Custom Diesel Generators
Finding a diesel generator is easy when you shop with PDG. Our selection of diesel generators is designed to fit any number of applications. Whether you need a tier 4 prime duty diesel generator or a custom power package, PDG has the diesel generator for sale to fit your power requirements and specifications.
Powerhouse Diesel Generators is a premier supplier of custom power solutions. If you need a diesel-powered generator and can't find what you are looking for on our website, your very own customized power package is just a phone call away. Whether you need prime, mobile or standby diesel generators, PDG can build what you need.
What Is the Best Diesel Generator For You?
When selecting the best diesel generator for your application, it's important to know the varieties available to you. Most generators will be listed under one of three categories:
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Prime
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Standby
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Mobile
Review each category to determine which diesel generator is best for you.
Prime Diesel Generators
The most common variety, prime diesel generators are what most people think of when they think about generators in general. A prime diesel generator provides power for prolonged use over days, weeks and months at a time. Another difference between prime and standby diesel generators is that prime generators meet higher emissions requirements.
Standby Diesel Generators
Used for backup power in emergencies, standby diesel generators are great as power source alternatives in case of major outages or electrical faults.
Portable Diesel Generators
As the name implies, portable diesel generators are designed for ease of use and mobility on ships and job sites. Portable generators are sometimes more compact than prime or standby diesel generators.
Which Industries Use Diesel Generators?
Industrial applications require reliable energy solutions. That's why PDG is a trusted source for diesel generators regardless of the project or application. Our generators consider dozens of power requirements and use cases to provide the best cost-to-energy ratio. Our diesel generators are used by dozens of industries, including:
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Oil and Gas
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Heavy Machinery
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Marine
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Mining
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Automotive
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Agriculture
Frequently Asked Questions About Diesel Generators
What is a diesel generator?
A diesel generator pairs a diesel engine with an alternator to convert diesel fuel into AC electrical power. They're available from compact portable units to large industrial gensets exceeding 2,000 kW, making them the go-to power solution for commercial facilities, job sites, data centers, and critical infrastructure. PDG's diesel generators for sale range from 8 kW to 600 kW, with custom configurations available beyond that.
How long can a diesel generator run continuously?
Standby diesel generators are designed to run for days or weeks during grid outages, limited only by fuel supply. Prime power diesel generators are rated for continuous 24/7 operation, with scheduled maintenance intervals typically every 250–500 hours. One important note: avoid running any diesel generator at less than 30–40% of rated load for extended periods, as this can cause wet stacking — carbon buildup in the exhaust system from unburned fuel.
What is a Tier 4 diesel generator?
Tier 4 Final is the EPA's most stringent emissions standard for non-road diesel engines, reducing NOx and particulate matter by up to 90% compared to older units. Tier 4 compliance is required for generators used in mobile or prime power applications and is increasingly mandated on municipal, federal, and commercial construction job sites. PDG stocks Tier 4 certified generators from Kubota, Yanmar, Perkins, Isuzu, and Volvo.
Is a diesel generator better than a gas generator?
For commercial and industrial applications, yes. Diesel generators offer 30–50% better fuel efficiency, significantly longer service life (often 20,000+ hours), lower operating costs per kilowatt-hour, and safer bulk fuel storage due to diesel's higher flash point. Gas generators have a lower upfront cost but are better suited for light, occasional use — not sustained commercial operation.
What's the difference between a standby and a prime power diesel generator?
Standby generators are permanently installed and designed to start automatically when the grid fails — they're rated for limited annual hours and serve as a backup to utility power. Prime power generators serve as the primary electricity source, rated for continuous full-load operation 24/7. Prime power units are common in remote job sites, mining operations, oil fields, and off-grid industrial facilities. PDG carries both, including EPA Tier 4 prime power generators for regulated applications.
Can I get a custom diesel generator built to my specifications?
Yes — custom packages are one of PDG's core specialties. Common configurations include specific voltage and phase output, sound-attenuated or weatherproof enclosures, extended sub-base fuel tanks, automatic transfer switch integration, trailer-mounted mobile gensets, and paralleling setups for scalable redundant power. Contact our engineering team to discuss your requirements.
Custom Diesel Generators for Sale
Can't find exactly what you need? Powerhouse Diesel Generators can craft a custom solution that meets all of your needs. Custom power solutions don't have to be overly costly with complex parts requiring a ton of maintenance. Working with our design team, we will speak to you about your power requirements, assess how you would like your diesel generator to be packaged and develop and fabricate any custom mounting or installation hardware.
Contact PDG For Your Next Diesel Generator
When you need a diesel-powered generator, there's no better place to go than PDG. On our website, you will likely find a diesel generator for sale that suits your needs. If not, contact our team and we will start building a custom diesel generator just for you. Choose from a variety of power options and sizes at PDG, and get world-class service and support during the lifetime of your diesel generator. Partner with PDG and experience true diesel power.
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