Generator Sets For Sale

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

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 1,761 Generator Listings

1 - 25 of 1,761 listings
1 - 25 of 1,761 listings
Featured Item
Caterpillar C13 Diesel Generator

2026 Caterpillar C13 Diesel Generator

$129,900 USD
New Caterpillar 400 kW standby diesel generator, D400GC, SN-RE400505. CAT C13 engine rated 609 HP at 1800 RPM, SN-PW302599, EPA Tier 3 emissions. 3/60/277/480V. 800 Amp 100% rated adjustable...
ConditionNew
Horse Power609 HP
Engine ModelCaterpillar C13
Emission RatingUSA Tier 3
Stock NumberCentral States #5103
MLS Number14447361
CategoryGenerator Sets
Last Updated6/29/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Featured Item
Cummins DFEK Diesel Generator

2026 Cummins DFEK Diesel Generator

$149,900 USD
New Cummins 500 kW standby (455 kW prime) diesel generator set, model DFEK, SN-F260563041. Cummins QSX15-G9 engine rated 755 HP at 1800 RPM, EPA Tier 2 emissions. 3/60/277/480V, 12 lead...
ConditionNew
Horse Power755 HP
Engine ModelCummins QSX15-G9 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4317
MLS Number14362989
CategoryGenerator Sets
Last Updated6/29/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Featured Item
Cummins DQDAA Diesel Generator

2013 Cummins DQDAA Diesel Generator

$59,900 USD
Cummins 250 kW standby (225 kW prime) diesel generator set model DQDAA, SN-D130490581. Cummins QSL9-G7 engine rated 464 HP at 1800 RPM, SN-73516878, EPA Tier 3 emissions. 3/60/277/480V, 12...
ConditionUsed
Usage85 Hours
Horse Power464 HP
Engine ModelCummins QSL9-G7
Emission RatingUSA Tier 3
Stock NumberCentral States #5065
MLS Number14362965
CategoryGenerator Sets
Last Updated6/29/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Cummins 2500 KW Diesel Generator

2022 Cummins 2500 KW Diesel Generator

Recently Updated
$749,900 USD
New Cummins 2500 kW standby (2250 kW prime) diesel generator set model DQKAN, SN-I220141108. Cummins QSK60-G19 NR2 engine rated 3640 HP at 1800 RPM, SN-33228728, EPA Tier 2 emissions....
ConditionNew
Horse Power3640 HP
Engine ModelCummins QSK60-G19 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #5027
MLS Number14308872
CategoryGenerator Sets
Last Updated7/25/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Cummins DQCB Diesel Generator

2015 Cummins DQCB Diesel Generator

Recently Updated
$159,900 USD
Cummins 750 kW standby (680 kW prime) diesel generator set, model DQCB, SN-B150797060. Cummins QSK23-G7 engine rated 1220 HP at 1800 RPM, SN-85000829, EPA Tier 2 emissions. 3/60/277/480V, 4...
ConditionNew
Usage433 Hours
Horse Power1220 HP
Engine ModelCummins QSK23-G7 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4978
MLS Number14220558
CategoryGenerator Sets
Last Updated7/25/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Multiquip 56 Kw Diesel Generator

2016 Multiquip 56 Kw Diesel Generator

Recently Updated
$16,500 USD
2015 US EPA Label, Isuzu BR-4JJ1X 4 Cylinder 2.9 L Diesel Engine, 70 kVA/56 kW Rated 3 Phase Output, 240 V / 480 V Rated Voltage, 40 kVA,/40 kW, Rated Single Phase Output, 240 V / 120 V...
ConditionUsed
Usage8,750 Hours
Stock Number4618
MLS Number14082752
CategoryGenerator Sets
Last Updated7/25/2026
Location
Cedar City, UT, US
Sold By
Blue Point Sales
Cummins DQGAB Diesel Generator

2011 Cummins DQGAB Diesel Generator

Recently Updated
$359,900 USD
Used Cummins 1500 kW standby (1350 kW prime) diesel generator set model DQGAB, SN-G110233080. Cummins QSK50-G4 engine rated 2220 HP at 1800 RPM, SN-25366503, EPA Tier 2 emissions....
ConditionUsed
Usage770 Hours
Horse Power2220 HP
Engine ModelCummins QSK50-G4 NR2
Emission RatingUSA Tier 2
Stock NumberCentral States #4600
MLS Number13318557
CategoryGenerator Sets
Last Updated7/25/2026
Location
Waukesha, WI, US
Sold By
Central States Diesel Generators
Caterpillar XQ230 T4F Generator

2023 Caterpillar XQ230 T4F Generator

Recently Updated
$123,500 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), Emissions...
ConditionUsed
Usage6,754 Hours
Stock NumberRP15452
MLS Number13885618
CategoryGenerator Sets
Last Updated7/25/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
Caterpillar XQ230 T4F Generator

2021 Caterpillar XQ230 T4F Generator

Price Drop $74,625 USD
110% Spill Containment, Battery Disconnect Switch, Camlocks, Cat Brand Genset, Customer Value Agreement (CVA) 2-year/2,000-hour Customer Value Agreement (CVA), Emissions Level - EPA - EPA...
ConditionUsed
Usage6,782 Hours
Stock NumberRP15280
MLS Number13865889
CategoryGenerator Sets
Last Updated7/25/2026
Location
Midland, TX, US
Sold By
Warren Power Systems
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
Usage1,294 Hours
Stock NumberUEN237
MLS Number12803064
CategoryGenerator Sets
Last Updated7/25/2026
Location
Call Foley, MO, US
Sold By
Foley Equipment
Caterpillar XQ125KVA Generator

2022 Caterpillar XQ125KVA Generator

Recently Updated
$63,000 USD
125C TEMP RISE OVER 40C AMB, 2022 CAT XQ125KVA, 3 PHASE NEMA LOCK RECEPTACLE, 3POLE CB, 480V 60 HZ (XQ125), 60 HZ 100 KW, 60HZ 480 VOLT (WYE), Base Type - Standard, BATTERY CHARGER UL10A...
ConditionUsed
Usage2,527 Hours
Stock NumberVER009
MLS Number13332926
CategoryGenerator Sets
Last Updated7/25/2026
Location
Call Foley, KS, US
Sold By
Foley Equipment
Caterpillar XQ35KVA Generator

2021 Caterpillar XQ35KVA Generator

Recently Updated
$21,800 USD
*CERTIFICATION AR, *CONNECTION GP, *CONNECTION GP G, *END USE: EP RETAIL RENTAL, *ENGINE AR PRIME, *GENERAL AR, *GENERATOR ARPWR, *HEATER GP JW BSC, *OPTIONAL ANTICONDENSATION HEA,...
ConditionUsed
Usage5,798 Hours
Stock NumberUEN095
MLS Number14367449
CategoryGenerator Sets
Last Updated7/25/2026
Location
Call Foley, 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
Usage10,611 Hours
Stock NumberREN214
MLS Number11824660
CategoryGenerator Sets
Last Updated7/25/2026
Location
Call Foley, KS, US
Sold By
Foley Equipment
Caterpillar Generator Set 3456

Caterpillar Generator Set 3456

Newly Listed
At auction Jul. 24
Online Auction for Government Surplus - Auction Ends 07/29/2026 - To see full details, additional photos, and current bid, please open this link:, https://govdeals.bid/4bV7FdB LOT#...
Lot Number23433-743
ConditionUsed
Stock Number23433-743
MLS Number14505519
CategoryGenerator Sets
Last Updated7/24/2026
Location
Crestview, FL, US
Listed By
GovDeals, Inc.
Cummins 1250 KW Diesel Generator

Cummins 1250 KW Diesel Generator

Recently Updated
$74,000 USD
New Arrival! PENDING INSPECTION The Cummins 1250kW generator set delivers dependable prime and standby power for industrial, commercial, and critical backup applications. Powered by a...
ConditionUsed
Usage506 Hours
Horse Power1850 HP
Engine ModelCummins KTTA50-GS/GC
MLS Number14387999
CategoryGenerator Sets
Last Updated7/24/2026
Location
Decatur, TX, US
Sold By
Industrial Diesel, 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
Usage4,989 Hours
Stock Number46-36001
MLS Number10858018
CategoryGenerator Sets
Last Updated7/24/2026
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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