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Diesel Generators for Rent

United Rentals offers a complete line of sound-muffled diesel generator rentals for remote site power or emergency backup.

White and black Generac Mobile diesel powered generator
Cat Class Code
240-3111

Generator, 12-14 kW, Diesel Powered

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Efficient diesel engine with quiet operation
  • Uses: Ideal for powering tools, light towers and other equipment
  • Add this generator to your cart now
White Multiquip towable diesel powered generator attached to trailer

Lower Diesel Emissions

Cat Class Code
240-3127

Generator, 15.0 kW-17.9 kW, Diesel Powered

  • Quiet operation
  • Standard safety features
  • Comes with a Power Zone programmable controller
  • 56 gallon fuel tank capacity
  • Uses: Ideal for providing consistant and portable power for jobsites and for emergency power systems
  • Contact a United Rentals representative for more information
White Wacker-Neuson 20kW towable generator
Cat Class Code
240-3131

Towable Generator, 15.2-23.2kW, Diesel Powered

  • Mounted to a highway-legal towable trailer
  • 19-29kVA actual power capacity
  • Efficient diesel engine
  • Power up tools, equipment or light towers
  • Add this towable generator to your cart now
White Multiquip towable tier 4 diesel powered generator attached to trailer

Lower Diesel Emissions

Cat Class Code
240-3132

Towable Generator, 15.2-23.2kW, Tier 4 Diesel Compliant

  • Mounted to a highway-legal towable trailer
  • 19-29kVA actual power capacity
  • Tier 4 compliant diesel engine
  • Power up tools, equipment or light towers
  • Add this towable generator to your cart now
White Allmand Generator

Lower Diesel Emissions

Cat Class Code
240-3137

Generator, 36kW, Tier 4 Diesel Powered

  • 100-gallon fuel tank capacity
  • Sound attenuated for quiet operation
  • Voltage regulator controls the voltage to within 1%
  • Highway-legal trailer for easy transportation
  • Uses: Ideal for remote jobsite power or emergency backup
  • Add this generator to your cart now
White Multiquip towable tier 4 diesel powered generator attached to trailer with compartment doors open

Lower Diesel Emissions

Cat Class Code
240-3147

Generator, 40-44 kVA, Tier 4 Diesel Powered

  • High-powered for large jobs
  • Durable for your outdoor jobsites
  • Meets EPA emissions requirements
  • Skid-mounted and towable options available for mobile generators
  • Uses: Ideal for powering tools, light towers and other equipment
  • Add this generator to your cart now
Cat Class Code
240-3156

Generator, 36-69 kW, Diesel Powered

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Efficient diesel engine with quiet operation
  • Uses: Ideal for powering tools, light towers and other equipment
  • Add this generator to your cart now
White and black Generac Mobile Tier 4 diesel powered generator

Lower Diesel Emissions

Cat Class Code
240-3157

Generator, 45-49 kVA, Tier 4 Diesel Powered

  • Quiet operation
  • Standard safety features
  • Comes with a Power Zone programmable controller
  • 100 gallon fuel capacity
  • Uses: Ideal for providing consistant and portable power for jobsites and for emergency power systems
  • Contact a United Rentals representative for more information
Wacker white towable electric generator

Lower Diesel Emissions

Cat Class Code
240-3167

Towable Generator, 40-47kW, Tier 4 Diesel Compliant

  • Mounted to a highway-legal towable trailer
  • 50-59 kVA actual power capacity
  • Tier 4 compliant diesel engine
  • Power up tools, equipment or light towers
  • Add this towable generator to your cart now
Black and white JCB 70-80 KVA Tier 4 towable generator

Lower Diesel Emissions

Cat Class Code
240-3187

Generator, 70-84 KVA, Tier 4

  • High-powered for large jobs
  • Durable for your outdoor jobsites
  • Meets EPA emissions requirements
  • Skid-mounted and towable options available
  • Uses: Ideal for powering tools, light towers and other equipment
  • Add this generator to your cart now
Cat Class Code
240-3190

Generator, 70 kVA-84 kVA, Diesel Powered

  • Quiet operation
  • Standard safety features
  • Voltage: 600
  • Suitable for a variety of applications
  • Uses: Ideal for providing consistant and portable power for jobsites and for emergency power systems
  • Contact a United Rentals representative for more information
Generator Diesel 68-71 kW
Cat Class Code
240-3196

Towable Generator, 68-71kW, Diesel Powered

  • Mounted to a highway-legal towable trailer
  • 85-88.75kVA actual power capacity
  • Efficient diesel engine
  • Power up tools, equipment or light towers
  • Add this towable generator to your cart now
White and black Generac Mobile 80kw towable generator

Lower Diesel Emissions

Cat Class Code
240-3212

Generator, 80kW, Tier 4 Diesel Powered

  • 187-gallon fuel tank capacity
  • Sound attenuated for quiet operation
  • Voltage regulator controls the voltage to within 1%
  • Highway-legal trailer for easy transportation
  • Uses: Ideal for remote jobsite power or emergency backup
  • Add this generator to your cart now
Generator Pack Shot
Cat Class Code
240-3225

Towable Generator, 88-89kW, Diesel Powered

  • Mounted to a highway-legal towable trailer
  • 111-123kVA actual power capacity
  • Efficient diesel engine with quiet operation
  • Power up tools, equipment or light towers
White 100kW Towable Diesel Generator
Cat Class Code
240-3231

Towable Generator, 100kW, Diesel Powered

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by skid trailer
Black and white JCB 125-149 KVA Tier 4 towable generator

Lower Diesel Emissions

Cat Class Code
240-3232

Generator, 125-149 kVA, Tier 4 Diesel Powered

  • High-powered for large jobs
  • Durable for your outdoor jobsites
  • Meets EPA emissions requirements
  • Skid-mounted and towable options available for mobile generators
  • Uses: Ideal for powering tools, light towers and other equipment
  • Add this generator to your cart now
White 125kW towable generator
Cat Class Code
240-3251

Towable Generator, 125kW, Diesel Powered

  • Large 205-gallon diesel fuel tank to maximize uptime
  • Unit dimensions 223" x 79" x 99"
  • Runtime up to 37 hours on one tank of fuel
  • Transported by skid trailer
White 150kW towable generator
Cat Class Code
240-3256

Towable Generator, 150kW, Diesel Powered

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by skid trailer
White and red Cummins Tier 4 towable generator

Lower Diesel Emissions

Cat Class Code
240-3257

Generator, 180-199 kVA, Tier 4 Diesel Powered

  • High-powered for large jobs
  • Durable for your outdoor jobsites
  • Meets EPA emissions requirements
  • Skid-mounted and towable options available for mobile generators
  • Uses: Ideal for powering tools, light towers and other equipment
  • Add this generator to your cart now
White 175kW Towable Generator
Cat Class Code
240-3286

Towable Generator, 175kW, Diesel Powered

  • Large 350-gallon diesel fuel tank to maximize uptime
  • Runtime up to 28.5 hours on one tank of fuel
  • Unit dimensions 224" x 80" x 100"
  • Mounted on a trailer
White 200kW towable generator
Cat Class Code
240-3301

Towable Generator, 200kW, Diesel Powered

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by trailer
White and red Cummins Tier 4 towable generator

Lower Diesel Emissions

Cat Class Code
240-3303

Generator, 250-299 kVA, Tier 4 Diesel Powered

  • High-powered for large jobs
  • Durable for your outdoor jobsites
  • Meets EPA emissions requirements
  • Skid-mounted and towable options available for mobile generators
  • Uses: Ideal for powering tools, light towers and other equipment
  • Add this generator to your cart now
White 250kW towable generator
Cat Class Code
240-3311

Towable Generator, 250kW, Diesel Powered

  • Unit dimensions 234" x 93" x 104"
  • Large 429-gallon diesel fuel tank for increased uptime
  • 25.7 hours runtime at maximum load
  • Mounted to trailer
White and red Cummins 275 kW towable generator

Lower Diesel Emissions

Cat Class Code
240-3313

Generator, 275kW, Tier 4 Diesel Powered

  • High powered for large jobs
  • Durable for your outdoor jobsites
  • Meets EPA emission requirements
  • Skid-mounted and towable options available for mobile generators
  • Uses: Ideal for emergency backup power or for powering tools, light towers and other equipment around the jobsite
  • Please contact a United Rentals representative for more information
White and red Cummins 300kW towable generator
Cat Class Code
240-3321

Towable Generator, 300kW, Diesel Powered

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by trailer
White 500kW Industrial Mobile Generator
Cat Class Code
240-3410

Industrial Mobile Generator, 500kW, Diesel Powered

  • Unit dimensions: 239" x 96" x 150"
  • Large 855-gallon diesel fuel tank for increased uptime
  • 25.2-hour run time at maximum load
  • Mounted to highway-legal trailer
  • Uses: Ideal for temporary or emergency power in industrial applications
White Cummins Tier 4 towable generator

Lower Diesel Emissions

Cat Class Code
240-3412

Generator, 600-699 kVA, Tier 4 Diesel Powered

  • Able to start and assume load in a short time
  • Standard safety features
  • Easy to use and maintain
  • Suitable for a variety of applications
  • Uses: Ideal for providing consistent and portable power for jobsites and emergency power systems
  • Add this Tier 4 diesel generator to your cart now
White 1600 AMP Generator on wheels
Cat Class Code
240-3711

Generator, 192kW, Diesel Powered

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by trailer
White and red Cummins 2,000 kW industrial mobile generator
Cat Class Code
240-4065

Industrial Mobile Generator, 2,000kW, Diesel Powered

  • Unit dimensions: 576" x 96" x 162"
  • Large 1,250-gallon diesel fuel tank for increased uptime
  • 9.8-hour run time at maximum load
  • Mounted to highway-legal trailer
  • Uses: Ideal for temporary or emergency power in industrial applications
White and red 1,000 kW towable generator
Cat Class Code
240-4051

Generator, 1,000kW Diesel Powered

  • Unit dimensions 359" x 96" x 162"
  • Large 1,600-gallon diesel fuel tank to maximize uptime
  • Mounted to highway legal trailer
  • Runtime up to 23.2 hours on one tank of fuel
White and red Cummins 1,500 kW industrial mobile generator
Cat Class Code
240-4060

Industrial Mobile Generator, 1,500kW, Diesel Powered

  • Unit dimensions: 576" x 96" x 162"
  • Large 1,250-gallon diesel fuel tank to maximize uptime
  • Mounted to highway-legal trailer
  • Run time up to 13.6 hours on 1 tank of fuel
  • Uses: Ideal for temporary or emergency power in industrial applications
White 1,600kW towable generator
Cat Class Code
240-4063

Towable Generator, 1,600kW, Diesel Powered

  • Large diesel fuel tank to maximize uptime
  • Voltage regulator controls voltage to within 1%
  • Emergency stop switch included
  • Mounted to a highway legal trailer
Resources

FAQs About Diesel Generators

Our fleet of commercial diesel and gas generators for rent are construction grade and loaded with quality features that satisfy even the most demanding power generation applications. We offer both towable diesel generators and stand-alone models capable of producing power from 9 kilowatts to 1,120 kilowatts, perfect for your temporary power needs. Learn more about generators in the FAQ section below or contact a United Rentals power expert to assist you in finding the right generator for your needs.

FAQs
What is the difference between No. 1 and No. 2 diesel fuel?

No. 1 diesel fuel is typically considered the premium diesel fuel choice with extra lubricants and fuel additives that help clean the system. This fuel is also known to perform better in cold temperatures. No. 2 diesel fuel is more commonly available, doesn’t burn as quickly and is typically less expensive than No. 1 diesel fuel.

Can I use red diesel in a generator?

Yes. Red diesel, also known as off-road diesel, can be used for engines that power off-road vehicles and construction equipment like bulldozers. However, using it for street-operated vehicles is illegal.

How long can a diesel generator run continuously?

Diesel generators are often equipped with a 24-hour fuel tank, and some even come with a 48- to 72-hour tank. Read the owner’s manual or speak with a United Rentals representative to determine what capacity tank you need from your generator rental. Make sure to closely follow all safety guidelines and keep generators positioned outside and away from open windows to prevent dangerous levels of carbon monoxide from entering any homes or businesses.

 

Generators in Action