Generator Sets For Sale

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

Search new and used Generator Sets on MyLittleSalesman.com, with prices from $500 to $1,999,900. Filter by hours, price, or year to find the right Generator near you today.
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 1,662 Generator Listings

1 - 25 of 1,662 listings
1 - 25 of 1,662 listings
Cummins DSHAC Diesel Generator

2005 Cummins DSHAC Diesel Generator

Newly Listed
$39,900 USD
Cummins 200 kW standby (180 kW prime) diesel generator model DSHAC, SN-K050855550. Cummins QSL9-G2 engine rated 364 HP at 1800 RPM, SN-46540233, EPA Tier 3 emissions. 3/60/120/208V, 12...
ConditionUsed
Usage193 Hours
Horse Power364 HP
Engine ModelCummins QSL9-G2 NR3
Emission RatingUSA Tier 3
Stock NumberCentral States #5222
MLS Number14642445
CategoryGenerator Sets
Last Updated10/3/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Cummins DSHAC Diesel Generator

2005 Cummins DSHAC Diesel Generator

Newly Listed
$39,900 USD
Cummins 200 kW standby (180 kW prime) diesel generator model DSHAC, SN-K050849427. Cummins QSL9-G2 engine rated 364 HP at 1800 RPM, SN-46547271, EPA Tier 3 emissions. 3/60/120/208V, 12...
ConditionUsed
Usage207 Hours
Horse Power364 HP
Engine ModelCummins QSL9-G2
Emission RatingUSA Tier 3
Stock NumberCentral States #5221
MLS Number14642443
CategoryGenerator Sets
Last Updated10/3/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Wacker Neuson G25 Diesel Generator

2014 Wacker Neuson G25 Diesel Generator

Recently Updated
Contact for price
Location: ISA WI Yard - Merrill, WI, Isuzu BV-4LE2 Diesel Engine, Mecc Alte 20kW Generator, 1/3 Phase, 60 Hz, Manual/Remote Start, Lifting Hook, Torsion Axle, 2" Coupler, 205/75D15 Tires,...
ConditionUsed
Usage4 Hours
Stock Number108370
MLS Number14617560
CategoryGenerator Sets
Last Updated10/3/2026
Location
Merrill, WI, US
Sold By
Integrity Sales and Auction LLC
Olympian D75P2 Diesel Generator

Olympian D75P2 Diesel Generator

Recently Updated
Contact for price
Location: Lannon, WI, Perkins Turbo Diesel Engine, 75KW, 480 Volts, Approx. 89"X43"X62", Hours Shown: 784, Bill of Sale Only, Running Condition Unknown Inspection by appointment only. Call...
ConditionUsed
Usage784 Hours
Stock Number107656
MLS Number14617422
CategoryGenerator Sets
Last Updated10/3/2026
Location
Lannon, WI, US
Sold By
Integrity Sales and Auction LLC
Spectrum 750 KW Diesel Generator

Spectrum 750 KW Diesel Generator

Recently Updated
$55,000 USD
The Detroit Diesel Spectrum 750 kW generator is a high-capacity, industrial-grade power solution designed for reliable performance in critical applications. Built with a robust engine and...
ConditionUsed
Usage1,519 Hours
Horse Power1120 HP
Engine Model12V2000
MLS Number14338893
CategoryGenerator Sets
Last Updated10/3/2026
Location
Decatur, TX, US
Sold By
Industrial Diesel, Inc.
HIPOWER HRIW125T4F Diesel Generator

2022 HIPOWER HRIW125T4F Diesel Generator

Price Drop $33,000 USD
BARELY USED; LOW HOURS; SOUTHERN UNITS; 17 AVAILABLE; 2022 and 2023 Hipower HRIW-125 T4F Towable Generators; Isuzu 4HK1X Engine; Diesel; Turbocharged; 170 HP; 100kW Prime; 110kW Standby; 3...
ConditionUsed
Usage1,142 Hours
Horse Power170 HP
Engine ModelIsuzu 4HK1X
Rear AxleTandem Axle
Stock NumberCNSMT 31146
MLS Number13649888
CategoryGenerator Sets
Last Updated10/3/2026
Location
Caddo Mills, TX, US
Sold By
Roy's Trucks and Equipment Inc
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 Updated10/3/2026
Location
Knoxville, TN, US
Sold By
Stowers Power Systems
Caterpillar PM3508 Generator

2007 Caterpillar PM3508 Generator

Recently Updated
$410,000 USD
2007 CAT 3508B 1000KW POWER, 3508B ENGINE, 480V, EMCP 3 CONTROL PANEL WITH ISO, FACTORY CAT PACKAGE, MODULE, ONBOARD FUEL TANK, Online Owner's Manual, SWITCHGEAR, TRIPLE AXLE CHASSIS,...
ConditionUsed
Usage963 Hours
Stock NumberZEU0021
MLS Number14475543
CategoryGenerator Sets
Last Updated10/3/2026
Location
Topeka, KS, US
Sold By
Foley Equipment
Caterpillar XQ230 T4F Generator

2021 Caterpillar XQ230 T4F Generator

Recently Updated
$107,500 USD
110% Spill Containment, Battery Charger, Battery Disconnect Switch, Camlocks, Cat Brand Genset, Customer Value Agreement (CVA) 2-year/2,000-hour Customer Value Agreement (CVA), Engine Type -...
ConditionUsed
Usage6,546 Hours
Stock NumberRP15243
MLS Number14368757
CategoryGenerator Sets
Last Updated10/3/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
Caterpillar XQ425 T4F Generator

2019 Caterpillar XQ425 T4F Generator

Recently Updated
$152,500 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Camlocks, Cat Brand Genset, Customer Value Agreement (CVA) 2-year/2,000-hour Customer Value Agreement (CVA),...
ConditionUsed
Usage6,387 Hours
Stock NumberRP14972
MLS Number14335635
CategoryGenerator Sets
Last Updated10/3/2026
Location
Lubbock, TX, US
Sold By
Warren Power Systems
Allmand MP25 Generator

2023 Allmand MP25 Generator

Recently Updated
$16,300 USD
.5% VOLTAGE REGULATION, 12V BATTERY, 2 - CS6369 (50A 3 PRONG LOCKING, 2 - NEMA 5-20R (20A GFI DUPLEX, 2 5/16" BALL HITCH, 22KW STANDBY 3 PH 25KVA 20KW, 52 GL FUEL TANK, 60A MAIN BREAKER,...
ConditionUsed
Usage4,617 Hours
Stock Number6AR1842
MLS Number14342217
CategoryGenerator Sets
Last Updated10/3/2026
Location
Call Foley, MO, US
Sold By
Foley Equipment
MS390G Generator

2024 MS390G Generator

Recently Updated
$257,000 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Camlocks, Engine Governor, Engine Type - Natural Gas, Frequency - 50 / 60 Hz, Generator, Hitch, Trailer, NEMA...
ConditionUsed
Usage7,449 Hours
Stock NumberRP16014
MLS Number14437464
CategoryGenerator Sets
Last Updated10/3/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
MS390G Generator

2024 MS390G Generator

Recently Updated
$256,500 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Camlocks, Engine Governor, Engine Type - Natural Gas, Frequency - 50 / 60 Hz, Generator, Hitch, Trailer, NEMA...
ConditionUsed
Usage6,880 Hours
Stock NumberRP15949
MLS Number14437463
CategoryGenerator Sets
Last Updated10/3/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
MS390G Generator

2024 MS390G Generator

Recently Updated
$308,000 USD
110% Spill Containment, Auto Start, Battery Charger, Battery Disconnect Switch, Camlocks, Engine Governor, Engine Type - Natural Gas, Frequency - 50 / 60 Hz, Generator, Hitch, Trailer, NEMA...
ConditionUsed
Usage8,139 Hours
Stock NumberRP15939
MLS Number14437462
CategoryGenerator Sets
Last Updated10/3/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
MS390G Generator

2024 MS390G Generator

Recently Updated
$230,000 USD
110% Spill Containment, Auto Start, Battery Disconnect Switch, Camlocks, Engine Type - Natural Gas, Frequency - 50 / 60 Hz, Generator, Hitch, Trailer, NEMA Receptables, Regulatory Marking,...
ConditionUsed
Usage9,667 Hours
Stock NumberRP15946
MLS Number14437461
CategoryGenerator Sets
Last Updated10/3/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
Caterpillar WC500G Generator

2012 Caterpillar WC500G Generator

Recently Updated
$99,450 USD
Base Type - Skid, Cat Brand Genset, Circuit Breaker - 3 Pole, Control Panel - EMCP 4.3, Enclosure Material - Steel, Engine Type - Natural Gas, Frequency - 60 Hz, Generator, No Enclosure,...
ConditionUsed
Usage23,922 Hours
Stock NumberRP13185
MLS Number14262300
CategoryGenerator Sets
Last Updated10/3/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
Caterpillar 230 KW Diesel Generator

Caterpillar 230 KW Diesel Generator

Recently Updated
$31,500 USD
Explore this Caterpillar 230 KW Generator for your operation. This used 1997 stationary generator is powered by a Caterpillar 3306 diesel engine delivering 362 HP. It is in operable...
ConditionUsed
Usage417 Hours
Horse Power362 HP
Engine ModelCaterpillar 3306
MLS Number14431826
CategoryGenerator Sets
Last Updated10/2/2026
Location
Decatur, TX, US
Sold By
Industrial Diesel, Inc.
Cummins 80 KW Diesel Generator

Cummins 80 KW Diesel Generator

Recently Updated
$14,000 USD
The Cummins Onan 80KW generator is a commercial-grade diesel designed to provide dependable standby or prime power for businesses, industrial facilities, and critical infrastructure. Built...
ConditionUsed
Usage572 Hours
Horse Power134 HP
Engine ModelCummins 6BT5.9
Emission RatingUSA Tier 1
MLS Number14399477
CategoryGenerator Sets
Last Updated10/2/2026
Location
Decatur, TX, US
Sold By
Industrial Diesel, 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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