Industrial & Commercial Generators for Sale
An industrial generator is an alternator driven by an engine, usually diesel or natural gas, that makes electric power for job sites and standby backup at buildings. Shop used industrial and commercial generators: towable diesel, standby and portable units from Caterpillar, Cummins and Generac. Local pickup.
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Industrial and commercial generators here come from contractors, rental yards and facilities replacing standby units. You will find towable diesel sets, skid-mounted gensets, standby units with transfer switches, portable gas generators and light towers. Every listing is local pickup: you inspect it, run it and pay at the seller's yard.
What to look for in used generators
- Rated kW and voltage configuration, and whether it can be reconnected for your phase and voltage.
- Hours, service records and the date of the last load test.
- Engine make (Cat, Cummins, Kubota, Perkins, John Deere) and any oil or coolant leaks.
- Alternator condition, control panel and whether all gauges and shutdowns work.
- On towables: fuel tank, trailer condition, tires, lights and title.
Popular brands
Common makes: Caterpillar, Cummins, Generac, Kohler, Multiquip, Wacker Neuson, Doosan, Atlas Copco.
Popular models
Specs and used prices: Caterpillar XQ60, Cummins C150D6, Honda EU7000iS, Ingersoll Rand G25, Multiquip DCA25SSIU4F, Multiquip DCA70SSIU4F.
What used generators sell for
Used portable gas generators typically list in the hundreds to low thousands. Towable diesel sets in the 20 to 100 kW range usually run from the high single-digit thousands to the tens of thousands depending on hours and tier. Read the full price guide.
Buyer's guides
Questions buyers ask
- How many hours is too many on a diesel generator?
- Industrial diesel sets often run 20,000 hours or more with maintenance. What matters more is service history, load history and whether it was run regularly or sat. Low-hour standby units that were never exercised can be worse than higher-hour rental units.
- Prime or standby rating?
- Standby is the maximum for emergency use a few hundred hours a year. Prime is the continuous rating for daily use. If you will run it on a job site, buy on the prime rating.
- How do I check a used generator before buying?
- Cold start it, watch it come to speed and stabilize, check voltage and frequency at the panel, then put a load on it if the seller has a load bank or a big enough motor. Look for blowby at the breather.
- Do I need a transfer switch?
- For standby power at a building, yes, and it must be installed by an electrician. For job-site power you plug into the panel directly.
Also browse used compressors, used pressure washers and used fleet trucks.
Have generators to sell? List it free and hand it off locally.