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 $1,450,000. Filter by hours, price, or year to pinpoint the closest Generator that fits your budget.
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 1,924 Generator Listings

1 - 25 of 1,924 listings
1 - 25 of 1,924 listings
Featured Item
Caterpillar 3512 Generator

1986 Caterpillar 3512 Generator

$145,385.12 USD
3 POLE CIRCUIT BREAKER, 60 HZ, AUTO START, CAT BRAND GENSET, CSA CERTIFICATION, DIESEL, EMCP 4.2 CONTROL PANEL, NO ENCLOSURE, Online Owner's Manual, Package Type Dealer Packaged Unit,...
ConditionUsed
Usage1,500 Hours
Stock NumberE220008M
MLS Number11814956
CategoryGenerator Sets
Last Updated2/9/2026
Location
Pointe-Claire, QC, Canada
Sold By
Toromont Power Systems
Featured Item
2023 GENERAC G-25 TRAILER MOUNTED 25KW GENERATOR - ISUZU DIESEL - ONLY 3,000 HOURS - LIKE NEW

2023 GENERAC G-25 TRAILER MOUNTED 25KW GENERATOR - ISUZU DIESEL - ONLY 3,000 HOURS - LIKE NEW

$13,500 USD
PRO-QUIPLLC.COM CALL 954-367-3867 2023 GENERAC MDG25IF4 25KW TRAILER MOUNTED GENERATOR 3 PHASE ISUZU TURBO DIESEL ONLY 3,034 HOURS STILL LIKE NEW 100% RUST FREE AND IMMACULATE FRESH...
ConditionUsed
Usage3,034 Hours
Horse Power49 HP
Engine ModelIsuzu 2.2
Weight2771
Stock Number25 KW - ISUZU TURBO DIESEL - 3 PHASE
MLS Number14021856
CategoryGenerator Sets
Last Updated1/21/2026
Location
Pompano Beach, FL, US
Sold By
Pro Quip
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 Updated2/9/2026
Location
West Columbia, SC, US
Sold By
Blanchard Power Systems
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

$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 Updated2/9/2026
Location
Eugene, OR, US
Sold By
Peterson Power Systems
Featured Item
Caterpillar XQ2000 Mobile Power Module Generator Set

2023 Caterpillar XQ2000 Mobile Power Module Generator Set

$1,200,000 USD
3 Way Fuel Valve, Auto Start, Battery Charger, Camlocks, CE Plate, Emissions Level, Engine Governor, Engine Type - Diesel, Fire Extinguisher, Frequency - 50 / 60 Hz, Fuel Tank Type - Dual...
Inspection Report
ConditionUsed
MLS Number12860680
CategoryGenerator Sets
Last Updated2/9/2026
Location
Fort Myers, FL, US
Sold By
Pantropic Power
Featured Item
Caterpillar XQ 2000 (277-480 V) 2000@1800/3/SBY EKW@RPM/PH/R Generator

Caterpillar XQ 2000 (277-480 V) 2000@1800/3/SBY EKW@RPM/PH/R Generator

$899,000 USD
60 HZ, BATTERY CHARGER, BATTERY DISCONNECT SWITCH, BRAND NEW CONTAINER, NEW 1250GLS FUEL TANK, NEW HORIZONTAL RADIATOR, NEW EXHAUST SYSTEM, GENSET CONTROL PANEL EMCP 4.4 WITH MULTIFUNCTION...
ConditionUsed
Usage1,000 Hours
MLS Number11819023
CategoryGenerator Sets
Last Updated2/9/2026
Location
Miami, FL, US
Sold By
Pantropic Power
Catapillar Diesel Generator

Catapillar Diesel Generator

Newly Listed
At auction Feb. 12
Online Auction for Government Surplus - Auction Ends 02/25/2026 - To see full details, additional photos, and current bid, please open this link:, https://govdeals.bid/46GJrBd LOT# 6905-47...
Lot Number6905-47
ConditionUsed
Usage570 Hours
Stock Number6905-47
MLS Number14141012
CategoryGenerator Sets
Last Updated2/12/2026
Location
Humboldt, TN, US
Listed By
GovDeals, Inc.
Cummins DQFAD Diesel Generator

2025 Cummins DQFAD Diesel Generator

Price Drop $349,900 USD
New Cummins 1000 kW standby (900 kW prime) diesel generator set, model DQFAD, SN-L250516247. Cummins QST30-G5 NR2 engine rated 1490 HP at 1800 RPM, SN-37297028, EPA Tier 2 emissions. ...
ConditionNew
Horse Power1490 HP
Engine ModelCummins QST30-G5 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4310
MLS Number14069981
CategoryGenerator Sets
Last Updated2/12/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Cummins DQFAD Diesel Generator

2025 Cummins DQFAD Diesel Generator

Price Drop $349,900 USD
New Cummins 1000 kW standby (900 kW prime) diesel generator set, model DQFAD, SN-L250516246. Cummins QST30-G5 NR2 engine rated 1490 HP at 1800 RPM, SN-37297058, EPA Tier 2 emissions. ...
ConditionNew
Horse Power1490 HP
Engine ModelCummins QST30-G5 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4309
MLS Number14069978
CategoryGenerator Sets
Last Updated2/12/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Multiquip MQ180 T4F Generator

2021 Multiquip MQ180 T4F Generator

Recently Updated
$52,500 USD
110% Spill Containment, Battery Charger, Battery Disconnect Switch, Camlocks, Emissions Level, Engine Governor, Engine Type - Diesel, Frequency - 60 Hz, Fuel Tank Type - Dual Wall, Generator...
ConditionUsed
Usage9,240 Hours
Stock NumberRP15217
MLS Number14083559
CategoryGenerator Sets
Last Updated2/12/2026
Location
Amarillo, TX, US
Sold By
Warren Power Systems
Cummins DQGAA Diesel Generator

2010 Cummins DQGAA Diesel Generator

Recently Updated
$299,900 USD
Cummins 1250 kW standby (1100 kW prime) diesel generator set model DQGAA, SN-C100108254. Cummins QSK50-G4 engine rated 2220 HP at 1800 RPM, SN-33180312, EPA Tier 2 emissions. 3/60/277/480V...
ConditionUsed
Usage648 Hours
Horse Power2220 HP
Engine ModelCummins QSKTA50-GE
Emission RatingUSA Tier 2
Stock NumberCentral States #4915
MLS Number14045898
CategoryGenerator Sets
Last Updated2/12/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Multiquip MQ180 T4F Generator

2018 Multiquip MQ180 T4F Generator

Recently Updated
$62,500 USD
110% Spill Containment, Battery Charger, Battery Disconnect Switch, Camlocks, Emissions Level, Engine Governor, Engine Type - Diesel, Frequency - 60 Hz, Fuel Tank Type - Dual Wall, Generator...
ConditionUsed
Usage6,479 Hours
Stock NumberRP14379
MLS Number13850274
CategoryGenerator Sets
Last Updated2/12/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
Cummins DQFAD Diesel Generator

2025 Cummins DQFAD Diesel Generator

Recently Updated
$349,900 USD
New Cummins 1000 kW standby (900 kW prime) diesel generator set, model DQFAD, SN-K250506771. Cummins QST30-G5 NR2 engine rated 1490 HP at 1800 RPM, SN-37297055, EPA Tier 2 emissions. ...
ConditionNew
Horse Power1490 HP
Engine ModelCummins QST30-G5 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4048
MLS Number13781492
CategoryGenerator Sets
Last Updated2/12/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Caterpillar XQ100-RM Generator

2013 Caterpillar XQ100-RM Generator

Recently Updated
$82,500 USD
100KW STANDBY, 2013 CAT XQ100 PORTABLE, CAT TIER 3 REMAN ENGINE, Control Panel - EMCP 4.2, DIP BAKE ON GENERATOR END, DUAL VOLTAGE, EQUIPMENT, GENERATOR SET, Online Owner's Manual, ZERO...
ConditionUsed
Usage8 Hours
Stock NumberXEU0022
MLS Number12931550
CategoryGenerator Sets
Last Updated2/12/2026
Location
Call Foley, MO, US
Sold By
Foley Equipment
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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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