Electrical Trader carries surplus and used generators ranging from portable standby units to industrial-grade diesel and gas-powered generator sets for commercial and utility applications. Our rotating inventory includes units from leading manufacturers including Caterpillar, Cummins, Kohler, and Generac, spanning output ranges from 20kW to several MW.

 

Finding a reliable used generator at a fair price takes time — sourcing from utility auctions, estate sales, and equipment liquidations is our specialty. Each unit in our inventory is documented with nameplate data, condition notes, and available service history. Whether you need a standby generator for a critical facility, a rental-fleet replacement, or a prime-power unit for a remote site, our in-stock surplus inventory ships faster and costs less than new.

 

Filter by output rating, fuel type, or manufacturer using the catalog below. Can't find what you need? Submit a sourcing request and we'll search our network for your specification.

48 products

How to Choose the Right Power Generation Equipment


Choosing the right power generation equipment is one of the most important steps in ensuring reliable power for your business, project, or facility. The decision goes beyond simply picking a generator — it involves evaluating your power needs, fuel options, installation requirements, and long-term maintenance so that the system you invest in delivers both performance and value.


The first consideration is your actual power demand. Every application has different requirements, whether it’s a small backup generator for emergency use or a large industrial system running around the clock. Understanding the total load you need to support, and whether you are working with single-phase or three-phase power, will help narrow down the right equipment. Sizing your generator properly prevents both underperformance and costly oversizing.


Fuel choice is another critical factor. Diesel generators remain one of the most common options thanks to their durability and ability to handle heavy loads, while natural gas generators are often preferred for continuous operation because they burn cleaner and can tie into existing gas lines. For mobile or short-term applications, gasoline or propane-powered units provide flexibility. Each option has trade-offs in cost, availability, and emissions, so the best choice depends on how and where you plan to operate.


Once you’ve determined your capacity and fuel source, the next step is deciding between new, used, or reconditioned equipment. New generators come with full warranties and the latest technology, making them ideal for mission-critical applications. Used and reconditioned units, however, can provide excellent value if they have been properly inspected and tested. Many businesses find that reconditioned equipment offers the right balance of affordability and reliability, particularly when backed by a warranty.


Compatibility and features should also play a role in your decision. Voltage ratings must match your existing electrical system, and you’ll need to decide between manual or automatic transfer switches depending on how quickly you want backup power to activate during an outage. Increasingly, power generation equipment is also available with smart controls that allow for remote monitoring, system alerts, and integration with SCADA networks — features that improve efficiency and reduce downtime.


Finally, don’t overlook installation and maintenance. A system is only as reliable as its setup and ongoing care. Planning for professional installation ensures your generator is configured correctly for safety and performance. Regular maintenance — including oil changes, inspections, and load testing — helps extend equipment life and avoid unexpected failures. Environmental factors, such as whether the unit will be installed indoors, outdoors, or in a harsh climate, should also guide your final choice.


By taking the time to evaluate these factors, you can select a power generation system that fits your budget, aligns with your operational needs, and provides dependable electricity when you need it most. A well-chosen generator is not just a piece of equipment — it’s an investment in security, productivity, and peace of mind.