Gretchen Schimelpfenig is Technical Director of Resource Innovation Institute, a role in which she leads RII’s Technical Advisory Council activities, articulates RII’s science-based positions, writes technical guidance on resource efficient cultivation, and supports PowerScore users with benchmarking analysis and reporting compliance. She recently authored RII’s Best Practices Guides on Cultivating Cannabis with LED Lighting and HVAC. Gretchen is also a licensed Civil Professional Engineer - Construction in California and Vermont. She has a MS in Civil Engineering, Sustainable Design & Construction - Energy from Stanford University and has published research for the U.S. Green Building Council on the topic of ground-source heat pumps. Gretchen is a home cultivator and is constantly using her HVAC and lighting knowledge to optimize her grow environment.