$28,500 USD
2014 Stamford HCI434E1L-00806 generator set, 350 KW constant duty rating, 60 Hz, 480V, 3 phase, 529 amp base rate, continuous duty, skid mounted, Mercedes OM502LA diesel engine, tier 4 final...
ConditionUsed
Stock Number17625
MLS Number13573089
CategoryGenerator Sets
Last Updated5/12/2025
Location
Carbondale, PA, US
Sold By

Old Forge Power Equipment, Inc

Caterpillar G3516SITA Natural Gas Generator
13 0

Caterpillar G3516SITA Natural Gas Generator

Recently Updated
$95,000 USD
CORE 800kW Caterpillar G3516SITA natural gas generator set, Packaged in 2004 by Enercon 1200rpm Engine Serial Number Prefix 3RC, KATO 820kW continuous duty Generator end 480V, 3phase, 60HZ,...
ConditionUsed
Engine ModelCaterpillar G3516SITA
Stock Number101379
MLS Number10305963
CategoryGenerator Sets
Last Updated5/12/2025
Location
Houston, TX, US
Sold By

Swift Equipment Solutions

Caterpillar 3516 Generator
11 0

2006 Caterpillar 3516 Generator

Recently Updated
$308,169.83 USD
Online Owner's Manual,
ConditionUsed
Usage13,971 Hours
Stock Number000000000010465704
MLS Number12860240
CategoryGenerator Sets
Last Updated5/12/2025
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 Updated5/11/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Caterpillar 3412 Generator
7 0

2001 Caterpillar 3412 Generator

Recently Updated
$132,995 USD
LIKE NEW ONLY 208 HOURS, CAT 750 COMPLETE Sound Enclosed with, Base Fuel Tank, with 100 day limited parts warranty Unit will be load tested before shipment.
ConditionUsed
Stock Number69145
MLS Number13353017
CategoryGenerator Sets
Last Updated5/11/2025
Location
Chicago, IL, US
Sold By

Diesel Sales

Cummins KTA38-G2 Generator
5 0

Cummins KTA38-G2 Generator

Recently Updated
$37,995 USD
LIKE NEW ONLY 250 HOURS ON EACH OF THESE TWO KTA3-G2 COMPLETE GENSETS. WITH WARRANTY. SELLING AS PACKAGE OF TWO AT $75,000.00 CALL OR SEND FOR DETAILS.
Quantity2
ConditionUsed
Stock Number69171
MLS Number13353015
CategoryGenerator Sets
Last Updated5/11/2025
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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