Joëlle Jahn, NCIDQ, CPHC, LFA, LEED AP, WELL AP, Fitwel Ambassador | Senior Associate, New England Leader  

Specialties: Carbon Policy, City and State Sustainability Permitting, High-Performance Design, Net Zero Certifications, Health and Wellness Certifications, Stakeholder Engagement Workshops

Joëlle Jahn is a Senior Associate leading the JB&B Deep Carbon Reduction Group in the firm’s Boston office.  Ms. Jahn has worked closely with clients to provide energy and carbon benchmarking, decarbonization strategy, renewable energy analysis, and broad sustainability consulting for a variety of client types.  She brings an ability to organize, analyze, and manage data while leading clients to develop net-zero energy and carbon goals.  Ms. Jahn has project management experience on a variety of project types, including master planning, commercial mixed-use, higher education, science & technology, multi-family residential and cultural buildings. 

Ms. Jahn has expertise in the Massachusetts Energy Code and its climate action policies, including BERDO and BEUDO.  She has led sustainability permitting for over 20 million sq.ft. of real estate in Boston and Cambridge.  As part of this work, she has managed decarbonization and district energy studies, envelope performance analysis, electrification strategy and green building certifications.  Possessing a variety of green building rating system credentials including WELL, Fitwel, LEED, Living Building Challenge and Passive House, she leverages these frameworks to help project teams develop sustainability and decarbonization solutions that foster a healthy, resilient and equitable built environment.

Ms. Jahn serves as technical advisor to the City of Boston’s Zero Net Carbon Zoning Code and co-chair of the Carbon & Energy Roundtable for Built Environment Plus.  She is a published author for the International Building Performance Simulation Association (IBPSA), in which her design research seeks to influence passive strategies for climate-responsive emergency shelter design around the world.  She has been a guest lecturer and design critic at the BAC, Wentworth, Northeastern School of Architecture, Cornell University, and the Academy of the Arts San Francisco.  Ms. Jahn holds a Bachelor of Science degree in Environmental Design & Analysis from Cornell University and a Master of Design in Energy & Environment degree from Harvard Graduate School of Design.

Fun Fact: Joëlle is trilingual and speaks English, German and French. In her free time, she enjoys traveling, knitting and skiing.