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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Showing 1 - 25 of 1,927 Generator Listings

1 - 25 of 1,927 listings
1 - 25 of 1,927 listings
Featured Item
Caterpillar XQ2000 Mobile Power Module Generator Set
4 0

Caterpillar XQ2000 Mobile Power Module Generator Set

$589,500 USD
110% Spill Containment, 3 Way Fuel Valve, Auto Start, Battery Charger, Battery Disconnect Switch, Cat Brand Genset, Coolant Heater, Engine Governor, Engine Type - Diesel, Fire Extinguisher,...
ConditionUsed
Usage7,364 Hours
Stock NumberEU00170
MLS Number13627328
CategoryGenerator Sets
Last Updated9/15/2025
Location
Knoxville, TN, US
Sold By
Stowers Power Systems
Featured Item
Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator
8 0

2014 Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator

$110,000 USD
110% SPILL CONTAINMENT, 3 WAY FUEL VALVE, 60 HZ, AUTO START, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, CAT BRAND GENSET, CAT C13 ENGINE, CATERPILLAR XA350 TIER4I, CIRCUIT BREAKER, CEM,...
Inspection Report
ConditionUsed
Usage6,727 Hours
Stock NumberNR12802
MLS Number13305187
CategoryGenerator Sets
Last Updated9/15/2025
Location
Eugene, OR, US
Sold By
Peterson Power Systems
Ingersoll-Rand G25 Generator
15 0

2008 Ingersoll-Rand G25 Generator

Recently Updated
At auction Oct. 16
2008 Doosan/Ingersoll Rand G25 Enclosed Portable Generator, s/n 4FVGCBAA38U397669, 4-cyl, diesel, with pintle hitch, (Application for Special Equipment) Not Running, Operation Unknown)...
ConditionUsed
Usage920 Hours
Stock NumberK0309
MLS Number13846521
CategoryGenerator Sets
Last Updated10/8/2025
Location
Jurupa Valley, CA, US
Listed By
JJ Kane Auctions
Multiquip MQP150IV Generator
21 0

2009 Multiquip MQP150IV Generator

Recently Updated
At auction Oct. 16
2009 Multi-Quip MQP150IV Enclosed Portable Generator, s/n 42389, 6.7L diesel, with 135 kw, pintle hitch, (Engine Cranks, Does Not Start, Has Partial VIN, Missing Full VIN/ Sticker Damaged)...
ConditionUsed
Usage1,345 Hours
Stock NumberK0304
MLS Number13846222
CategoryGenerator Sets
Last Updated10/8/2025
Location
Jurupa Valley, CA, US
Listed By
JJ Kane Auctions
Multiquip MQP150IV Generator
23 0

2009 Multiquip MQP150IV Generator

Recently Updated
At auction Oct. 16
2009 Multi-Quip MQP150IV Enclosed Portable Generator, 6.7L diesel, with pintle hitch, 135kw, (Engine Cranks, Does Not Start, Has Partial VIN, Missing Full VIN/Sticker Is Damaged) (Reads...
ConditionUsed
Usage3,313 Hours
Stock NumberK0354
MLS Number13846219
CategoryGenerator Sets
Last Updated10/8/2025
Location
Jurupa Valley, CA, US
Listed By
JJ Kane Auctions
Caterpillar 3412 Generator
18 0

2003 Caterpillar 3412 Generator

Recently Updated
At auction Oct. 16
2003 Caterpillar 3412 Enclosed Portable Generator, s/n 5MTPF30293A000139, Cat 3412 diesel, with 600KW generator, stabilizers, pintle hitch, (Runs Operates. Application for Special...
ConditionUsed
Usage97 Hours
Stock NumberK0069
MLS Number13846186
CategoryGenerator Sets
Last Updated10/8/2025
Location
Jurupa Valley, CA, US
Listed By
JJ Kane Auctions
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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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