Portable Generators for Rent

Browse United Rentals’ selection of portable generators. Our options of small and medium generators are perfect for light-duty jobs or as emergency backup power. From small gas-powered portable generators to larger diesel-powered portable generators, our full fleet includes construction-grade units loaded with quality features and power from 2 kW to 6.9 kW to satisfy even the most demanding applications.

FAQs about Portable Generators

Do you have to ground a portable generator?

  • According to OSHA requirements, the frame of a portable generator does not need to be grounded (connected to earth) because the frame serves as the ground, replacing the grounding electrode.

How do I hook up a portable generator to a house?

  • There are a couple of ways to hook up a portable generator to a house. You can plug in each appliance with individual cords into the generator or power a circuit panel using a transfer switch.
Portable Generator Pack Shot
Cat Class Code
240-2981

2.0-2.4kW Portable Generator, Gas Powered

  • Electronic ignition
  • Gasoline powered
  • Runtime up to 5 hours
  • Three engine speeds available
  • Add this portable generator to your cart now
Portable Generator
Cat Class Code
240-2991

2.5-2.9kW Portable Generator, Gas Powered

  • Electronic ignition
  • Gasoline powered
  • Runtime up to 5 hours
  • Three engine speeds available
  • Add this portable generator to your cart now
Portable Generator Pack Shot
Cat Class Code
240-3001

3.0-3.4kW Portable Generator, Gas Powered

  • Electronic ignition
  • Gasoline powered
  • Runtime up to 5 hours on one tank of fuel
  • Ideal for powering up tools like compressors and grinders
  • Add this portable generator to your cart now
Compact Generator Pack Shot
Cat Class Code
240-3006

3.5-3.9kW Portable Generator, Gas Powered

  • Electronic ignition
  • Runtime up to 5 hours on one tank of fuel
  • Gasoline powered
  • Ideal for powering up tools like compressors and grinders
  • Add this portable generator to your cart now
Portable Generator, 4.0-4.4 kW
Cat Class Code
240-3021

4.0-4.4kW Portable Generator, Gas Powered

  • Runtime up to 5 hours on one tank of fuel
  • Mounted on a wheeled cart for increased portability
  • Gasoline powered
  • Power up tools, equipment or light towers
  • Add this portable generator to your cart now
Portable Generator
Cat Class Code
240-3041

5.0-5.4kW Portable Generator, Gas Powered

  • Runtime up to 8 hours on one tank of fuel
  • Mounted on a wheeled cart for increased portability
  • Gasoline powered
  • Power up tools, equipment or light towers
  • Add this portable generator to your cart now
Portable Generator Pack Shot
Cat Class Code
240-3036

5.0-6.5kW Portable Generator, Diesel Powered

  • Idle control function to save fuel and reduce noise
  • Provide power to electronics or tools
  • Electronic ignition
  • Runtime up to 32 hours on 50% load
  • Add this portable generator to your cart now
Portable Generator Pack Shot
Cat Class Code
240-3051

5.5-5.9kW Portable Generator, Gasoline Powered

  • Runtime up to 5.8 hours on one tank of fuel on full load
  • Gasoline powered
  • Ideal for powering up tools like compressors and grinders
  • Provide emergency or standby power
  • Add this portable generator to your cart now
Portable Generator Pack Shot
Cat Class Code
240-3056

6.0-6.4kW Portable Generator, Gasoline Powered

  • Runtime up to 8 hours on one tank of fuel on full load
  • Gasoline powered
  • Ideal for powering up tools like compressors and grinders
  • Provide emergency or standby power
  • Add this portable generator to your cart now
Generator Pack Shot
Cat Class Code
240-3061

6.5-6.9kW Portable Generator, Gas Powered

  • Runtime up to 6.9 hours on one tank of fuel
  • Mounted on a wheeled cart for increased portability
  • Gasoline powered
  • Power up tools, equipment or light towers
  • Add this portable generator to your cart now
Portable Generator Pack Shot
Cat Class Code
240-3071

7.5-7.9kW Portable Generator, Gasoline Powered

  • Runtime up to 6.9 hours on one tank of fuel on full load
  • Gasoline powered
  • Ideal for powering up tools like compressors and grinders
  • Provide emergency or standby power
  • Add this portable generator to your cart now
Portable Generator 9.6-9.9 kW
Cat Class Code
240-3091

9.6-9.9kW Portable Generator, Gasoline Powered

  • Runtime up to 3.7 hours on one tank of fuel on full load
  • Gasoline powered
  • Ideal for powering up tools like compressors and grinders
  • Durable frames
  • Add this portable generator to your cart now
Cat Class Code
240-3111

Generator, 12-14 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
240-3101

Portable Generator, 10.0 kW-11.9 kW

  • Electronic ignition
  • Gasoline powered
  • 8.2 gallon fuel tank capacity
  • 4.6 hour run time under full load
  • Uses: Ideal for providing consistant and portable power for jobsites and for emergency power systems
  • Contact a United Rentals representative for more information
8-8.4kW Portable Generator, Gas Powered
Cat Class Code
240-3076

Portable Generator, 8.0 kW-8.4 kW

  • Full-panel GFCI protection that is OSHA and NEC 2011 compliant
  • Idle control to conserve fuel and reduce noise
  • True Power technology provides clean, smooth operation of sensitive electronics, tools and appliances
  • Large-capacity steel fuel tank with an incorporated fuel gauge to keep you up and running on the jobsite
  • Uses: Ideal for providing consistant and portable power for jobsites and for emergency power systems
  • Contact a United Rentals representative for more information