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.
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54601001Used CAT Solar Turbines Centaur 40 Natural Gas Turbine Power Package – Approx. 3.7 MW
Used- Cat Solar Turbines Turbine Package. Approximate output of 3.5 MW per unit/Approximately 7 MW total. Natural gas powered. Consists of (2) Solar Turbine Model Centaur 40; Exhaust systems; Gas-fired burner systems; Associated electrical infrastructure. Configured for venting or integration with steam generation systems. Serial# HG85083 and HG85093. Reported approximate 30,000 operating hours.
MFR: Solar
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54620002Used Jenbacher JGS-416 1.127 MW Natural Gas Generator – 4,160V Enclosed Power Package with Switchgear
Used- Jenbacher Natural Gas Generator Package, Model JGS-416. Rated 1.127 MW. Approximately 96% generator efficiency. Includes fully enclosed transportable weatherproof building and switchgear. 1800 RPM. 1573 bhp motor. 60hz/4160V. Built 2011. Reported 67,000 hours.
MFR: Jenbacher
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54718001Used Kato 1 MW Natural Gas Generator with Waukesha L7042GSI Engine
Used- Kato Natural Gas Generator Package, Rated 1MW. Powered by a Waukesha Model L7042GSI engine. Components include: Exco Industrial Switchgear; ABB SACE L2895 1600 amp breaker/switch; McPherson ADVR-083 regulator; Woodward 2301A Control system; Altronic CPU-95 Ignition System; Altronic CPU-95 Enhanced Display Module; NewMar Battery Charger; and cooling system. 3ph, 480V, 1200 RPM. Rebuilt by Reagan Power and Compression in 2025. Reported 500 hours since rebuild.
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54718002Used Ideal Electric 1 MW Natural Gas Generator with Waukesha L7042GSI Engine
Used- Ideal Electric 1MW Natural Gas Generator Package. Open Skid. Waukesha L7042GSI Engine. Deep Sea Electronics Model 7310 MKII controller. Woodward 2301A governor. Larson Electronics 1600 amp, 600V manual breaker. Custom muffler system. Cooling system. 3/60/480. Fully Rebuilt by Pelstar in 2025. Reported 500 hours since rebuild.
MFR: Ideal Electric
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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.
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54701001Used 2023 Ingeteam INGECON H2 11.24 MW Hydrogen Electrolyzer Power System – Dual FSK E12000 Stations with IGBT Rectifiers
Used- Ingeteam INGECON H2 Power Station System. Consists of: (2) model FSK E12000 power stations and (4) H2 E-lyzer IGBT rectifiers with integrated liquid cooling. Designed for an 11.24 MW hydrogen electrolyzer system. Each skid-mounted station includes medium-voltage switchgear, step-down transformer, auxiliary transformer, low-voltage panel, and integrated controls. Maximum DC voltage 1,300 V, nominal DC current 4,400 amps, maximum DC current 7,700 amps, and AC input power of 3,000 kVA per station. Rated medium-voltage input 20.78 kV. Features 97% rectifier efficiency, adjustable power factor, less than 3% harmonic distortion, and Modbus/TCP or Profibus communications. Outdoor-rated with operating temperatures from -20 C to +40 C. Each station measures approximately 37' 9" L x 6' 11" W x 13' 11" H. Suitable for hydrogen production, industrial electrolysis, renewable energy hydrogen systems, and high-capacity AC-to-DC power conversion applications. Built 2023.
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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.
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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.