Buy New & Used Commercial-rated Diesel GeneratorsIndustrial Diesel Generators For Sale
People often ask how and where they can find a place to buy used industrial diesel generators for sale. At Turnkey Industries, we buy and sell diesel generators for commercial use. Consumers have access to an extensive category of diesel power equipment at Turnkey Industries. Ideally, a low-hour used diesel generator set can compete with a new one. When you commit to a thorough selection process, you will get a great used diesel generator that checks all the boxes. At Turnkey Industries, we subject our used diesel generators to a rigorous inspection procedure. We cross-check critical parts of the generator, such as the style of use, number of active hours, maintenance and repair records, EPA details, and manufacturing date.
New - 0 Hours2,500 kWNew Cummins 2500DQKAN Standby Diesel Generator – Tier 2
- Price: $899,500
- Details
New - 0 Hours2,500 kWNew Cummins 2500DQKAN Standby Diesel Generator – Tier 2
- Price: $899,500
- Details
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Commercial & Industrial Diesel Generators for Sale
Searching for reliable commercial diesel generators or durable industrial generators? Turnkey Industries offers a full range of models for sale, from compact 20 kW standby systems to massive 2,000 kW+ prime power machines. Our generators safeguard critical infrastructure, support businesses during power outages, and deliver dependable energy in remote locations. Explore our generator sizing page or consult our experienced team to match solutions to your power needs.
Why Buy a Diesel Generator from Turnkey Industries?
A diesel generator converts diesel fuel into mechanical energy, which an alternator then transforms into electrical energy. These diesel industrial generators provide reliable power when utility grids fail, ensuring continuity for critical operations across industries. At Turnkey Industries, we combine strong brand selection, efficient logistics, and responsive support to deliver dependable gensets tailored to your needs.
Wide Brand Inventory
We stock leading generator brands—including Cummins, Caterpillar, SDMO, and others.
In-Stock Supply
Immediate availability of new, used, and rebuilt diesel generators.
Turnkey Services
Complete solutions: site review, permitting, installation, and commissioning.
Global Delivery
On-time delivery of equipment anywhere in the world.
Dedicated Support
Comprehensive maintenance, OEM parts, and customized service plans.
Used Diesel Generators: Value for Businesses
For many organizations, used diesel generators deliver the perfect balance of price, reliability, and quick access to power. Even in stable markets, outages caused by storms, grid stress, or equipment failure put companies at risk. Choosing used equipment helps businesses remain protected while controlling capital expenses. These units are designed to keep operations running smoothly across commercial and industrial applications, from construction sites to data centers where uninterrupted power is non-negotiable.
Price Savings
Acquire proven equipment powered by durable diesel engines at a significantly reduced cost compared to new models.
Immediate Availability
Pre-tested and inspected units are in stock and for sale, ensuring businesses can secure power solutions without long lead times.
Sustainable and Fuel Efficient
Reusing equipment extends the lifecycle of quality machines, reduces waste, and provides continued fuel-efficient performance.
Flexible Options
Practical for temporary projects, emergency backup, or budget-sensitive needs, used diesel industrial generators provide flexible solutions tailored to unique operational demands.
Are Portable Diesel Generators a Good Option?
Yes. Portable diesel generators—including mobile and towable models—are an excellent choice for businesses that need adaptable power solutions. These versatile diesel generator sets (gensets) provide reliability across multiple generator types, helping organizations minimize downtime while ensuring continuity for critical operations.
Flexibility Across Sites
Mobile and towable diesel generator sets make it easy to transfer power units between jobsites, temporary facilities, and disaster recovery zones. This portability ensures businesses always have the right diesel generator available when and where it is needed.
Long-Term Performance
Built for durability, these machines deliver consistent long-term performance, combining rugged diesel engines with efficient alternators to provide dependable power. Whether powering construction sites or supporting emergency infrastructure, they are designed to keep operations running smoothly.
Noise and Frequency Considerations
Modern portable diesel generators are engineered to reduce noise levels while maintaining stable electrical frequency output. This makes them suitable not only for heavy-duty industrial use but also for sensitive applications like data centers, healthcare facilities, and commercial operations.
What Affects Industrial Diesel Generator Price?
Key factors that influence industrial diesel generator price include kW capacity, age, condition, refurbishment, brand reputation, emissions tier, and required accessories. Understanding these factors helps businesses find the best generator for sale at the right price point.
| Factor | Impact on Price | Notes |
|---|---|---|
| kW Capacity | Higher output increases cost | 20–100 kW vs. 500–2,000 kW+ |
| Hours & Age | Lower hours raise value | Low-hour units are most attractive |
| Refurbishment | Rebuilt machines priced mid-high | Often rival new in performance |
| Brand | Premium OEMs command higher price | Strong resale for Cummins, Cat, etc. |
| Emissions Tier | Higher tiers add cost | Varies by state compliance rules |
| Accessories | ATS, enclosures, tanks add cost | Options vary by site and security requirements |
Typical Diesel Generator Price Ranges by Power Class
Prices shift with market supply and demand, but here are typical ranges for businesses planning purchases:
- 20–100 kW: Telecom, small businesses, and standby applications. Used pricing is competitive.
- 100–500 kW: Common for construction, municipal, and manufacturing facilities needing secure power.
- 500–2,000 kW+: Essential for data centers, hospitals, and other critical infrastructure operations.
How to Choose the Right Size Diesel Generator
Proper sizing ensures efficiency and security for operations. An undersized unit risks outages, while oversizing inflates fuel consumption and purchase price. Begin by listing all equipment loads, noting differences between continuous and surge demand. Add a safety margin of 10–20% to allow for growth and unexpected power needs.
Also evaluate voltage, phase, transfer switch type, and compliance requirements. Sensitive industries may require redundant commercial diesel generators. Site-specific conditions like altitude, ambient temperature, and emissions standards also play a role.
Our experienced team will assist with a detailed load study, helping you choose the right generator size, brand, and configuration. With expert guidance, businesses stay protected, costs remain controlled, and equipment delivers reliable performance.
Diesel Genset Options & Accessories
Every installation is unique. Configure a diesel genset for sale with accessories that enhance usability and protection. Popular features include weather enclosures, ATS systems, and advanced filters. These options improve performance, deliver security, and keep your facility protected.
- Weatherproof & sound-attenuated enclosures
- Sub-base and skid fuel tanks
- Automatic Transfer Switches (ATS)
- Remote monitoring and controls
- Block heaters, battery chargers, and upgraded filters
Maintenance & Lifecycle Support
Whether mobile or stationary, diesel-powered machines require planned maintenance. Partnered service preserves efficiency, extends longevity, and ensures units are ready during power outages. Turnkey Industries offers flexible service options to assist businesses in maintaining compliance and readiness.
- Partnered Service: Oil and filter changes, coolant service, load-bank testing.
- In-House Programs: Train staff to follow OEM schedules, keep accurate records.
Shop Diesel Power Generators with Confidence
At Turnkey Industries, we provide a full catalog of commercial generators and industrial generators for sale. Our company helps you find the right product, compare options, and ensure your operations remain protected. With strong support and a commitment to excellence, we help you find and configure the best generator for your power needs.
FAQs About Commercial & Industrial Diesel Generators
Below are answers to common questions businesses ask when evaluating diesel power solutions. We cover cost drivers, expected service life, suitability for sectors like oil and gas, and the availability of portable and towable options. Use these FAQs to align specifications with your application, budget, and compliance needs—and to determine whether a new, used, or rebuilt unit will provide the best balance of reliability, efficiency, and total cost of ownership.
How much does an industrial diesel generator cost?
Final price depends on kW rating, condition, emissions, brand, and accessories. Our team will help with quotes and help find the right generator.
What’s the lifespan of a commercial diesel generator?
With routine maintenance, units can generate power for decades. Low-hour and rebuilt models are reliable options for long-term use.
Can I use a used diesel generator for oil and gas projects?
Yes. Industrial generators are engineered for demanding duty cycles. We’ll ensure the right features and protection are in place for these industries.
Do you carry portable and towable options?
Yes. We stock mobile diesel generators for rapid deployment to remote locations or multi-site businesses.
FAQs About Commercial & Industrial Diesel Generators
Below are answers to common questions businesses ask when evaluating diesel power solutions. We cover cost drivers, expected service life, suitability for sectors like oil and gas, and the availability of portable and towable options. Use these FAQs to align specifications with your application, budget, and compliance needs—and to determine whether a new, used, or rebuilt unit will provide the best balance of reliability, efficiency, and total cost of ownership.
How much does an industrial diesel generator cost?
Final price depends on kW rating, condition, emissions level, brand, and accessories. Our inventory includes budget-friendly used units as well as premium new systems. Customers can request quotes to compare models across Caterpillar, Cummins, and Kohler. We’ll help you match the right generator set to your budget and application.
What’s the lifespan of a commercial diesel generator?
With routine service and manufacturer-recommended maintenance, commercial generators often last decades. High-quality units from brands like Cummins and Caterpillar are engineered for longevity. Low-hour and rebuilt generators are also strong options for customers seeking dependable long-term use without the cost of brand-new equipment.
Can I use a used diesel generator for oil and gas projects?
Yes. Industrial generators are designed for demanding duty cycles, including critical operations in oil and gas. Our team ensures compliance with industry standards, adds protective enclosures if needed, and helps you select features like continuous power capability or automatic transfer switches for harsh environments.
Do you carry portable and towable options?
Yes. We stock mobile diesel generators for rapid deployment to remote locations, disaster recovery, or municipal outages. Towable generator sets are popular with construction crews, event organizers, and utility contractors who need flexibility to move between job sites.
What industries rely on diesel generators?
Our customers span many industries, including hospitals, data centers, water treatment plants, construction firms, and oil and gas companies. Anywhere uninterrupted power is mission-critical—whether for patient care, municipal water pumps, or financial systems—diesel generators provide reliable backup and continuous power solutions.
What is the role of emissions standards?
EPA Tier ratings drive compliance and efficiency for diesel generators. Modern models are built with advanced technology that delivers lower emissions while maintaining fuel efficiency. Customers balancing environmental compliance with cost can explore both new and used generators to find the right fit.
How do diesel generators produce electricity?
A diesel engine converts fuel into mechanical energy, which an alternator transforms into electrical power. This process supports uninterrupted power for critical operations, whether during outages or in off-grid projects. Our wide selection of generator sets ensures you can find the right kW rating and design for your needs.
Do you sell both new and used diesel generators?
Yes. Our inventory features new and used generators, including rebuilt units that provide a cost-effective alternative with strong reliability. We carry commercial diesel generators for sale from top brands like Cummins, Kohler, and Caterpillar. Each generator undergoes inspection and testing before being offered to customers.
How do I choose the right generator for my business?
Start by defining your load requirements and runtime expectations. Consider whether your application needs continuous power, standby protection for power outages, or mobile deployment. From there, you can search our wide selection of models, review fuel efficiency and service schedules, and consult with our team for expert recommendations.
Ready to Take Action?
Contact us with your power requirements and questions. Our experienced team will recommend the best commercial diesel generator—new, used, or rebuilt—and deliver a solution that keeps your facility protected and efficient.
