Used Generators for Sale
Used generators are industrial power systems designed to produce electricity for continuous operation, backup power, or on-site energy generation. These systems are widely used across manufacturing, energy, chemical processing, and utilities where reliable power supply is critical. Generators support operations ranging from emergency backup to full-scale power generation in remote or grid-independent environments. Aaron Equipment offers used generators for sale in a variety of configurations, fuel types, and capacities to meet specific power requirements and operational demands. Browse available inventory below or explore generator types to find equipment aligned with your application.
Stock No.:
53393004Used – Clark Centrifugal Compressor Model C/T 20341, Size 2M – 5089 CFM, 9 Impellers, w/ GE 1750 HP Motor
Used- Clark Centrifugal Compressor, Model C/T 20341, Size 2M. 9 Impellers. Carbon Steel. 5089CFM inlet capacity, 9100 rpm maximum continuous speed. 315 degrees F maximum operating temperature, 225psi inlet pressure and 270psi discharge pressure. 8", 12" Top Openings. Western Gear Box 1-5.1111:1 Ratio. Repaired by Dresser-Rand in 2006. Serial# 2-9-2610. Includes GE Custom 8000 Induction Motor Rated 1750hp 3/60/4000v 1786rpm, with enclosure.
MFR: Clark
Stock No.:
53459010Used MAN Diesel & Turbo SE DK080/250R Diesel Steam Turbine – 40,554 kW
Used MAN Diesel & Turbo SE DK080/250R Diesel Steam Turbine 40,554 kW; speed 4648 rpm; Inlet pressure Normal/Max 97/101 bar, (Normal/Max 1455/1515 PSI). Inlet Temperature Normal/Max 525/535 ?; (Normal/Max 977/995 F). includes HTAC extractor, Sulter Dalian Condensate Pump, and additional infrastructure. New year 2018, installed in 2020, started up in production in October 2020. Was taken out of service in July 2022, 13993 hours in service. Overall dimensions 5900 mm x 5330 mm x 5170 mm high (192" x 173" x 168" high). Weight 100 tonnes (45454 lbs.). Our freight specialists can assist you with door to door transportation and all customs documents needed to make the process go as smoothly as possible.
Stock No.:
53459011MAN Diesel & Turbo SE Model DK080/250R Diesel Steam Turbine
MAN Diesel & Turbo SE Model DK080/250R Diesel Steam Turbine 40554 KW; speed 4648 rpm; Inlet pressure Normal/Max 97/101 bar, (Normal/Max 1455/1515 PSI). Inlet Temperature Normal/Max 525/535 ?; (Normal/Max 977/995 F). includes HTAC extractor, Sulter Dalian Condensate Pump, and additional infrastructure. New year 2018, installed in 2020, started up in production in October 2020. Was taken out of service in July 2022, 13993 hours in service. Overall dimensions 5900 mm x 5330 mm x 5170 mm high (192" x 173" x 168" high). Weight 100 tonnes (45454 lbs.). Our freight specialists can assist you with door to door transportation and all customs documents needed to make the process go as smoothly as possible.
Stock No.:
49317050Used Cummins 750 kW Diesel Generator – DQFAA, Tier 2, 480V Capable, UL2085 Tank, Passed Load Test
Used-750 kW standby (680 kW prime) Cummins diesel generator set, model DQFAA, SN-H070098040. Cummins QST30-G5 engine rated 1490 HP at 1800 RPM, SN-37229540, EPA Tier 2 emissions. 3/60/120/208V, 12 lead reconnectable to 480V and other voltages. 2500 Amp 100% rated main-line circuit breaker. PMG permanent magnet generator. Oversized 1040 kW rated generator end. Engine cooling radiator rated 50C/122F ambient. UL 2200 listed stationary engine-generator-assembly. PowerCommand 2100 digital control panel. EnerGenius battery charger 10 amp 120/208/240V. Coolant heater 208/240/480V. Aluminum sound attenuated enclosure. 3600 gallon UL2085 sub-base fuel tank, with secondary containment. 792 Hours. Year 2007. Overall dimensions 113W x 341L x 165H, 60,000 lbs. (storage trailer in photo not included) Passed load test 2/11/2025.
MFR: Cummins
Stock No.:
53126014OG-375 oxygen concentrator
Used- OG-375 oxygen concentrator Industrial design uses steel zeolite towers and rebuildable solenoid valves for a easy to maintain system that will never wear out or become obsolete. Features Produces 375 SCFH oxygen at up to 45 PSI Industrial heavy-duty design and quality oxygen concentrator Energy efficient oxygen concentrators require less compressed air for operation High oxygen outlet pressure 45 PSI standard, up to 65 PSI outlet pressure available Completely rebuild-able and easy to maintain design will offer many years of operation More Information Weight 1.35 lbs (0.61 kg) Dimensions 30" x 36" x 84" (76.2 x 91.4 x 213.4 cm) LxWxH Warranty 1 Year Max Pressure 45 PSI (3.16 Bar) Higher pressure systems available Oxygen Connection 3/8-inch NPT Inlet/Outlet Connections 3/8-inch NPT Integrated Compressor No 68 CFM @ 90 PSI required Oxygen Flow Rate 176.98 LPM (375 SCFH) The OG-375 will require an air tank and an oxygen tank for proper operation.
Stock No.:
53133001Element 1 M-Series M13 Hydrogen Generator
Used- Element 1 M-Series M13 Hydrogen Generator. Output range 1150-1440 sLm. Minimum rated output 1313 sLm (170kg/day). Hydrogen delivery pressure10-30 psig from buffer tanks. Methanol/Water blend ratio. Woodward LCEM controls. HMI. Mounted on forkliftable frame. Approximately 40 hours.
Stock No.:
54413001Used Nel Hydrogen Generator Model C30 – High-Purity 30 Nm³/h Hydrogen Production System (30 barg Output)
Used- Nel Hydrogen Generator, Model C30. Rated 30 Nm^3/hour (1140 SCFH) at 435 psig (30 barg), with 99.9998% purity. 3000 kPa (30 barg) hydrogen output pressure. 5 to 60 degrees C (41 to 140 degrees F) hydrogen temperature. 15.9 Nm^3/hour oxygen capacity. 5 to 60 degrees C (41 to 140 degrees F) oxygen temperature. 3/60/240V. Built 2019.
Stock No.:
45053456Parker Balston Model DB-5 Nitrogen Generator System
Used- Parker Balston Model DB-5 Nitrogen Generator System. Designed to convert compressed air supply into high purity compressed nitrogen. 60-100 degrees F temperature range. 1/2" NPT inlet/outlet. 110-140psig Inlet Pressure. 80psig outlet pressure. 50/60hz, 120v requirements.
MFR: Parker
Types of Used Generators Available
Aaron Equipment offers a range of used generators designed to support power generation, backup power, and energy recovery applications:
Cogeneration Plants – Combined heat and power (CHP) systems that generate electricity while capturing and utilizing waste heat for increased efficiency.
Diesel Fuel & Natural Gas Fuel Generators – Versatile generators powered by diesel or natural gas, commonly used for standby, prime, or continuous power applications.
Steam Turbine Generators – Systems that convert steam energy into electrical power, typically used in large-scale industrial and utility operations.
Gas Turbine Generators – High-capacity generators that use combustion turbines for efficient power generation in industrial and energy sectors.
Miscellaneous Generators – Various generator systems and configurations designed to support specialized or unique power generation applications.
Generator Applications & Industry Uses
Used generators are essential across industries where reliable electrical power is required for operations, backup, or energy independence. Common applications include:
Manufacturing Facilities: Backup and primary power supply for continuous production
Chemical Processing: Power generation for critical processing systems and utilities
Energy & Utilities: On-site and distributed power generation systems
Oil & Gas: Remote power supply for drilling and processing operations
Data Centers & Infrastructure: Emergency backup power to maintain uptime
These systems help ensure operational continuity, reduce downtime, and provide energy flexibility across industrial environments.
Used Generator Buying Considerations
When selecting a used generator, it is important to evaluate both power requirements and equipment condition:
Power Output (kW/MW): Match generator capacity to load requirements
Fuel Type: Diesel, natural gas, or turbine-based depending on availability and cost
Duty Cycle: Standby, prime, or continuous operation requirements
Efficiency & Emissions: Evaluate fuel consumption and regulatory compliance
Control Systems: Assess automation, monitoring, and integration capabilities
Condition & Maintenance History: Review service records and operational hours
Why Buy Used Generators
Buying used generators provides a cost-effective solution for securing reliable power without the long lead times of new systems. Used generators offer proven performance and are often available for immediate deployment, helping facilities maintain uptime and reduce capital investment.
Aaron Equipment sources high-quality generator systems from leading manufacturers, providing dependable power solutions for a wide range of industrial applications.
Sell Your Used Generators
Aaron Equipment actively purchases surplus generators, including diesel, gas turbine, and cogeneration systems. Whether upgrading equipment or decommissioning assets, our team can help maximize value.
An industrial generator is a system that converts mechanical energy into electrical power. It is used to supply electricity for industrial operations, either as a primary power source or backup system.
Common types include diesel generators, natural gas generators, steam turbine generators, gas turbine generators, and cogeneration systems. Each type is suited for different power capacities and applications.
Choosing the right generator depends on required power output, fuel availability, operating conditions, and whether the system will be used for standby or continuous operation.
Yes. Used generators are built for long service life and can remain highly reliable when properly maintained, inspected, and tested prior to purchase.
Generators are used in manufacturing, chemical processing, energy production, oil and gas, and infrastructure sectors where reliable power is essential.