Gretchen Schimelpfenig, PE, is the Technical Director of RII and manages the organization’s Technical Advisory Council. She is an LED-lit home cultivator. While serving Burlington Electric Department customers, she incentivized horticultural LED lighting equipment through energy efficiency programs, and has commissioned LED lighting designs and installed systems in commercial and industrial buildings, including greenhouses used for academic research on hemp and other cultivars. She authored the RII Best Practices Guides on HVAC and LED Lighting for Cannabis Cultivation and Controlled Environment Agriculture. She has a B.S. in Architectural Engineering from the University of Wyoming and an M.S. in Civil Engineering from Stanford University. She is a licensed Civil Professional Engineer in California and Vermont.