New & Used Diesel Generators for Sale
Discover the ideal diesel generator for your commercial or industrial needs. Unmatched reliability, efficiency, and expert support.
Why Choose Diesel for Your Critical Power Needs?
Diesel generators are the cornerstone of reliable power generation for businesses and industries worldwide. Their proven performance, fuel efficiency, and robust construction make them the preferred choice for both standby and prime power applications.
At Generator Source, we understand the critical role a dependable power supply plays in your operations. We specialize in providing a comprehensive selection of high-quality new, surplus, and used industrial diesel generators designed to meet the demands of commercial, industrial, and mission-critical environments.
What Sets Generator Source Apart
Extensive Inventory
Access a wide range of new and rigorously inspected surplus diesel generators from top manufacturers.
Expert Consultation
Our knowledgeable team provides personalized guidance to help you select the perfect generator size and type.
Rigorous Quality Assurance
Every generator undergoes thorough testing and inspection to ensure peak performance and reliability.
Comprehensive Support
From pre-sale consultation to ongoing maintenance and parts, we’re your long-term power partner.
Key Considerations When Buying a Diesel Generator
Sizing Your Diesel Generator (kW vs. kVA)
Proper generator sizing is crucial to avoid underpowering or oversizing your operations:
- kW (Kilowatts): Represents the real power, primarily for resistive loads (e.g., heating, lighting).
- kVA (Kilovolt-Amperes): Represents apparent power, the total power demand including both real and reactive loads (e.g., motors, transformers).
- Understanding Your Load: Consider both your continuous running load and your peak starting load (inrush current) when sizing.
Typical Power Requirements:
- Small Commercial: 50 kW – 200 kW (e.g., retail, small office buildings)
- Medium Industrial/Healthcare: 200 kW – 1000 kW (e.g., manufacturing plants, hospitals)
- Large Industrial/Data Centers: 1000 kW+ (e.g., large data centers, utilities, mining operations)
Types of Diesel Generators for Industrial Use
Standby Generators
Automatically activate upon utility power failure, providing temporary backup power until grid power is restored. Ideal for critical systems in hospitals, data centers, and commercial buildings.
Prime Generators
Designed to be the primary source of power for continuous operation in remote locations or off-grid sites where utility power is unavailable.
Continuous Generators
Similar to prime power but rated for even longer, constant-load operation without interruption. Often used in utility-scale or industrial applications where consistent power is paramount.
Key Features & Components to Look For
Engine Manufacturer: Reputable brands like Cummins, Caterpillar, Kohler, Generac, MTU, Detroit Diesel, and John Deere are known for durability and performance.
Alternator: High-quality alternators ensure stable voltage and frequency output.
Control Panel: Modern digital control panels offer advanced monitoring, diagnostics, and remote management capabilities.
Enclosure: Sound-attenuated (silent) or weather-protective enclosures are essential for noise reduction and protection from the elements.
Fuel Tank Capacity: Determines run-time at a given load; critical for extended operations.
Automatic Transfer Switch (ATS): An ATS automatically detects power outages and seamlessly transfers the load to the generator, then back to utility power when restored. Essential for standby applications.
New vs. High-Quality Surplus/Used Diesel Generators
We offer both new and meticulously inspected surplus/used diesel generators, providing options to fit various budgets and timelines.
New Diesel Generators
Benefits: Latest technology, full manufacturer warranty, potentially longer lifespan for new components.
Considerations: Higher initial cost, potential lead times for custom orders.
High-Quality Surplus & Used Diesel Generators
Benefits: Significant cost savings, immediate availability, proven reliability, reduced environmental impact.
Generator Source Assurance: Our used generators undergo an extensive 31-point inspection, comprehensive load bank testing to verify full power output.
Industrial Applications We Serve
Agriculture
Powering irrigation, storage, and essential farm equipment.
Airports
Ensuring uninterrupted operations for runways, terminals, and air traffic control.
Cities / Municipalities
Safeguarding critical infrastructure and public services during outages.
Cold Storage & Retail
Maintaining temperature-controlled environments for perishable goods.
Commercial Real Estate
Ensuring tenant safety and compliance with backup power regulations for multi-story buildings.
Construction
Powering heavy machinery, cranes, and essential tools on job sites.
Data Centers
Providing critical backup power for uninterrupted data operations.
Hospitality
Ensuring guest experiences remain unaffected during outages.
Hospitals
Ensuring continuous power for life-saving medical equipment.
Manufacturing / Warehouse
Ensuring production lines and warehouse operations stay online.
Mining
Powering heavy-duty equipment and remote operations in harsh environments.
Oil & Gas
Supporting critical operations in exploration, drilling, and refining.
Need help finding a generator?
Not sure where to start with your power system? Our team is here to help. Generator projects involve many factors – from sizing and site preparation to compliance – so it’s wise to consult with our experts (and your electrical engineers) early in the process. We can assist in selecting the optimal unit or paralleling setup and ensure all technical requirements are met before purchase and installation.
Our Values
Our mission is to provide reliable power solutions that empower businesses across industries, ensuring seamless operations with unmatched expertise and quality.
Since our founding over four decades ago, Generator Source has grown to become the country’s largest buyer and seller of commercial generators, with branches and service teams ready to deliver power solutions nationwide.
People First
We prioritize relationships, building trust and respect in every customer and team interaction.
Quality of work
We hold ourselves to the highest standards, delivering reliable power solutions backed by rigorous testing.
Dedication
We go the extra mile to support our customers and stand behind every generator we service and sell.
Expertise
With 50 years of industry experience, our team brings unmatched knowledge to every project.
Diesel Generators for Sale
Showing 30 of 281 results
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Three-Phase
Fuel: Diesel
Built: 2011
Volts: 277/480v
Hours: 279
Unit #: 091800
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Three-Phase
Fuel: Diesel
Built: 2011
Volts: 277/480v
Hours: 273
Unit #: 091801
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Three-Phase
Fuel: Diesel
Built: 2013
Volts: 277/480v
Hours: 5
Unit #: 091773
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Three-Phase
Fuel: Diesel
Built: 2000
Volts: 277/480v
Hours: 215
Unit #: 091357
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Three-Phase
Fuel: Diesel
Built: 2008
Volts: 277/480v
Hours: 156
Unit #: 090622
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Three-Phase
Fuel: Diesel
Built: 2008
Volts: 277/480v
Hours: 92
Unit #: 090620
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Three-Phase
Fuel: Diesel
Built: 2008
Volts: 277/480v
Hours: 88
Unit #: 090621
