Generator Sets For Sale

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

Explore 2,060 new and used Generator Sets on MyLittleSalesman.com, with prices from $500 to $1,349,900. Filter by hours, price, or year to find job-ready Generator Sets near you with the specs you need.
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 2,060 Generator Listings

1 - 25 of 2,060 listings
1 - 25 of 2,060 listings
Featured Item
Used Like NEW Generator 20 KW 2022 Allmand Maxi-Power25 Diesel Portable Trailer Mounted LOW HOURS!! NON DEF!
20 1

Used Like NEW Generator 20 KW 2022 Allmand Maxi-Power25 Diesel Portable Trailer Mounted LOW HOURS!! NON DEF!

$20,000 USD
FREE SHIPPING! (to most US states) NEW! Generator 20 KW 2022 Allmand Maxi-Power25 Diesel Portable Trailer Mounted LOW HOURS!! NOW OFFERING EASY BUSINESS OR PERSONAL FINANCING! WE TAKE...
ConditionUsed
Usage2 Hours
Stock NumberTC1025472104DS200
MLS Number13953991
CategoryGenerator Sets
Last Updated11/22/2025
Location
Orem, UT, US
Sold By
Global Remarketing
2004 Caterpillar D100P4 Generator
12 0

2004 Caterpillar D100P4 Generator

Newly Listed
At auction Dec. 11
2004 Caterpillar D100P4 Generator, s/n OLY00000CD4P00118, Perkins diesel, with 100 KW Generator, (Not Ruuning) (Reads 54 hours) May be subject to ARB Regulations NOTE: This unit is being...
ConditionUsed
Usage54 Hours
MLS Number14003976
CategoryGenerator Sets
Last Updated11/27/2025
Location
Jurupa Valley, CA, US
Listed By
JJ Kane Auctions
Olympian G25F1S Generator
5 0

Olympian G25F1S Generator

Newly Listed
At auction Dec. 10
Olympian G25F1S Generator, (Condition Unknown, Doors Locked, No Key) (Reads 75 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Smock, PA. Inspection ...
ConditionUsed
Usage75 Hours
Stock NumberSP144
MLS Number14003605
CategoryGenerator Sets
Last Updated11/26/2025
Location
Smock, PA, US
Listed By
JJ Kane Auctions
(1 Pallet) Generators (Used)
9 0

(1 Pallet) Generators (Used)

Newly Listed
At auction Dec. 4
(1 Pallet) Generators (Used) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Jurupa Valley, CA. Inspection preview days for this unit are the 2 business...
ConditionUsed
Stock NumberK1516
MLS Number14003032
CategoryGenerator Sets
Last Updated11/26/2025
Location
Jurupa Valley, CA, US
Listed By
JJ Kane Auctions
Kubota GL7000 Generator
10 0

Kubota GL7000 Generator

Newly Listed
At auction Dec. 5
Kubota GL7000 Generator, s/n 665176, Kubota diesel, (Runs, Voltmeter Reflects 120/240 Power) (Reads 1,807 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located...
ConditionUsed
Usage1,807 Hours
Stock NumberHP787
MLS Number14003024
CategoryGenerator Sets
Last Updated11/26/2025
Location
Hawk Point, MO, US
Listed By
JJ Kane Auctions
Multi-Quip WHISPERWATT 7000 Generator
10 0

Multi-Quip WHISPERWATT 7000 Generator

Newly Listed
At auction Dec. 5
Multi-Quip WHISPERWATT 7000 Generator, s/n 5606901, Kubota diesel, (Runs) (Voltmeter Reflects 240/120 Power) (Reads 5,814 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed...
ConditionUsed
Usage5,814 Hours
Stock NumberHP788
MLS Number14003021
CategoryGenerator Sets
Last Updated11/26/2025
Location
Hawk Point, MO, US
Listed By
JJ Kane Auctions
CK5-5H Diesel Generator (Runs) (Reads 130 hours)
7 0

CK5-5H Diesel Generator (Runs) (Reads 130 hours)

Newly Listed
At auction Dec. 5
CK5-5H Diesel Generator (Runs) (Reads 130 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Hawk Point, MO. Inspection preview days for this unit are...
ConditionUsed
Usage130 Hours
Stock NumberHP12Q
MLS Number14003007
CategoryGenerator Sets
Last Updated11/26/2025
Location
Hawk Point, MO, US
Listed By
JJ Kane Auctions
CK5-5H Diesel Generator (Runs) (Reads 112 hours)
7 0

CK5-5H Diesel Generator (Runs) (Reads 112 hours)

Newly Listed
At auction Dec. 5
CK5-5H Diesel Generator (Runs) (Reads 112 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Hawk Point, MO. Inspection preview days for this unit are...
ConditionUsed
Usage112 Hours
Stock NumberHP12P
MLS Number14003006
CategoryGenerator Sets
Last Updated11/26/2025
Location
Hawk Point, MO, US
Listed By
JJ Kane Auctions
CK5-5H Diesel Generator (Runs) (Reads 141 hours)
8 0

CK5-5H Diesel Generator (Runs) (Reads 141 hours)

Newly Listed
At auction Dec. 5
CK5-5H Diesel Generator (Runs) (Reads 141 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Hawk Point, MO. Inspection preview days for this unit are...
ConditionUsed
Usage141 Hours
Stock NumberHP12O
MLS Number14003005
CategoryGenerator Sets
Last Updated11/26/2025
Location
Hawk Point, MO, US
Listed By
JJ Kane Auctions
CK5-5H Diesel Generator (Runs) (Reads 87 hours)
7 0

CK5-5H Diesel Generator (Runs) (Reads 87 hours)

Newly Listed
At auction Dec. 5
CK5-5H Diesel Generator (Runs) (Reads 87 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Hawk Point, MO. Inspection preview days for this unit are...
ConditionUsed
Usage87 Hours
Stock NumberHP12N
MLS Number14003004
CategoryGenerator Sets
Last Updated11/26/2025
Location
Hawk Point, MO, US
Listed By
JJ Kane Auctions
CK5-5N Diesel Generator (Not Running
7 0

CK5-5N Diesel Generator (Not Running

Newly Listed
At auction Dec. 5
CK5-5N Diesel Generator (Not Running, Condition Unknown, Fuel Lines Disconnected) (Reads 135 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in Hawk...
ConditionUsed
Usage135 Hours
Stock NumberHP12M
MLS Number14003003
CategoryGenerator Sets
Last Updated11/26/2025
Location
Hawk Point, MO, US
Listed By
JJ Kane Auctions
CK5-5H Diesel Generator (Not Running
7 0

CK5-5H Diesel Generator (Not Running

Newly Listed
At auction Dec. 5
CK5-5H Diesel Generator (Not Running, Condition Unknown, Cranks, Fuel Lines Disconnected) (Reads 115 hours) NOTE: This unit is being sold AS IS/WHERE IS via Timed Auction and is located in...
ConditionUsed
Usage115 Hours
Stock NumberHP12L
MLS Number14003002
CategoryGenerator Sets
Last Updated11/26/2025
Location
Hawk Point, MO, US
Listed By
JJ Kane Auctions
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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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