Diesel Generators for Rent

Satisfy all your remote site power, emergency backup or temporary power needs with our extensive lineup of diesel generators. We offer a variety of models from industry-leading manufacturers such as Generac, Wacker Neuson, Doosan, Cummins and more. Get these exclusive online rates by renting through our website or app.

For our full list of diesel generators for rent, view the items below. For more information about diesel generators, visit our resource section.

Cat Class Code
240-3111

13 kW Towable Generator, Tier 4 Diesel

  • 13 kW
  • Towable generator
  • Tier 4 diesel
  • 240V
  • Uses: Ideal for smaller jobsites and applications, like powering trailers or project equipment
Cat Class Code
240-3127

11-22 kW Towable Generator, Tier 4 Diesel

  • 11-22 kW
  • Towable generator
  • Tier 4 diesel
  • 120/240V
  • Uses: Ideal for powering commercial trailers, worksites or special events
Cat Class Code
240-3131

20-25 kW Towable Generator, Tier 4 Diesel

  • 20-25 kW
  • Towable generator
  • Tier 4 diesel
  • Voltages 120/208, 120/240, 277/480V based on model
  • Uses: Ideal for temporary or mobile jobsites, events and projects
Cat Class Code
240-3132

16-25 kW Towable Generator, Tier 4 Diesel

  • 16-25 kW
  • Towable generator
  • Tier 4 diesel
  • 240/480/600V
  • Uses: Ideal as a temporary power solution, like powering equipment and tools
Cat Class Code
240-3137

30-31kW Towable Generator, Tier 4 Diesel

  • 30-31kW
  • Towable generator
  • Tier 4 diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal as a remote power solution or emergency backup
Cat Class Code
240-3147

28kW Towable Generator, Tier 4 Diesel

  • 28kW
  • Towable generator
  • Tier 4 diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal for standby, backup, emergency or temporary power
Cat Class Code
240-3157

36-40 kW Towable Generator, Tier 4 Diesel

  • 36-40kW
  • Towable generator
  • Tier 4 diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal for flexible power applications and needs
Cat Class Code
240-3167

40-45 kW Towable Generator, Tier 4 Diesel

  • 40-45 kW
  • Towable generator
  • Tier 4 diesel
  • Voltages 120/208, 120/240, 277/480V based on model
  • Uses: Ideal for powering commercial worksites and special events or as an emergency solution
Cat Class Code
240-3187

56-64 kW Towable Generator, Tier 4 Diesel

  • 56-64 kW
  • Towable generator
  • Tier 4 diesel
  • Voltages 120/208, 120/240, 277/480V based on model
  • Uses: Ideal for heavy-duty applications with 24-hour run times
Cat Class Code
240-3212

80 kW Towable Generator, Tier 4 Diesel

  • 80 kW
  • Towable generator
  • Tier 4 diesel
  • Voltages 120/208, 120/240, 277/480V based on model
  • Uses: Ideal for providing lasting energy or reliable backup power
Cat Class Code
240-3225

90kW Towable Generator, Diesel

  • 90kW
  • Towable generator
  • Diesel powered
  • 208/240/440/480V
  • Uses: Ideal as an emergency energy or backup power solution, whether it's a hospital, office or construction site
Cat Class Code
240-3231

90-100kW Towable Generator, Diesel

  • 90-100kW
  • Towable generator
  • Diesel powered
  • 120/240V 1Ph, 277/480V 3Ph or 120/208V 3Ph
  • Uses: This 4-cycle diesel engine is ideal for jobsites that require maximum durability
Cat Class Code
240-3232

90-100kW Towable Generator, Tier 4 Diesel

  • 90-100kW
  • Towable generator
  • Tier 4 diesel powered
  • 277/480V, 139/240V or 120/208V 3Ph or 120/240V 1Ph
  • Uses: Ideal as a temporary power or emergency backup solution
Cat Class Code
240-3251

120-140 kW Towable Generator, Tier 4 Diesel

  • 120-140 kW
  • Towable generator
  • Tier 4 diesel
  • Voltages 120/208, 120/240, 277/480V based on model
  • Uses: Ideal as a remote or temporary power solution in a wide variety of jobsites
Cat Class Code
240-3256

140-150kW Towable Generator, Diesel

  • 140-150kW
  • Towable generator
  • Diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal as a remote or temporary power solution in varying climates
Cat Class Code
240-3257

145-159 kW Towable Generator, Tier 4 Diesel

  • 145-159kW
  • Towable generator
  • Tier 4 diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal as a remote or temporary power solution in varying climates
Cat Class Code
240-3286

175-199 kW Towable Generator, Diesel

  • 175-199kW
  • Towable generator
  • Diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal for maximum durability and reliability, with a 4-cycle diesel engine
Cat Class Code
240-3301

180-230kW Towable Generator, Diesel

  • 180-230kW
  • Towable generator
  • Diesel powered
  • 120/240V 1Ph, 277/480V 3Ph or 120/208V 3Ph
  • Uses: Ideal for versatile worksites that require durable equipment
Cat Class Code
240-3303

160-200 kW Towable Generator, Tier 4 Diesel

  • 160-200 kW
  • Towable generator
  • Tier 4 diesel
  • 208/240/480V
  • Uses: Ideal as an emergency energy or backup power solution, whether it's a hospital, office or construction site
Cat Class Code
240-3311

240-260kW Towable Generator, Diesel

  • 240-260kW
  • Towable generator
  • Diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal for standby, municipal and mobile applications
Cat Class Code
240-3313

190-260kW Towable Generator, Tier 4 Diesel

  • 190-260kW
  • Towable generator
  • Tier 4 diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal for powering large-scale applications, like construction sites and hospitals
Cat Class Code
240-3321

270kW Towable Generator, Diesel

  • 270kW
  • Towable generator
  • Diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal for large-scale applications, backup power or mobile projects
Cat Class Code
240-3410

450kW Towable Generator, Diesel

  • 450kW
  • Towable generator
  • Diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: Ideal for powering large-scale applications, like construction sites and hospitals
Cat Class Code
240-3412

450-500kW Towable Generator, Tier 4 Diesel

  • 450-500kW
  • Towable generator
  • Tier 4 diesel powered
  • 120/208, 120/240, 277/480V, depending on model
  • Uses: This generator is Ideal for large-scale applications, like weddings and construction sites
Cat Class Code
240-3711

160-210kW Towable Generator, Diesel

  • 160-210kW
  • Towable generator
  • Diesel powered
  • 120/240V, 120/208V and 277/480V
  • Uses: Ideal for powering mid-size productions, concerts and special events
Cat Class Code
240-4065

1,600-2,000 kW Towable Generator, Diesel

  • 1,600-2,000 kW
  • Towable generator
  • #2 diesel fuel
  • 480V standard, 600V optional
  • Uses: Ideal for providing lasting energy to large worksites, like construction sites or large offices
Cat Class Code
240-4051

800-1,000 kW Towable Generator, Diesel

  • 800-1,000 kW
  • Towable generator
  • Diesel
  • 280/208V
  • Uses: Ideal for planned and unplanned utility outages, large industrial applications, and critical facilities seeking utility-grade power
Cat Class Code
240-4060

1,200-1,500 kW Towable Generator, Diesel

  • 1,200-1,500 kW
  • Towable generator
  • Diesel
  • 277/240V
  • Uses: Ideal for powering large-scale applications, like construction sites and hospitals
Cat Class Code
240-4063

1,250-1,450kW Towable Generator, Diesel

  • 1,250-1,450kW
  • Towable generator
  • Diesel powered
  • 480V standard, 600V optional
  • Uses: Ideal for powering large events, construction sites or oil and gas operations
Resources

FAQs About Diesel Generators

Our fleet of commercial diesel generators for rent are construction grade and loaded with quality features that meet even the most demanding power generation applications. Our towable generators are complete with durable, sound-attenuated enclosures that provide quiet operation, suitable for various projects, noise requirements and working environments. We also carry larger, industrial mobile generators mounted on highway-legal trailers for maximum portability and convenience. Our towable diesel generators can produce power from 13 kilowatts to 1,600 kilowatts, perfect for all your temporary power needs. Explore our inventory above or contact a United Rentals power expert to assist you in finding the right diesel generator rental for your needs. For more information about Tier 4 generators, check out our Project Uptime article to get the facts on portable tier 4 generators with our comprehensive guide.

Learn more about diesel generators in the FAQ section below.

How much fuel does a diesel generator use?

The fuel consumption of a diesel generator depends on its size, power output and load. On average, a diesel generator uses about 0.4 to 0.8 gallons of fuel per hour for every 10 kilowatts (kW) of power produced. To estimate the fuel usage for your generator, consult the manufacturer's specifications or contact our team for additional information.

How do diesel generators compare to propane generators?

When comparing diesel-fueled generators to propane-powered generators, there are various factors to consider, including emissions, fuel costs, convenience and more. Learn all about the pros and cons of propane versus diesel generators in our Project Uptime article.

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. 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