The Passive House Network is governed by an independent board of directors, drawn from architecture, construction, development, finance, policy, and communications. Half hold PHI’s Passive House credentials.
Officers: Darren Macri, Chair; Eddy Voltaire, Vice Chair; David Komet, Treasurer; Nidhi Shah, Secretary.
Our bylaws, board committees, and tax returns are on the About page.
Directors
Director
Bruce Redman Becker
Bruce Redman Becker is President of Becker + Becker, an integrated sustainable architecture and development firm in Westport, Connecticut. Bruce designs buildings that have a transformative social and environmental value. His work includes historic rehabilitations and the creation of mixed-income communities. Most recently, Bruce completed the certified historic rehabilitation of the Pirelli building in New Haven, originally designed by Marcel Breuer, into Hotel Marcel: a 165-room boutique hotel that uses no fossil fuels and is the first Passive House certified hotel in the United States. Bruce also designed the headquarters for the Cary Institute of Ecosystem Studies in Millbrook, NY, and served as master planner for Amherst College. Bruce is a Fellow of the American Institute of Architects, a LEED Accredited Professional, and a Certified Passive House Designer. He was appointed by President Biden in May 2024 to serve as Commissioner of the United States Commission of Fine Arts. Bruce received a B.A. from Amherst College in American Studies and Fine Arts, and MBA and Master of Architecture degrees from Yale University, where he frequently lectures.
Director
Carlos J. Cardoso
Carlos J. Cardoso is a Partner and Director of Construction Administration at Beyer Blinder Belle. An architect with a passion for craftsmanship, Carlos is equally committed to design, details, and construction. His lifelong devotion to the practice of architecture began in childhood through exposure to his family’s construction and real estate business in Brazil, Portugal, and the United States. With more than 30 years of experience in the design, management, and execution of complex projects, Carlos focuses on new construction, renovation, and adaptive reuse for hospitality, residential, mixed-use, and other commercial projects. He is committed to sustainability efforts within the industry. A Certified Passive House Designer, Carlos is also a graduate of the City College of New York. He is a licensed architect in the states of New York, New Jersey, Ohio, and Florida.
Director
Maureen Guttman
Maureen Guttman is a licensed architect with over 30 years of experience in energy-efficient building design and related public policy. At Energy Solutions, she contributes to the development of national model building codes and programs around energy code compliance and building performance standards. Prior to joining Energy Solutions, she served as President of the Building Codes Assistance Project (BCAP) and Executive Director of the Governor’s Green Government Council, the state sustainability office for the Commonwealth of Pennsylvania. Maureen is an active member of the American Institute of Architects (AIA) and of the International Code Council (ICC), having served in leadership capacities with both organizations. Her expertise also includes nonprofit and public-sector leadership, policy analysis and development, strategic planning, and forging relationships and alliances.
Treasurer
David Komet
David Komet is a building-science consultant, investor, and developer whose career bridges capital markets and high-performance construction. For over three decades he has managed private investment pools across long/short equities, direct lending, and value-add real estate, and structured project finance for sustainable-development ventures. He brings deep board and governance experience: as a director of the San Antonio Area Foundation, a community foundation with assets of over $1 billion, he chaired both the Audit & Finance Committee and the Investment Committee. David is the founder and principal of Urban Earth LLC, a San Antonio consultancy specializing in high-performance buildings and regenerative real-estate development. A Certified Passive House Consultant, he holds a B.A. in International Relations from Tufts University (magna cum laude) and a graduate certificate in Green Building & Community Sustainability from Harvard University, and is a graduate-certificate candidate in Sustainable Design at the Boston Architectural College.
Chair
Darren Macri
Darren Macri is the CEO of Wythe Windows and Bleu Nest. He is a Certified Passive House Consultant and Tradesperson, and a LEED AP BD+C. His company, Wythe Windows, has a state-of-the-art window factory in Ramsey, NJ, dedicated to manufacturing high-performance Passive House quality windows and doors. Through Bleu Nest he built New Jersey’s first certified Passive House. Bleu Nest has since managed and consulted on many other Passive House projects, from historic retrofits to multifamily. He is proud to serve on the Board of Directors of The Passive House Network and to be one of the founders of New Jersey Passive House. Darren holds a Bachelor of Fine Arts degree from New York University.
Director
Katelyn Meehan
Katelyn graduated from the University of Maryland with a degree in environmental science, and spent the following two years in Peace Corps Peru as part of its environmental management program. She then received her master’s in Urban Planning from NYU Wagner, with a focus on infrastructure, transportation, and the environment. She worked for the Suffolk County Economic Development Department, building out its bus rapid transit initiative and commercial brownfields program, as well as transit-oriented developments. She later worked at New York City’s Department of Housing Preservation and Development (HPD) in both its inclusionary housing and credit and underwriting divisions. Katelyn is now a relationship manager in Wells Fargo’s Community Lending and Investment platform. She provides construction debt for affordable housing projects, primarily in the New York Metro area. Katelyn has been working to bridge her passion for sustainability and environmental responsibility with her current role, and has taken on additional responsibilities with the Wells Fargo Foundation and its efforts around decarbonization and affordable housing.
Director
Lindsay Schack
Lindsay Schack established her career as an architect and an educator by combining her knowledge of architectural technology with her background in psychology and research. In addition to private practice, Lindsay has instructed at Montana State University’s School of Architecture in design studio and research seminars, and as a guest lecturer. Lindsay has delivered lectures on sustainability at the Universidad Latina in Costa Rica and for Fine Homebuilding Magazine. Lindsay is Co-Founder of Love|Schack Architecture, a regional design firm that specializes in low-energy design using natural materials, and has sponsored Certified Passive House Tradesperson training in Montana and Wyoming in 2018, 2022, and 2023. Lindsay is a Certified Passive House Consultant, is certified by the National Council of Architectural Registration Boards, a LEED Accredited Professional, and a member of the American Institute of Architects. Lindsay was the 2023 Chair of the AIA Knowledge Community for Small Project Design, and is the architect of the first Passive House projects in Idaho, Montana, and Wyoming.
Secretary
Nidhi Shah
Nidhi Shah is a Sustainability Lead and Architect specializing in decarbonization, retrofit, and high-performance building physics. Her work focuses on Passive House design, fabric-first strategies, and delivering healthy, low-energy buildings through integrated technical work and deep stakeholder engagement. Nidhi has taught architecture and design at the university level at the National Institute of Design in India and the Birmingham School of Architecture and Design in the United Kingdom. She has worked on several school projects, including London Borough of Lewisham Schools, Salisbury Cathedral School, and Dalmain, Alverstoke, Myatt Garden, and Downderry Primary Schools. Nidhi holds a Diploma in Architecture from the Institute of Environmental Design in India, a Masters in Visual Communications from Birmingham City University in the UK, and a Masters in Architecture in Advanced Energy and Environmental Sustainability at the Centre for Alternative Technology in the UK.
Director
Karen Spiegel
Karen Spiegel is a skilled storyteller and reputation builder, especially for brands in transition. Karen has led global marketing and communications across many sectors, from clean energy to advertising. Her expertise centers on clarifying complexities, with the ability to articulate technology in understandable terms while teasing out an organization’s previously unrecognized attributes. With twenty-plus years of experience successfully repositioning companies and expanding their global credibility, Karen now leads KS&Co., LLC, where she continues to build brand reputations. Previously she was Chief Communications Officer at FCB, overseeing the company’s global rebranding initiative, and at R/GA as SVP Marketing and Communications, elevating the brand to the most innovative digital agency at the intersection of creative and technology. Karen has continually stressed the importance of communicating clearly and simply, with the end goal to improve revenues and expand customer engagement by using analytics. To assist others, she works with Cleantech Open, helping clean energy startups to better market their products and services. Karen holds a BA in English History from the University of Pennsylvania and a Doctor of Law from Santa Clara University School of Law.
Vice Chair
Eddy Voltaire
Eddy Voltaire is a sustainability consultant with Design Construction & Sustainability Inc. (DCS), a New York City-based firm. He is an experienced project and construction manager with a background in real estate, communications, and business development. While very diverse in experience, his approach often involves a distinct sense of play, aiming to put the fun in functional design. His work is guided by a strong belief in design as a problem-solving tool and a means of recognizing and forming relationships between ideas and reality, establishing a method for improving spatial equality and connecting people, community, and environment. DCS’s work exists at the intersection of art and technology. Eddy holds a degree in architecture and energy management from New York Institute of Technology.
Former directors
With thanks to those who have served:
- Lois Arena, Steven Winter Associates
- Lori Atwater, Transformation Village Inc.
- Bronwyn Barry, PassiveHouseBB
- Naomi Beal, passivhausMAINE
- Rob Bernhardt, Passive House Canada
- Laura Blau, BluPath Design
- Joya Cohen, Merchants Capital
- Rob Conboy, Glavel
- Edie Dillman, B.Public Prefab
- Tim Eian, TE Studio
- Sylvie Guevin, Gestion Projects Immobiliers
- Alexandra Kaplan, PGIM
- Ken Levenson, 475
- Andrew Michler, Hyperlocal Workshop
- Jay Murdoch, Owens Corning
- Brandon Nicholson, NK Passive
- Tomás O’Leary, Passive House Academy/MosArt
- Barry Stephens, Ventacity
- Craig Stevenson, AUROS Group
- Derrick Tillman, Bridging the Gap Development LLC
- Tim Weyand, Amazon
To reach the board, write to info@passivehousenetwork.org.
Checked October 2026.