About Us

The market for energy products and services is very challenging. Established suppliers struggle to maintain sales levels and market share in a shifting environment, while new technologies, products and suppliers struggle for a foothold.

This is especially true in the Process Heat Transfer, Onsite Power Generation (OPG) and Distributed Generation (DG) markets, where the opportunity is difficult to define and even more difficult to realize., especially in the Rocky Mountain region. With low populations spread over a wide area, and industry challenges that differ from the rest of the country, it is an area easily forgotten or ignored.

This atmosphere calls for a new kind of sales organization, based on an old, tested concept: independent sales representation.

Onsite Power Marketing is dedicated to providing quality independent sales representation for suppliers to the process heat transfer and onsite power/distributed generation industries in the Rocky Mountain States.


Onsite Power Inc. was founded in October 2003 by Dennis and Cee Cee Roundtree of Aurora, Colorado.

img 3432Dennis serves as Vice President and CEO, and is a 40 year veteran of the industrial engine and onsite power industries. He spent many years as a sales person, manager and sales executive with several distributors of OPG equipment, including twelve years as Sales Manager and Vice President of Industrial Power Systems in Denver, Colorado. In 1999, Dennis became Vice President of the Distributed Generation group at Planergy International, an ESCO subsidiary of a major investor-owned utility, Xcel Energy. The Planergy DG group developed more than seventy onsite power generation projects in twenty-three states before his departure in 2002. He most recently served as national sales manager for ORMAT Technologies, a company specializing in the conversion of waste heat to electrical power.

In the course of such a wide range of responsibilities, Dennis has made thousands of contacts in all corners of the industry, gained a great deal of unique experience in nearly all onsite power technologies, and has served as an educator, speaker or author for many industry organizations including the Electrical Generating Systems Association, GPA Midstream,  National Food and Energy Council, Silicon Valley Manufacturers Group, Northwest Public Power Association and others.

img 3456Cee Cee is President and CFO, the financial brains of the organization. She has a long history in human resources, accounting and financial management for real estate management and health organizations. She is a highly-talented, organized and pragmatic manager who keeps our value proposition strong through sound management and careful control of costs.