Generator Sets For Sale

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

Find new and used Generator Sets on MyLittleSalesman.com, with prices from $500 to $1,999,900. Filter by hours, price, or year to zero in on the exact Generator.
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 1,666 Generator Listings

1 - 25 of 1,666 listings
1 - 25 of 1,666 listings
Cummins DFLC Diesel Generator

1996 Cummins DFLC Diesel Generator

Newly Listed
$129,900 USD
Cummins 1250 kW standby (1100 kW prime) diesel generator set model DFLC, SN-E960605445. Cummins KTA50-G3 engine rated 1850 HP at 1800 RPM, SN-33133820. 3/60/277/480V. 2000 Amp main-line...
ConditionUsed
Usage190 Hours
Horse Power1850 HP
Engine ModelCummins KTA50-G3
Stock NumberCentral States #5280
MLS Number14737960
CategoryGenerator Sets
Last Updated11/10/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Caterpillar C18 Diesel Generator

2023 Caterpillar C18 Diesel Generator

Newly Listed
$199,900 USD
New Caterpillar 750 kW standby (680 kW prime) diesel generator D750GC SN-T3402298. CAT C18 engine rated 1112 HP at 1800 RPM, SN-T3402298, EPA Tier 2 emissions. 3/60/277/480V. 1200 Amp...
ConditionNew
Horse Power1112 HP
Engine ModelCaterpillar C18
Emission RatingUSA Tier 2
Stock NumberCentral States #5283
MLS Number14737954
CategoryGenerator Sets
Last Updated11/10/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Caterpillar C18 Diesel Generator

2023 Caterpillar C18 Diesel Generator

Newly Listed
$299,900 USD
New Caterpillar 750 kW standby (680 kW prime) diesel generator D750GC SN-T3402244. CAT C18 engine rated 1112 HP at 1800 RPM, SN-LTH00945, EPA Tier 2 emissions. 3/60/277/480V. 1200 Amp...
ConditionNew
Horse Power1112 HP
Engine ModelCaterpillar C18
Emission RatingUSA Tier 2
Stock NumberCentral States #5282
MLS Number14737871
CategoryGenerator Sets
Last Updated11/10/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Cummins DQFAD Diesel Generator

2026 Cummins DQFAD Diesel Generator

Newly Listed
$379,900 USD
New Cummins 1000 kW standby (900 kW prime) diesel generator set, model DQFAD, SN-F260561168. Cummins QST30-G5 NR2 engine rated 1490 HP at 1800 RPM, SN-37299373, EPA Tier 2 emissions....
ConditionNew
Horse Power1490 HP
Engine ModelCummins QST30-G5 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4320
MLS Number14737856
CategoryGenerator Sets
Last Updated11/10/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Generac G0097440 Diesel Generator

2021 Generac G0097440 Diesel Generator

Newly Listed
Contact for price
Location: Jasper, TN, Zexel 4 Cylinder Diesel Engine, Generac G0097440, 15KW Approx. 81" Long, 29" Wide, 64" High, 120/240V, Single Phase, Hours Shown: 11, SN:3008532470 Bill of Sale Only ...
ConditionUsed
Usage11 Hours
Stock Number112663
MLS Number14737794
CategoryGenerator Sets
Last Updated11/10/2026
Location
Jasper, TN, US
Sold By
Integrity Sales and Auction LLC
Cummins 750 KW Enclosed Generator

Cummins 750 KW Enclosed Generator

Recently Updated
$120,000 USD
The Cummins 750 kW enclosed diesel generator is a heavy-duty power system designed for commercial, industrial, and critical backup power applications. Built with a powerful Cummins diesel...
ConditionUsed
Usage272 Hours
Horse Power940 HP
Engine ModelCummins QST30
MLS Number14144634
CategoryGenerator Sets
Last Updated11/10/2026
Location
Decatur, TX, US
Sold By
Industrial Diesel, Inc.
2012 Caterpillar SR4B 517KW Generator Set

2012 Caterpillar SR4B 517KW Generator Set

Recently Updated
At auction Nov. 24
Location Cottage Grove OR ***End-User Consignment*** VIN: S737054 Engine: Caterpillar C-15 6cyl Diesel 517KW, 3-Phase, 60 Hz, 1800 rpm, 400 kVA, 2,500 gallon auxiliary diesel tank,...
Lot NumberTEMP3760
ConditionUsed
Usage11,387 Hours
Engine ModelCaterpillar C-15
Stock Number102895
MLS Number14682976
CategoryGenerator Sets
Last Updated11/10/2026
Location
Cottage Grove, OR, US
Listed By
J Stout Auctions
Caterpillar XQ60KVA Generator

2020 Caterpillar XQ60KVA Generator

Price Drop $14,700 USD
*CAPTIVE: 4852409C3.4BPS102, *CERTIFICATION AR, *CONNECTION GP, *CONNECTION GP G, *END USE: EP RENTAL, *EXCITER GPPERM, *GENERAL AR, *GENERATOR ARPWR, *OPTIONAL ANTICONDENSATION HEA,...
ConditionUsed
Usage11,920 Hours
Stock NumberSEN260
MLS Number13128015
CategoryGenerator Sets
Last Updated11/9/2026
Location
Kansas City, MO, US
Sold By
Foley Equipment
Caterpillar XQ230 T4F Generator

2021 Caterpillar XQ230 T4F Generator

Recently Updated
$105,425 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), Emissions...
ConditionUsed
Usage6,262 Hours
Stock NumberRP15282
MLS Number14005948
CategoryGenerator Sets
Last Updated11/8/2026
Location
Oklahoma City, OK, US
Sold By
Warren Power Systems

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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