As demand for reliable backup power increases across the industrial and commercial sectors, companies are seeking cost-effective solutions in preowned generators. The market for these units is expanding rapidly, leaving facility operators to decide on a partner with extensive inventory, strong support services and a proven track record for meeting set standards. So, who are the top used industrial generator suppliers in the U.S.?
1. Woodstock Power
Woodstock Power is a Philadelphia-based industrial generator supplier that specializes in reliable used commercial equipment for various sectors. Its inventory comprises well-known brands and supports natural gas, diesel and propane fuel types. Clients can make the right selection based on their energy needs and local emissions requirements.
The enterprise buys and sells generators, provides turnkey solutions and supplies all the essential components at a much lower cost than new units. Woodstock Power’s expert team will help you measure what size unit you need, install, maintain and decommission based on your project needs.
Key Features
- Vast inventory of natural gas, diesel and propane commercial generators
- Solutions fully meet current emissions standards and tier regulations
- Expert project consultation for facility managers and procurement specialists
- Headquartered in Philadelphia, PA, with nationwide operations
2. Power Generation Enterprises
Power Generation Enterprises maintains an inventory of over 1,600 new and used industrial generators. They from 10 kilowatts (kW) to over 2,500 kW, with diesel, natural gas and portable configurations. It stocks renowned brands like Caterpillar, John Deere, Kohler and MTU at its Santa Clarita, California, facility, and ships equipment nationwide and to over 40 countries.
This supplier offers expert guidance in procuring the right equipment for your operations at the right price. Its sales associates will source whatever you are looking for and help you maximize market exposure and value if you are interested in selling.
Key Features
- Over 1,600 new and used generators in stock, from 10 kW to over 2,500 kW
- Brands include Cummins, Caterpillar, Kohler and more
- Nationwide shipping and international exports
- Fully inspected and turnkey power solutions
3. Worldwide Power Products
Houston-based Worldwide Power Products is one of the leading used industrial generator suppliers in the U.S. Its extensive inventory includes used, refurbished and new generators, including diesel and natural gas units ranging from 20 kW to 2 megawatts (MW). It can also be a parallel unit for up to 10 MW.
Worldwide Power Products’ services comprise sales, rental, custom-built models, and maintenance and repairs, all delivered by its experienced in-house specialists. It has built a positive reputation through its customer-centric approach, diverse offerings, rapid fulfillment and nationwide distribution, and 24-hour emergency support.
Key Features
- Vast inventory of new, used and refurbished generators
- Custom power module design and in-house engineering
- Nationwide sales, distribution and emergency repair services
- 24-hour support and turnkey solutions
4. NineX Power Solutions
NineX Power Solutions is a prominent supplier of used and new industrial generators for commercial, offshore and backup power needs. Its inventory includes diesel, natural gas, marine and offshore units, which serve an array of sectors from onshore sites to maritime projects.
The company carefully sources and tests each generator to ensure it is highly functional and reliable before resale. NineX Power Solutions’ expert team creates a seamless purchasing process, offering invaluable guidance and after-sales support. As a full-service partner, it handles shipment logistics, installation and ongoing maintenance for nationwide customers.
Key Features
- Diverse inventory of diesel, natural gas and marine generators
- Thorough quality testing and expert guidance
- Nationwide distribution and rapid shipping
- Customized solutions for specialized industries
5. United Rentals
United Rentals offers one of the most extensive fleets of equipment rentals and sales in the U.S. and is a leader in the used generator market. Its diesel and natural gas-powered units are suitable for commercial, industrial and backup power applications. Additionally, its inventory updates in real time, enabling more accurate and efficient transactions.
The providers offer nationwide services and deliver equipment from top brands. Among its key services are flexible rental terms, preowned and surplus generator sales, ongoing maintenance and inspections, rapid fulfillment, and technical support.
Key Features
- Large inventory of high-quality used generators
- Nationwide delivery and support
- Technical assistance and maintenance support included
- Flexible rental and purchase options
Methodology: How This List Was Formed
To compile this list, it was necessary to identify the most reputable and positively reviewed used industrial generator suppliers in the U.S. Simple web searches revealed top-ranking entities across various sectors. Each one met specific criteria as follows:
- A robust used equipment inventory
- Experience
- Industry-recognized certifications
- National presence
- Customer testimonials, reviews and ratings
Only those with a diverse inventory, a comprehensive suite of services and transparent business processes made the list. Each summary pulls information from brand websites and customer reviews, enabling you to make an informed decision.
Comparing the Best Backup Power Solutions for Contractors
The best backup power solutions for contractors are often guaranteed to be reliable. Even with the top-rated U.S. suppliers at your fingertips, it is crucial to compare their inventory, core services and specializations to ensure that they can meet your needs.
| Company | Inventory Range | Core Services | Specializations |
| Woodstock Power | 25kW to 25,000 kW+ | Used sales, buyback and turnkey solutions | Used generator expertise and guarantee |
| Power Generation Enterprises | 10kW to 2500kW+ | New and used sales and exports | Volume and variety |
| Worldwide Power Products | 20kW to 10MW | Sales and rental service | Engineering and custom power models |
| NineX Power Solutions | Full-size, diesel/marine | New and used equipment, and marine and offshore equipment | Versatility and support |
| United Rentals | Various types, primarily diesel | Sales, rental and rapid delivery | Nationwide coverage and reliability |
Frequently Asked Questions
Why buy used generators for commercial and industrial use instead of purchasing new units?
Selecting a used generator over a new one delivers substantial cost savings. Used units are also usually available for rapid delivery, which is critical during unexpected outages or urgent projects.
Suppliers also often have a surplus of used units. This enables businesses to obtain premium brands and models that meet their industrial needs without incurring high initial investment. For many project managers and facility operators, it is a practical, cost-effective choice.
How do suppliers ensure the reliability and quality of used industrial generators before reselling them?
Just because a generator is used does not mean it is damaged. Reputable suppliers rigorously inspect, test and refurbish equipment for industrial purposes before resale. The technicians assess the generator for wear, damage and operational capacity and conduct load testing to confirm its efficiency.
They also check, repair and replace any damaged components, such as wiring, bearings and control panels. Additionally, suppliers will verify the machine’s service history and warranties to give you peace of mind. This meticulous approach ensures you receive a product that is reliable, safe and like new.
What types of backup power solutions do leading used generator suppliers offer for specialized settings?
The top used industrial generator suppliers in the U.S. offer various backup solutions tailored for hospitals, data center, water treatment facilities and manufacturing plants. The equipment usually ranges from diesel to natural gas and portable generators, and from small kW ratings to large MW units.
Suppliers may customize the equipment with remote monitoring, sound attenuation, automatic transfer switches and fuel management systems to enhance functionality. Many also provide installation, maintenance and emergency repair services so your operations remain powered within minimal downtime.
Powering Success in the Preowned Generator Marketplace
When you buy used generators for commercial and industrial applications, you receive high-performance equipment at a fraction of the cost. The top-rated suppliers in the U.S. provide preowned units from reputable brands, ensuring each component functions properly for seamless operations.