Michael J. Holtz, FAIA, NCARB, LEED AP
Michael Holtz is Principal and Co-Founder of LightLouver LLC. He has been at the forefront of architectural and energy research, development and sustainable design consulting since 1972. He has been associated with LightLouver LLC as co-founder and Principal (2005 to Present); Architectural Energy Corporation as co-founder and President / CEO (1982 – 2009); the Solar Energy Research Institute (now known as National Renewable Energy Laboratory) as Chief of the Building Systems Research Branch, and as Acting Director of the Buildings Division (1978 – 1982); the AIA Research Corporation as Program Manager and Director of Solar Energy Programs (1972 – 1978); the National Bureau of Standards (now known as the National Institute for Standards and Technology) as a research architect (1972); and, since 1976, his own architectural practice.
Mr. Holtz is nationally and internationally recognized as a leader in the field of energy and architecture. In 1975, he authored the first major U.S. publication on solar energy and housing design, Solar Dwelling Design Concepts. He established and managed comprehensive research programs involved in all aspects of solar energy including solar access (three dimensional zoning for providing and maintaining sufficient solar exposure of building surfaces in suburban and urban environments), sustainable community planning, passive solar heating and cooling, daylighting design and analysis, design tool development and evaluation, urban applications, and federal program planning and analysis. He conceived and implemented major national programs for the U.S. Department of Energy in manufactured buildings, commercial buildings, building energy design tools, and performance analysis and testing, such as the Class A, B and C Passive and Hybrid System Performance Evaluation Program, the Denver Solar Homebuilders Program, the Passive Commercial and Manufactured Buildings Programs and the Building Energy Analysis and Design Tool Program. These programs were undertaken in cooperation with the U.S. building industry and resulted in significantly advancing the design and construction of energy-conserving, climate-adaptive residential and commercial buildings.
He is a registered architect in Washington, D.C., Colorado and Tennessee, and is a holder of a National Council of Architectural Registration Board certificate. He holds a Bachelor of Architecture degree from Ball State University, Muncie, Indiana, and a Master of Architecture degree from the State University of New York, Buffalo, New York.
Zack L. Rogers, P.E., LEED AP
Zack Rogers is Co-Founder and Director of Engineering of LightLouver LLC. He has performed sustainable design and analysis services for for over ten years and has been actively involved in the daylighting design community for nine of those years. Mr. Rogers does optical daylighting design and has a patent for the optical design of the award winning LightLouver Daylighting System. He does software programming and development, and is the head developer of the award-winning Sensor Placement + Optimization Tool (SPOT). Mr. Rogers has provided sustainable design and daylighting design assistance on over 100 projects nationally and internationally with a focus on sustainable school design. He is a current member of several IESNA Daylighting committees and has published work on daylighting simulation techniques and daylighting metrics and speaks regularly on sustainability, daylighting design and photosensor lighting controls. Mr. Rogers is a professional engineer in Colorado and a LEED® Accredited Professional.
Robert J. Stephan
Bob Stephan joined LightLouver LLC in June of 2012 as the Operations Manager and runs the day-to-day operations at LightLouver's Colorado production facility. Mr. Stephan has over 15 years of management experience in the building materials industry. Prior to joining LightLouver LLC, he spent seven years as the Operations Manager and Estimating Manager for a German window manufacturer, importing hand-made wood windows and doors from Europe to North America. Mr. Stephan also worked for eight years at Universal Forest Products (UFPI), as the Customer Service Manager of their Colorado office. Mr. Stephan graduated from the University of Colorado at Boulder in 1990 with a Business Administration degree.