Diesel Generators for Rent

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

FAQs About Diesel Generators

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.
100kW Towable Diesel Generator
Cat Class Code
240-3231

100kW Towable Diesel Generator

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by skid trailer
Generator Pack Shot
Cat Class Code
240-3251

125kW Towable Diesel Generator

  • 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
Diesel Generator Heater Pack Shot
Cat Class Code
240-3131

15.2-23.2kW Towable Generator, 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
Generator Pack Shot
Cat Class Code
240-3132

15.2-23.2kW Towable Generator, 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
Generator Pack Shot
Cat Class Code
240-3256

150kW Towable Diesel Generator

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by skid trailer
Generator Pack Shot
Cat Class Code
240-3286

175kW Towable Diesel Generator

  • 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
1600 AMP Generator
Cat Class Code
240-3711

192kW Diesel Generator

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by trailer
Generator Pack Shot
Cat Class Code
240-4065

2,000kW Industrial Mobile Generator

  • Unit dimensions 576" x 96" x 162"
  • 1,250-gallon diesel fuel tank for increased uptime
  • 9.8 hours runtime at maximum load
  • Mounted to highway legal trailer
Generator Pack Shot
Cat Class Code
240-3301

200kW Towable Diesel Generator

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by trailer
Generator Pack Shot
Cat Class Code
240-3311

250kW Towable Diesel Generator

  • 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
Cat Class Code
240-3136

30-39 kVA Portable Generator

  • High-powered for large jobs
  • Durable for your outdoor jobsites
  • Skid-mounted and towable options available for mobile generators
  • Power up tools, equipment or light towers
  • Uses: Ideal for immediate power sourcing on jobsites where large grounded sources are unavailable
  • Add this generator to your cart now
Generator Pack shot
Cat Class Code
240-3321

300kW Towable Diesel Generator

  • Large fuel tank to maximize uptime
  • Emergency stop switch included
  • Voltage selector switch and multiple outlets
  • Transported by trailer
Diesel Power Generator, 50-59 kVA
Cat Class Code
240-3166

40-47kW Towable Generator, Diesel Powered

  • Mounted to a highway-legal towable trailer
  • 50-59 kVA actual power capacity
  • Efficient diesel engine with quiet operation
  • Power up tools, equipment or light towers
  • Add this towable generator to your cart now
Electric Generator 50-59 Kva
Cat Class Code
240-3167

40-47kW Towable Generator, Tier 4 Compliant Diesel

  • 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
500 KW Generator
Cat Class Code
240-3410

500kW Industrial Mobile Generator

  • Unit dimensions 239" x 96" x 150"
  • Large 855-gallon diesel fuel tank for increased uptime
  • 25.2 hours runtime at maximum load
  • Mounted to highway legal trailer
gray towable generator
Cat Class Code
240-3186

60kW Diesel Generator

  • Large diesel fuel tank
  • Quiet operation
  • 25-125 kVA
  • Manufacturers include Wacker Neuson, Generac and other popular brands
  • Uses: Ideal for remote site power or emergency backup with sound attenuation available; towable for easy transportation
  • Add this diesel generator to your cart now
Generator Diesel 68-71 kW
Cat Class Code
240-3196

68-71kW Towable Generator, 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
Generator Pack Shot
Cat Class Code
240-3225

88-89kW Towable Generator, 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
Cat Class Code
240-3482

Generator, 1,600-1,799 kW, Diesel Powered

  • Provides up to 1,600 or 1,799 kW of power
  • Large diesel fuel tank to maximize uptime
  • Mounted to highway-legal trailer
  • Generator is housed in sound-attenuated enclosures for quiet operation
  • Uses: Ideal for providing reliable power for jobsites or emergency power in disaster situations
  • Please contact a United Rentals representative for more information
Cat Class Code
240-3232

Generator, 125-149 KVA, Tier 4

  • 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
240-3127

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
Cat Class Code
240-3257

Generator, 180-199 KVA, Tier 4

  • 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
240-3303

Generator, 250-299 KVA, Tier 4

  • 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
240-3313

Generator, 275 kW, 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
Cat Class Code
240-3137

Generator, 36 kW, 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
Cat Class Code
240-3156

Generator, 36-69 kW, Diesel

  • 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
Cat Class Code
240-3147

Generator, 40-44 KVA, Tier 4

  • 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
generator product shot
Cat Class Code
240-3157

Generator, 45 kVA-49 kVA, 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
Cat Class Code
240-3412

Generator, 600 kVA-699 kVA, Diesel Powered, Tier 4

  • 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 consistant and portable power for jobsites and for emergency power systems
  • Contact a United Rentals representative for more information
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
Cat Class Code
240-3187

Generator, 70-80 KVA, Tier 4

  • 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
240-3212

Generator, 80 kW, 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
1000 KW Generator
Cat Class Code
240-4051

1,000kW Diesel Generator

  • 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
Generator Pack Shot
Cat Class Code
240-4060

1,500kW Industrial Mobile Generator

  • Unit dimensions 576" x 96" x 162"
  • Large 1,250-gallon diesel fuel tank to maximize uptime
  • Mounted to highway legal trailers
  • Runtime up to 13.6 hours on one tank of fuel
Generator Pack Shot
Cat Class Code
240-4063

1,600kW Towable Diesel Generator

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