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


Power that doesn’t quit

When you need clean, continuous electric power solutions, count on Patten Cat. As the authorized Caterpillar® Power Systems Distributor for Northern Illinois and Northwest Indiana, we can provide you with support from the biggest name in the electric power equipment industry. Our list of reliable Cat power products includes:

Diesel Generator Sets

Caterpillar is the world's largest manufacturer of high-speed diesel generator sets and engines, offering ratings from 12kW to 17,460kW.

Gas Generator Sets

Caterpillar gas gensets are driving some powerful new changes in our world, like the flexibility to burn landfill methane, agricultural bio-gas, and natural gas.

Gaseous Fuel Power

Biogas Engines

Integrated Systems

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.

Options and Attachments

Customize your generator to fit your needs with Cat generator options, control panels, monitoring options and generator accessories. For a complete list and specifications, please contact us, or click on the + sign to expand each category below.

Generator Options

Generator Control Systems & Monitoring Options

Generator Accessories


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.