Contact us today877.688.6812

Contact us today877.688.6812

After Hours Construction / Truck Service: (800) 952-7767

After Hours Power Service: (877) 891-4181

After Hours Power Rental: (800) 736-8121

New Power Equipment

We are ready

You have power generation demands and we have solutions. From diesel and gas generator sets to uninterruptible power supplies, automation transfer switches and electrical switchgear, our experienced Power Systems Division will deliver the power systems and support that you need.

Any size or shape. In any regulatory environment.

View our extensive line of Cat® products, all serviced and supported by the expert technicians at Patten Power Systems. No matter your needs, we will work closely with you to select the proper solution for your job.

Power Generation
  • Diesel Generator Sets – Caterpillar is the world's largest manufacturer of high-speed diesel generator sets and engines, offering the largest range of gen set specifications available
  • Gas Generator Sets – Cat gas generator engines are driving some powerful new changes in the way we see our world. All specifications offer high reliability, durability and fuel flexibility to burn fuels from the low energy landfill gas or bio-gas to pipeline natural gas and field gases

Learn More About Power Generation


Cat industrial engines are ready for your application. These engines deliver the unsurpassed reliability, durability, fuel efficiency and low cost of ownership you expect. Our world-class product line of high-speed and medium-speed industrial engines in a wide range of applications offer power solutions for the most demanding installations and the harshest environments.

Learn More About Industrial


When it comes to reliable marine engine power on the water, you can’t afford to compromise. Cat marine engines and technologies provide proven power and are built to last in any marine application.

Learn More About Marine

Oil & Gas

Why are so many Cat engines used in every area of the oil and gas business? Caterpillar prime movers are designed to be durable and to deliver low operating costs. And they have been proving it, day in and day out, in oil and gas applications throughout the world, since the 1930's.

Learn More About Oil & Gas

ATS, UPS & Switchgear

Integration ensures equipment is pre-configured to work together for optimum performance. By choosing a single supplier, you also benefit by having one point of contact for all of your support services.

Learn More About ATS, UPS & Switchgear

Altorfer, Inc. Logo

Altorfer, Inc. is proud to announce the acquisition of Patten Cat effective May 9, 2018. We look forward to supporting all your equipment and product support needs by providing the quality products and excellent service that you have come to expect from the Caterpillar family. Please be aware that the Patten Cat website will close soon and all traffic will be pointed to Thank you for giving us the opportunity to partner together with you for continued success.