Generator Sets For Sale

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

Shop new and used Generator Sets inventory on MyLittleSalesman.com, with prices from $500 to $1,999,900. Filter by hours, price, or year to see work-ready Generator Sets available near you now.
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 1,694 Generator Listings

1 - 25 of 1,694 listings
1 - 25 of 1,694 listings
Featured Item
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 Updated11/12/2026
Location
Fort Myers, FL, US
Sold By
Pantropic Power
Featured Item
Caterpillar XQ 350 (120-480 V) 350@1800/3/SBY EKW@RPM/PH/R Generator

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

$65,000 USD
60 HZ, CAT C13 ENGINE, CATERPILLAR XA350 TIER4I, CIRCUIT BREAKER, CEM, CONTINUOUS, DIESEL, DUAL WALL FUEL TANK, EMCP4.2 CONTROL PANEL AND, EPA Label, FUEL TANK, FUEL VALVE, GENERATORS,...
Inspection Report
ConditionUsed
Usage12,788 Hours
Stock NumberNR12803
MLS Number14475880
CategoryGenerator Sets
Last Updated11/12/2026
Location
San Leandro, CA, US
Sold By
Peterson Power Systems
Featured Item
Caterpillar XQ0350 Generator

2014 Caterpillar XQ0350 Generator

$110,000 USD
60 HZ, CAT C13 ENGINE, CATERPILLAR XA350 TIER4I, CIRCUIT BREAKER, CEM, CONTINUOUS, DIESEL, DUAL WALL FUEL TANK, EMCP4.2 CONTROL PANEL AND, EPA Label, FUEL TANK, FUEL VALVE, GENERATORS, JW...
Inspection Report
ConditionUsed
Usage5,491 Hours
Stock NumberUE01157
MLS Number11077982
CategoryGenerator Sets
Last Updated11/12/2026
Location
Eugene, OR, US
Sold By
Peterson Power Systems
Featured Item
Caterpillar 3406 Generator

1981 Caterpillar 3406 Generator

$24,500 USD
Auto Start, Battery Charger, Battery Set, Cat Brand Genset, Circuit Breaker, Control Panel - Other, Engine Type - Diesel, Frequency - 60 Hz, Generator, Jacket Water Heater, No Enclosure,...
ConditionUsed
Usage447 Hours
Stock NumberEU00183
MLS Number14099064
CategoryGenerator Sets
Last Updated11/12/2026
Location
Knoxville, TN, US
Sold By
Stowers Power Systems
Featured Item
Caterpillar 3412 Generator

1995 Caterpillar 3412 Generator

$99,000 USD
Auto Start, Base Tank, Battery Charger, Battery Set, Cat Brand Genset, Circuit Breaker, Control Panel - Other, Enclosure Lights, Enclosure Material - Aluminum, Engine Type - Diesel, EPA...
ConditionUsed
Usage541 Hours
Stock NumberEU00147
MLS Number12740183
CategoryGenerator Sets
Last Updated11/12/2026
Location
Knoxville, TN, US
Sold By
Stowers Power Systems
Featured Item
Multiquip DCA150 Generator

2014 Multiquip DCA150 Generator

$45,000 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Camlocks, Emissions Level, Engine Type - Diesel, Frequency - 60 Hz, Fuel Tank Type - Dual Wall, Generator,...
ConditionUsed
Usage5,147 Hours
Stock NumberE16389
MLS Number13725278
CategoryGenerator Sets
Last Updated11/12/2026
Location
West Columbia, SC, US
Sold By
Blanchard Power Systems
Multiquip DCA70SSIU4F Generator

2023 Multiquip DCA70SSIU4F Generator

Recently Updated
$71,000 USD
Contact for rental/lease prices
GENERATOR 56KW, DSL, TRAILER(FUEL CELL), POWER BALANCER. DCA70SSIU4F, FOB: FLEET MAINTAINED - RECORDS AVAILABLE ON REQUEST, PRICE DOES NOT INCLUDE SALES TAX HOUR METER READING MAY VARY DUE...
ConditionUsed
Usage315 Hours
Stock Number4648191
MLS Number13031463
CategoryGenerator Sets
Last Updated11/12/2026
Location
Ketchikan, AK, US
Sold By
Tyler Rental Inc.

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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