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.:
54432001Used Olympian G60F3 Natural Gas Generator – 60 kW Standby Power Generator with Weather Enclosure (Low Hours)
Used- Olympian Natural Gas Generator, Model G60F3. Rated standby power 60 kW, 75 kVA. Weather enclosure. Engine operates at 1,800 RPM. 3/60/120/208V. 163.2 Hours run. Serial# OLY00000JNGD01498, built 2008.
MFR: Olympian
Stock No.:
49317033Used MTU 600 kW Standby (550 kW prime) Diesel Generator Set - Model DS600
Used- MTU 600 kW Standby (550 kW prime) Diesel Generator Set, Model DS600, SN-321178-1-1-0510. MTU 12V1600G80S engine rated 896 HP at 1800 RPM, SN-16701001344, EPA Tier 2 emissions. 3/60/120/208V, 12 lead reconnectable to other voltages. 2000 Amp adjustable main-line circuit breaker. PMG permanent magnet generator. Engine cooling radiator rated 50C/122F ambient. UL listed stationary engine generator assembly. Basler DGC-2020 digital control panel. Battery charger. Coolant heater. Weather enclosure. 1000 gallon sub-base fuel tank with secondary containment. 293 Hrs. Year 2010. 86W x 170L x 144H, 20,000 lbs. Passed load test 6/11/2024.
MFR: MTU Onsite Energy
Stock No.:
54529001Unused Generac SG080 Natural Gas Generator – 80 kW Standby Power System in Sound Attenuated Enclosure
Unused Generac SG080 Natural Gas Generator 80 kW Standby Power System in Sound Attenuated Enclosure. Rated 80kW 100KVA. 3/60/120-208V, 1800 RPM. Driven by a 128hp Generac 4 Cylinder In-Line Motor. 10A UL Battery Charger, Sound Attenuated Enclosure. Serial# 3015646902, Built 2024.
MFR: Generac
Stock No.:
54562001Used Caterpillar 3412 800 kW Diesel Generator Set
Used Caterpillar 800 kW (725 kW prime) Diesel Generator Set. SN-ADJN01024. CAT 3412 engine rated 1180 HP at 1800 RPM, SN-1EZ08710. 3/60/480V, 12 lead reconnectable to other voltages. 1200 Amp main-line circuit breaker. PMG - Permanent magnet generator. EMCP II digital control panel. Battery charger. Coolant heater. Sound attenuated enclosure. sub-base fuel tank with secondary containment. 326 Hours. Year 2006. Load test pending. Overall dimensions 89"W x 207"L x 101"H, 24,000 lbs.
MFR: Cat
Stock No.:
49317060Used Caterpillar 800 kW Diesel Generator Set – CAT 3412, 1180 HP, 480V, 852 Hours, Enclosed with Fuel Tank
Used- Caterpillar Diesel Generator Set, Rated 800 kW (725 kW prime). CAT 3412 engine rated 1180 HP at 1800 RPM, SN-2WJ06072. 3/60/277480V, 6 lead non-reconnectable to other voltages. 2500 Amp main-line circuit breaker. PMG - Permanent magnet generator. EMCP II+ digital control panel. Battery charger. Coolant heater. Sound attenuated enclosure. 1600 gallon sub-base fuel tank. 852 Hours. Year 2000.
MFR: Caterpillar
Stock No.:
54376001Used Olympian D90P1 Trailer-Mounted Diesel Generator – 90 kW, Perkins Engine, 258 Hours
Used- Olympian Trailered Diesel Generator, Model D90P1. Rated 90 kW, 112.5 KVA, 82.3 Prime Kw (103 Prime KVA). Rated 3/60/277/480V 1600rpm. Perkins 4-Cycle Motor. Mounted on a custom built trailer. 258 hours, Serial # OLY00000KNPS02059, Built 2005.
MFR: Olympian
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.