Generator Sets For Sale

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

Find available new and used Generator Sets on MyLittleSalesman.com, with prices from $500 to $1,899,900. Use filters for hours, price, or year to narrow and find the right Generator available near you.
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 1,670 Generator Listings

1 - 25 of 1,670 listings
1 - 25 of 1,670 listings
Cummins DQFAC Diesel Generator

2010 Cummins DQFAC Diesel Generator

Newly Listed
$179,900 USD
Cummins 900 kW standby (818 kW prime) diesel generator set, model DQFAC, SN-L100176020. Cummins QST30-G5 engine rated 1490 HP at 1800 RPM, SN-37247721, EPA Tier 2 emissions. 3/60/277/480V,...
ConditionUsed
Usage502 Hours
Horse Power1490 HP
Engine ModelCummins QST30-G5
Emission RatingUSA Tier 2
Stock NumberCentral States #5184
MLS Number14573771
CategoryGenerator Sets
Last Updated8/29/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Kohler 80RZG Natural Gas Generator

2001 Kohler 80RZG Natural Gas Generator

Newly Listed
$12,900 USD
Kohler 61 kW standby (56 kW prime) natural gas / propane generator model 80RZG, SN-694323. GM Vortec 8.1L engine rated 150 HP at 1800 RPM, SN-8.1L-05034. 1/60/120/240V single phase, 12...
ConditionUsed
Usage519 Hours
Horse Power150 HP
Engine ModelGM 8.1L
Stock NumberCentral States #5187
MLS Number14573769
CategoryGenerator Sets
Last Updated8/29/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Cummins DQFAD Diesel Generator

2026 Cummins DQFAD Diesel Generator

Recently Updated
$379,900 USD
New Cummins 1000 kW standby (900 kW prime) diesel generator set, model DQFAD, SN-F260561167. Cummins QST30-G5 NR2 engine rated 1490 HP at 1800 RPM, SN-37299440, EPA Tier 2 emissions....
ConditionNew
Horse Power1490 HP
Engine ModelCummins QST30-G5 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4319
MLS Number14391430
CategoryGenerator Sets
Last Updated8/29/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
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 Updated8/29/2026
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
Usage4,405 Hours
Stock Number6AR1842
MLS Number14342217
CategoryGenerator Sets
Last Updated8/29/2026
Location
Call Foley, MO, US
Sold By
Foley Equipment
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
Usage9,622 Hours
Stock NumberRP15946
MLS Number14437461
CategoryGenerator Sets
Last Updated8/29/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
Caterpillar XQ200 Generator

2015 Caterpillar XQ200 Generator

Recently Updated
$126,000 USD
200 KW STANDBY, CAT C7.1 ENGINE, CAT XQ200 T4I PORTABLE, Control Panel - EMCP 4.2, GENERATOR SET, MULTI- VOLTAGE, NEED A KS VIN INSPCT TO FLEETADD, Online Owner's Manual, TRAILER VIN...
ConditionUsed
Usage922 Hours
Stock NumberYEU0018
MLS Number13973070
CategoryGenerator Sets
Last Updated8/29/2026
Location
Call Foley, KS, US
Sold By
Foley Equipment
Caterpillar XQ425KVA Generator

2024 Caterpillar XQ425KVA Generator

Recently Updated
$210,000 USD
(109 degF), 500M (1640, (kW and kVAr), and, (ModbusTCP) and, (Prime), *518BHP 340 GEN KW W/F 60 HZ PR, *CAPTIVE: 5194400C13PS118, *CERTIFICATION AR, *ELECTRIC DRIVE TRAILER, *END USE: EP...
ConditionUsed
Usage1,777 Hours
Stock NumberUEN237
MLS Number12803064
CategoryGenerator Sets
Last Updated8/29/2026
Location
Call Foley, MO, US
Sold By
Foley Equipment
Caterpillar XQ570KVA Generator

2023 Caterpillar XQ570KVA Generator

Recently Updated
$282,200 USD
(1150 ft), (Prime), *779 BHP 500 GEN KW W/F 60 HZ S, *CAPTIVE: 5194410C18PS072, *CERTIFICATION AR, *END USE: EP RETAIL RENTAL, *GENERAL AR, *GENERATOR AR POWER, *MODULE AR DEF, *MODULE AR ...
ConditionUsed
Usage1,027 Hours
Stock NumberUEN239
MLS Number13349508
CategoryGenerator Sets
Last Updated8/29/2026
Location
Kansas City, MO, US
Sold By
Foley Equipment
WANCO WSP80KVA Generator

2018 WANCO WSP80KVA Generator

Recently Updated
$13,100 USD
1 EA 208V 3 PHASE PLUG, 124 GL DOUBLE WALL FUEL TANK,, 24 HOUR RUN TIME, ADJUSTABLE, 3 FLEX PERKINS 1104 ENGINE,, CAT XQ COLD WEATHER PLUG, CUSTOM FENDERS, MESH UNDER A-, CUSTOM TRAILER...
ConditionUsed
Usage10,984 Hours
Stock NumberREN214
MLS Number11824660
CategoryGenerator Sets
Last Updated8/29/2026
Location
Call Foley, KS, US
Sold By
Foley Equipment
Mixed Lot – (3) LX Power Distribution Panels & (2) APC Rack XL Mounts

Mixed Lot – (3) LX Power Distribution Panels & (2) APC Rack XL Mounts

Newly Listed
At auction Aug. 28
Online Auction for Government Surplus - Auction Ends 09/02/2026 - To see full details, additional photos, and current bid, please open this link:, https://govdeals.bid/4wZupBd LOT#...
Lot Number28050-1927
ConditionUsed
Stock Number28050-1927
MLS Number14572005
CategoryGenerator Sets
Last Updated8/28/2026
Location
Oklahoma City, OK, US
Listed By
GovDeals, Inc.
1000 KW MTU - Detroit Diesel Generator

2008 1000 KW MTU - Detroit Diesel Generator

Recently Updated
At auction Aug. 28
Online Auction for Government Surplus - Auction Ends 09/08/2026 - To see full details, additional photos, and current bid, please open this link:, https://govdeals.bid/4cehtQh LOT#...
Lot Number20379-26211
ConditionUsed
Usage1,003 Hours
Stock Number20379-26211
MLS Number14475013
CategoryGenerator Sets
Last Updated8/28/2026
Location
Winchester, VA, US
Listed By
GovDeals, Inc.
Multiquip DCA36SPXU4F Generator

2020 Multiquip DCA36SPXU4F Generator

Recently Updated
$24,500 USD
Contact for rental/lease prices
36KW DSL, SUPER SILENT, TRAILER MOUNTED FOB: FLEET MAINTAINED - RECORDS AVAILABLE ON REQUEST, PRICE DOES NOT INCLUDE SALES TAX HOUR METER READING MAY VARY DUE TO ACTIVE INVENTORY, SOLD WHERE...
ConditionUsed
Usage5,202 Hours
Stock Number46-36001
MLS Number10858018
CategoryGenerator Sets
Last Updated8/28/2026
Location
Juneau, AK, US
Sold By
Tyler Rental Inc.
Multiquip DCA70SSI Generator

2010 Multiquip DCA70SSI Generator

Recently Updated
$12,500 USD
Contact for rental/lease prices
Isuzu Tier 2 Engine, Trailer Mounted, Super Silent, Good Paint, Good Tires Fully Serviced, Aux Tank,56KW,70KVA FOB: FLEET MAINTAINED - RECORDS AVAILABLE ON REQUEST, PRICE DOES NOT INCLUDE...
ConditionUsed
Usage25,606 Hours
Stock Number46-48177
MLS Number8618575
CategoryGenerator Sets
Last Updated8/28/2026
Location
Juneau, 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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