Generator Sets For Sale

New or Used Generators (Gen Set) by Owners and Dealers

Find deals on new and used Generator Sets on MyLittleSalesman.com, with prices from $500 to $1,999,900. Use filters for hours, price, or year to compare options.
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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For Rent (20)

Showing 1 - 25 of 1,660 Generator Listings

1 - 25 of 1,660 listings
1 - 25 of 1,660 listings
2003 Caterpillar Enclosed Portable Generator

2003 Caterpillar Enclosed Portable Generator

Newly Listed
At auction Nov. 24
2003 Caterpillar Enclosed Portable Generator, s/n 6YR02909, Cat 3306 Diesel, with 3 Phase, 480 Volts, (Reads 1,000 Engine Hours) (Non-Titled) (Seller States: Ran Before Removed For City...
ConditionUsed
Usage1,000 Hours
MLS Number14741827
CategoryGenerator Sets
Last Updated11/11/2026
Location
North Venice, FL, US
Listed By
JJ Kane Auctions
Generac GP17500E Generator

Generac GP17500E Generator

Newly Listed
At auction Nov. 24
Generac GP17500E Generator, s/n 5560801, Gas, (Reads 31 Engine Hours) (Not Running, Condition Unknown) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in...
ConditionUsed
Usage31 Hours
Stock NumberF1259
MLS Number14741784
CategoryGenerator Sets
Last Updated11/11/2026
Location
Thonotosassa, FL, US
Listed By
JJ Kane Auctions
Wacker Neuson Generator G70 58kW Portable Generator

Wacker Neuson Generator G70 58kW Portable Generator

Newly Listed
At auction Nov. 13
Wacker Neuson Generator G70 58kW Portable Generator, s/n WNCGMM01HPUM01279, Kohler Diesel, (Reads 4,707 Engine Hours) (Non Titled) (Condition Unknown) (Engine Performance Concerns-Runs ...
ConditionUsed
Usage4,707 Hours
Stock NumberRN173
MLS Number14741546
CategoryGenerator Sets
Last Updated11/11/2026
Location
Rome, NY, US
Listed By
JJ Kane Auctions
2010 Wacker Neuson E300 ES Duel Reeled Hydronic Surface Heater

2010 Wacker Neuson E300 ES Duel Reeled Hydronic Surface Heater

Newly Listed
At auction Nov. 13
2010 Wacker Neuson E300 ES Duel Reeled Hydronic Surface Heater, s/n 4386, 3-cyl Diesel, (Reads 4,609 Engine Hours) (Non Titled) (Not Running, Condition Unknown) (Removal is by Appointment...
ConditionUsed
Usage4,609 Hours
Stock NumberHM516
MLS Number14741194
CategoryGenerator Sets
Last Updated11/11/2026
Location
Harmans, MD, US
Listed By
JJ Kane Auctions
Caterpillar XQ100 Generator

2012 Caterpillar XQ100 Generator

Recently Updated
Contact for price
110% Spill Containment, 3 Way Fuel Valve, Auto Start, Battery Charger, Battery Disconnect Switch, Cat Brand Genset, Coolant Heater, Emissions Level, Engine Type - Diesel, Fire Extinguisher,...
ConditionUsed
Stock NumberEU00192
MLS Number14475704
CategoryGenerator Sets
Last Updated11/11/2026
Location
Knoxville, TN, US
Sold By
Stowers Power Systems
Caterpillar XQ 1250 Generator

1990 Caterpillar XQ 1250 Generator

Price Drop $400,000 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
Usage1,200 Hours
MLS Number12860676
CategoryGenerator Sets
Last Updated11/11/2026
Location
Fort Myers, FL, US
Sold By
Pantropic Power
Wisconsin Propane Portable Generator

Wisconsin Propane Portable Generator

Newly Listed
At auction Nov. 25
Wisconsin Propane Portable Generator, Pin Hitch, Wisconsin THD Propane Engine, Universalite 7500 watt Generator, Single Phase, Approximately 125 Gallon Tank with 50 Percent Fuel, Electric...
ConditionUsed
Stock NumberMH9509
MLS Number14738668
CategoryGenerator Sets
Last Updated11/11/2026
Location
Bloomfield, NE, US
Listed By
BigIron Auctions

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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