Dr. Roos is a mechanical engineer with over 20 years of experience in industrial and building systems energy efficiency, specializing in the development of Excel-based calculators for engineers and contractors. She provides technical assistance on commercial and industrial energy system efficiency and renewable energy projects. Dr. Roos also provides technical support to the U.S. DOE Northwest Combined Heat and Power Technical Assistance Partnership, focusing on CHP, biopower and waste heat to power applications. She previously worked as an energy management engineer at Puget Sound Energy, where she performed energy efficiency analyses for commercial and industrial customers, and at the Army Corps of Engineers Hydroelectric Design Center.