Rocky Mountain Generator Supply (RMGS) is here to serve all your Generator requirements for any application!  We are the Premier Internet Supplier exclusively offering Cummins generator solutions; the world leader in Power Generation Systems.  RMGS founded in 2020 offers a rich history of knowledge and experience assisting customers with solutions for generator requirements for: RV’s, Commercial Mobile, Residential and Light Commercial applications. 

Founded on the premise of offering World Class Customer Service and offering the most exclusive Cummins Power Solutions; RMGS is committed to providing industry leading application and product selection guidance to ensure you have the right solution for your application. 

Rocky Mountain Generator Supply is a Woman Owned Small Business headquartered in Denver, Colorado and managed by: Willy Colby; a 17-year veteran Cummins employee in the power generation division.  RMGS is supported through the partnership with Computer Sites Inc.; a 30+ year Electrical, Mechanical and General Contractor serving the Data Center and Federal Government markets across the globe; specializing in the installation of Mission Critical UPS and Standby Generator solutions.  

The RMGS team is committed to supporting all your power generation requirements and our goal is to earn your business through expert advice, industry leading Cummins solutions, & world class customer service. 

THANK YOU FOR YOUR BUSINESS!

Willy Colby/ Vice President