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 1,886 results
1-25 of 1,886 results
Featured Item
2005 Caterpillar XQ-600 600KW 3412 Generator
3 0

2005 Caterpillar XQ-600 600KW 3412 Generator

$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

Caterpillar XQ125 T4F Generator
1 0

2019 Caterpillar XQ125 T4F Generator

Recently Updated
$31,250 USD
ConditionUsed
Usage7,964 Hours
Stock NumberRP14961
MLS Number13002047
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ125 T4F Generator
5 0

2019 Caterpillar XQ125 T4F Generator

Recently Updated
$27,500 USD
ConditionUsed
Usage6,662 Hours
Stock NumberRP14959
MLS Number13004413
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ125 T4F Generator
2 0

2019 Caterpillar XQ125 T4F Generator

Recently Updated
$28,250 USD
110% Spill Containment, Battery Disconnect Switch, Camlocks, Cat Brand Genset, Emissions Level - EPA - EPA TIER 4f, Engine Governor, Generator, Hitch, Trailer, Regulatory Marking, Spark...
ConditionUsed
Usage7,083 Hours
Stock NumberRP14947
MLS Number13004411
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ125 T4F Generator
1 0

2019 Caterpillar XQ125 T4F Generator

Recently Updated
$30,000 USD
110% Spill Containment, Cat Brand Genset, Emissions Level - EPA - EPA TIER 4f, Engine Governor, Generator, Hitch, Trailer, Trailer Mounted,
ConditionUsed
Usage6,077 Hours
Stock NumberRP14948
MLS Number13002041
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ125 T4F Generator
5 0

2018 Caterpillar XQ125 T4F Generator

Recently Updated
$25,950 USD
ConditionUsed
Usage8,332 Hours
Stock NumberRP14021
MLS Number12965825
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ125 T4F Generator
5 0

2018 Caterpillar XQ125 T4F Generator

Recently Updated
$26,250 USD
ConditionUsed
Usage10,420 Hours
Stock NumberRP14012
MLS Number12965822
CategoryGenerator Sets
Last Updated6/2/2025
Location
Lubbock, TX, US
Sold By

Warren Power Systems

Caterpillar XQ125 T4F Generator
6 0

2018 Caterpillar XQ125 T4F Generator

Recently Updated
$25,000 USD
ConditionUsed
Usage9,396 Hours
Stock NumberRP14022
MLS Number12965820
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar 3516 B Generator
2 0

2024 Caterpillar 3516 B Generator

Recently Updated
$600,500 USD
Auto Start, Base Type - Skid, Cat Brand Genset, Control Panel - EMCP 4.2B, Engine Type - Diesel, Frequency - 50 / 60 Hz, Generator, Jacket Water Heater, Rating - Standby, Rebuild Cat...
ConditionUsed
MLS Number12943692
CategoryGenerator Sets
Last Updated6/2/2025
Location
Jacksonville, FL, US
Sold By

Ring Power Corporation

Caterpillar 3516 B Generator
2 0

2024 Caterpillar 3516 B Generator

Recently Updated
$600,500 USD
Auto Start, Base Type - Skid, Battery Set - Standard, Cat Brand Genset, Control Panel - EMCP 4.2B, Engine Type - Diesel, Frequency - 50 / 60 Hz, Generator, Rebuild Cat Certified Rebuild,
ConditionUsed
MLS Number12943691
CategoryGenerator Sets
Last Updated6/2/2025
Location
Jacksonville, FL, US
Sold By

Ring Power Corporation

Caterpillar 3516 B Generator
2 0

2024 Caterpillar 3516 B Generator

Recently Updated
$600,500 USD
Auto Start, Cat Brand Genset, Control Panel - EMCP 4.2B, Engine Type - Diesel, Frequency - 50 / 60 Hz, Generator, Jacket Water Heater, Rating - Standby, Rebuild Cat Certified Rebuild,
ConditionUsed
MLS Number12943679
CategoryGenerator Sets
Last Updated6/2/2025
Location
Jacksonville, FL, US
Sold By

Ring Power Corporation

Caterpillar 3516 B Generator
2 0

2024 Caterpillar 3516 B Generator

Recently Updated
$600,500 USD
Auto Start, Base Type - Skid, Cat Brand Genset, Control Panel - EMCP 4.2B, Engine Type - Diesel, Frequency - 50 / 60 Hz, Generator, Generator Space Heater, Jacket Water Heater, Rating -...
ConditionUsed
MLS Number12943678
CategoryGenerator Sets
Last Updated6/2/2025
Location
Jacksonville, FL, US
Sold By

Ring Power Corporation

Caterpillar 3516 B Generator
2 0

2025 Caterpillar 3516 B Generator

Recently Updated
$600,500 USD
Auto Start, Cat Brand Genset, Control Panel - EMCP 4.2B, Engine Type - Diesel, Frequency - 50 / 60 Hz, Generator, Rating - Standby, Rebuild Cat Certified Rebuild,
ConditionUsed
MLS Number12940924
CategoryGenerator Sets
Last Updated6/2/2025
Location
Jacksonville, FL, US
Sold By

Ring Power Corporation

Caterpillar 3516 B Generator
2 0

2025 Caterpillar 3516 B Generator

Recently Updated
$600,500 USD
Auto Start, Cat Brand Genset, Control Panel - EMCP 4.2B, Engine Type - Diesel, Frequency - 50 / 60 Hz, Generator, Jacket Water Heater, Rating - Standby, Rebuild Cat Certified Rebuild,
ConditionUsed
MLS Number12940922
CategoryGenerator Sets
Last Updated6/2/2025
Location
Jacksonville, FL, US
Sold By

Ring Power Corporation

Caterpillar XQ425 Generator
22 0

2018 Caterpillar XQ425 Generator

Recently Updated
$175,000 USD
Online Owner's Manual, Ultra Low Sulfur Diesel Fuel,
Inspection Report
ConditionUsed
Usage5,156 Hours
Stock NumberGS19-003
MLS Number13263770
CategoryGenerator Sets
Last Updated6/2/2025
Location
Charlotte, NC, US
Sold By

Carolina CAT

Multiquip MQ300 Generator
3 0

2012 Multiquip MQ300 Generator

Recently Updated
$68,500 USD
ConditionUsed
Usage4,173 Hours
Stock NumberRP15260
MLS Number12628503
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Multiquip MQ220 Generator
1 0

2011 Multiquip MQ220 Generator

Recently Updated
$52,000 USD
ConditionUsed
Usage10,968 Hours
Stock NumberRP14287
MLS Number12628393
CategoryGenerator Sets
Last Updated6/2/2025
Location
Tulsa, OK, US
Sold By

Warren Power Systems

Multiquip MQ220 Generator
6 0

2011 Multiquip MQ220 Generator

Recently Updated
$60,000 USD
ConditionUsed
Usage12,689 Hours
Stock NumberRP14283
MLS Number12628392
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Multiquip MQ180 T4F Generator
1 0

2018 Multiquip MQ180 T4F Generator

Recently Updated
$37,500 USD
ConditionUsed
Usage17,066 Hours
Stock NumberRP14378
MLS Number12628390
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ125 T4F Generator
7 0

2018 Caterpillar XQ125 T4F Generator

Recently Updated
$23,400 USD
ConditionUsed
Usage11,512 Hours
Stock NumberRP14011
MLS Number12628380
CategoryGenerator Sets
Last Updated6/2/2025
Location
Tulsa, OK, US
Sold By

Warren Power Systems

NorAm N150 Generator
7 0

2012 NorAm N150 Generator

Recently Updated
$27,700 USD
ConditionUsed
Usage4,276 Hours
Stock NumberRP12689
MLS Number12624116
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar WC215G Generator
2 0

2012 Caterpillar WC215G Generator

Recently Updated
$31,500 USD
ConditionUsed
Usage6,748 Hours
Stock NumberRP11801
MLS Number12624113
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ350 Mobile Power Module Generator Set
1 0

2013 Caterpillar XQ350 Mobile Power Module Generator Set

Recently Updated
$68,500 USD
Online Owner's Manual,
ConditionUsed
Usage7,772 Hours
Stock NumberRP12544
MLS Number12624112
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ350 Mobile Power Module Generator Set
4 0

2013 Caterpillar XQ350 Mobile Power Module Generator Set

Recently Updated
$57,500 USD
ConditionUsed
Usage12,142 Hours
Stock NumberRP12543
MLS Number12624109
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

Caterpillar XQ350 RF Generator
1 0

2012 Caterpillar XQ350 RF Generator

Recently Updated
$74,500 USD
ConditionUsed
Usage22,228 Hours
Stock NumberRP11971
MLS Number12624107
CategoryGenerator Sets
Last Updated6/2/2025
Location
Midland, TX, US
Sold By

Warren Power Systems

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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