Abendroth, headshot

ryan abendroth

Passive Energy Designs

Ryan Abendroth feels strongly about the ever increasing need for energy efficiency in buildings which led him to work with hundreds of passive house projects including small residential designs and student projects to mid-sized commercial and non-profit developments. Professionally, Ryan has been at the forefront of research and design in passive houses for almost a decade. He began modeling his first Passive House in 2008. In 2009, he joined the Passive House institute US as the Certification Manager where he reviewed every project for compliance with the Passive House Certification process over the course of almost 4 years. And concurrently, in January of 2010 founded Passive Energy Designs a St. Louis, MO based consulting firm specializing in achieving built high-performance and low-energy buildings that meet the passive house standard. Ryan holds a Master of Architecture and a Bachelor of Science in Architectural Studies from the University of Illinois at Urbana-Champaign. His design education and research focused on energy efficiency and building science, which led to a thesis entitled ”A Critical Analysis of the Passive House Standard for the Climates of the United States.” This thesis helped lay the groundwork for the PHIUS+2015 Standard and the Building America Study which developed it. Currently, Ryan is a lecturer at the Sam Fox School of Design and Visual Arts at Washington University in St. Louis where he teaches both graduate and undergraduate courses focused on the impacts of climate, site, energy, detailing, and building information modeling (BIM) on the built environment. Previously he taught at the Rhode Island School of Design as both a Visiting Lecturer and Critic and has acted as a passive house consultant for Kansas University’s 5th year design-build program, Studio 804.


florian antretter

Fraunhofer IBP, PHIUS Technical Committee

Florian Antretter leads the group for Hygrothermal Building Analysis at Fraunhofer IBP. The group examines the hygrothermal performance and interaction of the building envelope and systems with the enclosed space. The achieved insight is used to develop and apply a hygrothermal whole building simulation tool. It allows a detailed analysis with regards to energy use, indoor environment and the hygrothermal conditions in the building envelope. Mr. Antretter first gained experience on building sites as a certified craftsman. Material, component and whole building measurements in laboratory and in the field combined with statistical data assessment at Fraunhofer IBP and Oak Ridge National Laboratory extended his experience. He is an expert in hygrothermal building component and whole building simulation as well as in application of computational fluid dynamics software. His involvement in North American, Asian and European projects enables him to conduct research and develop solutions in an international environment. Since 2010 he lectures to civil engineering students at University of Applied Sciences, Munich. Mr. Antretter has published more than 20 scientific articles in international journals and conference proceedings.


lois arena

Steven Winter Associates

Lois Arena, a Senior Mechanical Engineer employed at Steven Winter Associates, Inc possesses over 20 years experience in the building science field and has extensive experience with new and existing buildings  Lois holds both US and international Passive House consultant certifications and is currently consulting on projects ranging from single family homes to high rise apartment buildings. She has co-authored and presented training programs about energy efficient building practices to professionals in all sectors of the building industry and is regularly invited to present at national conferences and private firms on topics ranging from moisture control in buildings to road blocks to PH adoption. She received her M.S. in engineering from the University of Colorado’s Building Science Program.


jonathan arnold

Arnold Development Group

Jonathan Arnold is responsible for strategy, corporate vision, and capital structure for Arnold Development Group. He holds a degree in architecture from Cornell University and a masters degree in real estate development from Columbia University. Over the past 15 years, he has successfully helped design and market more than $6 billion in commercial real estate, including more than 40 continuing care retirement communities, 2,500 apartment units, and more than two dozen large scale mixed-use urban infill developments.


allison bailes

Energy Vanguard

Allison Bailes writes the Energy Vanguard Blog for the company of the same name, which he founded in 2008. He has also built a high-performance home out of structural insulated panels, run a home performance company, and worked as regional manager for the EarthCraft House green building program. Having earned a PhD in physics from the University of Florida, he has a strong background in the science underlying the growing field of building science. He is a certified RESNET HERS trainer and on the board of directors for the Passive House Institute US (PHIUS). In addition, he is a juggler and a skier as well as having the honor of being perhaps the only man included in Who’s Who of American Women.


chris ball

Energy Efficiency Director, City of Bloomfield, Iowa

Chris Ball is the Energy Efficiency Director for the City of Bloomfield, Iowa. In March of 2015 the Energy Independent Bloomfield team was one of twelve selected nationally to participate in the Rocky Mountain Institute’s eLab Accelerator. The city will receive 56 AmeriCorps members over the next two years (a nearly $1 million investment from the Federal Government) to help with the work of making Bloomfield homes more energy efficient.

Alan Barlis

alan barlis

Barlis Wedlick

Alan Barlis first came to the firm now known as BarlisWedlick Architects LLC in 1997 after studying both system architecture and urban planning abroad. Barlis’ spearheaded the opening of a satellite office in Colorado, running projects in Basalt, Aspen, and Vail. After returning to New York, Barlis managed the main practice, expanding the firm’s portfolio beyond rural resort properties to include urban residences, affordable housing projects, rural conservation subdivisions, and sustainable prototypes. In 2005, Barlis became co-owner of the firm. Barlis holds a Masters of Architecture from MIT; he is a registered architect in New York, Pennsylvania, Connecticut, and Florida, and trained in LEED and Passive House certification. A frequent speaker on architecture, interior design, and energy conservation, Barlis also teaches at the City College of New York, and is co-author with Dennis Wedlick of Classic and Modern: Signature Styles (2013).


tom bassett-dilley

Tom Bassett-Dilley Architect, Ltd.

Tom Bassett-Dilley is the president of Tom Bassett-Dilley Architect, Ltd., the Oak Park, IL firm he founded in 2006 to pursue sustainability in architecture. Towards this end he became a CPHC® in 2011. His work has primarily been residential, from new construction to retrofits and additions as well as historic preservation. He has presented on Passive House topics, preservation, and efficiency through numerous conferences, the Chicago Center for Green Technology, and the Passive House Alliance. He is a member of the AIA and president of the Chicago Chapter of the Passive House Alliance.


tedd benson


Tedd Benson is the Founder and Company Steward of Bensonwood + Unity Homes. Since 1973, he has championed high-performance, sustainable home building with an emphasis on innovation and craftsmanship. He and the company have been featured on PBS’s This Old House as well as in numerous magazines and newspapers. Benson has authored three seminal books on timberframing, the first of which, Building the Timber Frame House (Scribner’s Sons, 1980) was instrumental in spurring the timberframe revival. In 2012, Bensonwood’s search for a new and better way to build resulted in the founding of a new company, Unity Building Technologies (Unity Homes brand) focused on making healthy, high performance homes more affordable by applying the Bensonwood-tested operating system with a unique approach to offsite fabrication. BuildingGreen recognized Unity Homes as a “Top-10 Green Building Product for 2016.”

Laura Blau standing 300dpi 3in(2)-001

laura blau


Laura is principal of BluPath, an award winning architecture, WBE and a Passive House consulting firm. She is a Certified Passive House Consultant (CPHC®) (2009) and Certified Passive House Builder (2012). She is a founding member and Vice President of the Greater Philadelphia Passive House Association. She was previously at MGA Partners as project architect for the Byrne US Courthouse, receiving the AIA Pennsylvania Merit Award for 2003, and the National GSA Design Excellence Award Citation, First Impressions 2002. Laura taught architecture at Temple and Philadelphia University and provides seminars on sustainable design and Passive House Standard for professional organizations at international and regional venues. Laura served on the Board of the Delaware Valley Green Building Council 2008-2011. BluPath’s awards include the 2006 Commonwealth Design Award for Sustainable Design, the 2007 IIDA Honorable Mention for Sustainability and the 2010 Green Builder award for Best Life Cycle Addition. Laura received her MArch 1995 from University of Pennsylvania. She co-authored a book, Frazier Forman Peters: Westport’s Legacy in Stone about architect FF Peters for the Westport Historical Society, Westport, CT.


steven bluestone

Bluestone Organization

Steve Bluestone, a partner in The Bluestone Organization (a 3rd generation, 89 year old NYC development/contracting/property management firm), has led his company’s efforts to construct at no extra cost, many large, affordable, multi-family residential buildings using off the shelf components that have achieved record breaking low energy consumption levels. In 2015, Steve completed construction on the first structure built with autoclaved aerated concrete walls North America to reach PHIUS certification. His firm (The Bluestone Organization) is currently constructing a 7 story, 101 unit rental apartment building and several single family homes (for homeowners who lost their houses during Superstorm Sandy) that are all aiming to achieve PHIUS certification. His firm currently has 2,500+ units of housing in their pipeline that they when built will all affordably reach the Passive House standard. Steve is passionate about seeking out the simplest foolproof materials and systems available to achieve the highest performance possible.

Michael Bonn

michael bonn

Ankrom Moisan Architects

Michael Bonn has been practicing architecture for over 15 years and is a Senior Associate with Ankrom Moisan Associated Architects in Portland Oregon. His broad spectrum of projects has ranged from resort and hospitality to multifamily and affordable housing. The majority of his career has been focused on wood frame construction. He has a passion for this construction type and a thorough understanding of the technical requirements associated with it. Michael is also committed to sustainability principles that promote responsible design decisions and sound business strategies for his clients. His recent projects have included a Wyndam Resort in California’s wine country, the Tetherow Golf Clubhouse in Bend, Oregon, multiple six story wood frame housing projects in Portland’s urban core, and North America’s largest Passive House certified multifamily housing project.

Alexis Borman

alexis borman

Prairie View A&M University

Alexis Borman recently graduated with her bachelors in Architecture with a 4.0 GPA, and is currently a graduate Architecture student at Prairie View A&M University. She is a senior member of the Prairie View A&M University’s Women’s bowling team, helping her team win a conference championship in 2015. She was part of the winning team, Green Future, of the 2016 Race to Zero competition, and is, currently, working towards her CPHC® licensure.


laura briggs

Rhode Island School of Design

Laura Briggs is head of the Department of Architecture at the Rhode Island School of Design (RISD). Prior to joining RISD, she served as director of the Bachelor of Fine Arts of Architecture Program, interim dean of the School of Constructed Environments, and chair of Sustainable Architecture at Parsons New School for Design. She taught architecture studio and ecological design and was the faculty lead for the school’s 2011 entry into the Solar Decathlon, now home to two families in Washington, DC. Previously, she taught at the University of Pennsylvania, Cornell University, and University of Michigan as the Mushenheim Fellow. Briggs is a partner in BriggsKnowles Studio, a practice recognized for its integration of energy efficient and renewable energy technology. She holds a Master’s Degree from Columbia University’s Advanced Architectural Design Program and a Bachelor of Architecture from Rhode Island School of Design.


mike browne

Advanced Building Analysis (ABA)

Mike Browne is the founder of Advanced Building Analysis (ABA). Previously he worked in traditional woodworking architectural woodworking, and CNC programming for 10 years. Returningmto engineering, Browne became a RESNET certified Energy Rater and Provider as well as the first 2012 NGBS accredited rater in Massachusetts. He is also a certified PHIUS+ Rater, and has trained in infrared imaging at FLIR.

Browne is President and board member of Energy Raters of Massachusetts, Inc., a RESNET accredited HERS Provider that specifically caters to Independent HERS Raters working in Massachusetts.

As more and more energy efficiency alternatives become available, he is excited to be able to help local builders and homeowners quantify their options and take advantage of the best construction practices and the best funding assistance programs available, such as tax credits, rebates, grants and energy efficient mortgages. Browne holds a B.S. in Material Science and Engineering from Brown University.


karla butterfield

Steven Winter Associates

Ms. Butterfield is a sustainability consultant at SWA, working with residential buildings. Her expertise is in sustainable consulting services, program certification support and implementation of high performance building technologies. With architects, developers, builders, and homeowners, she develops specific sustainability strategies for both new construction and renovations. Karla is an integral part of the initial strategic planning sessions and stakeholder workshops based on program criteria; she verifies in the LEED® for Homes, Passive House, Energy Star, and National Green Building Standard programs.


robert clarke

Robert has worked for more than three decades at the forefront of worldwide architectural-glass and window technology. His expertise extends to the impact of very high-performance glass and windows on energy economics, daylighting, radiant comfort, energy modeling, UV blockage and condensation resistance. He initiated the on-site remanufacture of all 6,514 windows of the Empire State Building. Robert was among the founders of Southwall Technologies in the late 1970s, then established Alpen in Colorado in 1981. He presently works with Southwall Insulating Glass on Heat Mirror projects worldwide. Robert holds Princeton engineering and Stanford business degrees.


adam cohen


As an active design/builder and green building expert, Adam Cohen is a leading North American passive house practitioner whose innovative work on market rate delivery of commercial high performance building has made his expertise sought-after for projects across North America. As a recognized national leader in the Passivhaus movement he has presented technical papers at both national and international Passivhaus conferences. His leadership in commercial Passivhaus design has made him a sought after speaker, consultant and teacher of advanced courses in Passivhaus ultra-low energy design.


chris corson


Chris Corson is the Owner and Technical Director of EcoCor based in Belfast, Maine.

Kevin Davey

kevin davey


Kevin Davey joined BluPath as an Intern Architect in April 2014 and quickly became indispensable. He is facile with Sketchup and the DesignPH interface, a technical draftsperson, an excellent researcher, and is completely engaged in learning, more about Passive House best practices.

Jordan Dentz head shot

jordan dentz

Levy Partnership

Jordan Dentz is vice president of The Levy Partnership, Inc. (TLP), a research and consulting firm specializing in building performance and energy efficiency with an active Passive House practice including design and field testing. Mr. Dentz has shepherded many Passive House projects through certification as well as numerous other high performance buildings. Jordan holds a Bachelors in Architecture and a Masters in Building Technology, both from MIT. He has more than 20 years of experience as a consultant and technical advisor to the building industry, including architects, developers, contractors, builders, and building materials manufacturers and suppliers. His work has focused in the area of building energy efficiency, electric demand response, and residential systems building including factory built housing. In his capacity at The Levy Partnership, Mr. Dentz is senior project manager for the ARIES Collaborative, one of the research teams that comprise the U.S. Department of Energy’s Building America program; and for the Systems Building Research Alliance, the research arm of the modular and manufactured home industry. Mr. Dentz has authored numerous publications and presented research results at conferences and seminars nationwide. Mr. Dentz is a Certified Passive House Consultant (CPHC®) and RESNET certified Home Energy Rater. He was a member of the NAHB/ICC Consensus Committee that developed the National Green Building Standard. Since 2009 Mr. Dentz has been the lead Passive House consultant on numerous Passive House projects including the Hudson Passive Project, the first to be certified in New York State, and involved with the construction or analysis of many others. He holds a M.S. in Building Technology and a B.S. in Architecture, both from the Massachusetts Institute of Technology.

ryan dick

ryan dick


Ryan received his masters degree in Architecture with an emphasis in Structural Engineering at the University of Illinois at Urbana-Champaign. He was awarded a prestigious Luce Scholars Fellowship and relocated to Shanghai, China to teach sustainable design at Tongji University. While teaching, Ryan co-founded GIGA循绿 (Global Innovations Green Algorithms), the world’s first cloud-based material management platform which ranks building materials according to their health and ecological impact. At GIGA循绿, Ryan continues to build business solutions that drive demand for environmental regeneration. Ryan is an avid researcher of Indoor Air Quality (IAQ) and its affect on building occupant health and wellness. Ryan lectures around the world about regeneration, health and wellness and social enterprise. He also regularly mentors MBA teams in the exploration of social enterprise within the green building sector. Ryan currently resides in Chicago.

Madison Dozzi-Perry

madison dozzi-perry

Ryerson University

Madison has professional and academic experience in residential design and development of livable communities. Madison’s research interest are focused on how Indigenous cultural beliefs can be translated into an architecture of healing through a phenomenological experience of space and participatory architectural processes.


kevin dreyfuss-wells

RDL Architects

Kevin Dreyfuss-Wells, RA, NCARB, LEED AP, has emphasized place making and rejuvenation of urban fabric throughout his career, aiming to produce rich designs that respond to context sensitively and simply. As a Senior Project Manager and Architect at RDL, Kevin manages design teams with a focus on housing at multiple scales and types. His housing experience includes market-rate single-family homes, townhomes, apartments, and condominiums, along with LIHTC affordable housing projects in several states.

His interest on innovative design has earned him a reputation as a ‘green pioneer’ in Northeast Ohio. Kevin’s integration of sustainable design principles has contributed to projects earning a broad range of certifications, including the first LEED Neighborhood Development Stage Two project and the first LEED for Homes Gold multi-family building in Ohio, along with certifications in the LEED Commercial Interiors, LEED New Construction, Enterprise Green Communities, and the National Green Building standard.

Kevin has a unique depth of experience in adaptive re-use and historic preservation. He has designed over 3.3 million square feet of restoration projects such as hotels, apartments, and retail spaces, including the renovation of three of Cleveland’s historic downtown arcades.
Kevin has been a speaker at the USGBC Greenbuild national conference, APA conferences, and a guest lecturer at Kent State and Cleveland State Universities. Kevin was a US Peace Corps volunteer in Western Samoa, and believes in continuing a tradition of life-long service, both in attention to client needs and as a member of numerous non-profit and community boards.


jim eby

The Community Builders, Inc (TBC)

James Eby joined The Community Builders, Inc. (TCB) (, in April 1997. His title is Senior Project Manager in the real estate development division, working in TCB’s Mid-Atlantic Region. Highlights of his tenure at TCB include project management of East Liberty Place, a mixed-use, mixed-income, LEED Gold, re-development project creating a western gateway to Pittsburgh’s East Liberty Central Business District, plus a HOPE VI neighborhood revitalization project in Coatesville, Chester County, PA, involving project management from inception through construction completion and rent-up/sales. TCB’s role there included master planning, infrastructure project management, and three housing components (rental and home sales). Current projects underway include the Hillcrest Senior Residences in Pittsburgh’s South Hills (Passive House Institute US Pre-Certified), and a Rental Assistance Demonstration program conversion of TCB’s New Pennley Place. Mr. Eby oversaw construction and rent-up of a 61- unit housing and historic tax credit project for senior citizens, also in Coatesville.

He provided interim management for four TCB projects in Philadelphia. Mr. Eby was Vice-President/Director of Development at Housing Development Corporation (HDC), Lancaster, PA, for 17 years. He directed or had substantial participation in development of 60 multi-family rental projects of 1481 total units, two single-family for sale projects of 21 units, ancillary commercial space and an office building. Projects involved rental, co-operative, condominium and fee-simple ownership, general occupancy and senior citizen, urban, suburban and rural, low-rise and mid-rise, new construction, rehabilitation and adaptive re-use, and historically-certified buildings, all ranging in size from 3 units to 150 units.

Mr. Eby is a graduate of Franklin and Marshall College, Lancaster, PA, holding a BA Degree, cum laude, in Government. His community service includes: current Board Member, Lancaster County Housing and Redevelopment Authorities; current Chair, Lancaster County Land Bank, founded June 2016; Vice-Chair and founding Board Member, Community Basics, Inc., a Lancaster-County-based community housing development corporation; Chair of the Lancaster Parking Authority; founding Board Member, Livable Communities Work Group, a Lancaster-County- based organization seeking to develop and/or support model “neo-traditional” communities; Chair of the Façade [Grant] Committee for Coatesville, PA; founding Board Member, Harb-Adult, Inc. [now Transitional Living Center], serving homeless families in Lancaster, PA; founding Board Member, Lancaster Housing Opportunity Partnership; Board Member, Historic Preservation Trust of Lancaster County; and founding Board Member of what is now called the PA Housing Alliance, a state-wide advocacy organization.

His office is in Lancaster, PA, and he lives in Lancaster and Philadelphia, PA.


prudence ferreira


Prudence Ferreira is a partner in Passiv Science, a consulting partnership focused on large scale multifamily, commercial and institutional passive building projects. She heads the firm’s energy modeling team and has unique expertise and experience with WUFI Passive. Ms. Ferreira is also an instructor for the Passive House Institute US and teaches CPHC training and WUFI Passive Modeling around the US. She has helped train over 500 CPHC’s and is a core contributor to CPHC training curriculum. Prudence is a founding member of the PHIUS Technical Committee and has consulted on 30+ passive house projects across 7 different climate zones.

 MF headshot 2016

matt fine

Peabody Architects

Matt Fine, LEED AP, CPHC, has over 20 years of architectural practice experience and has spent the last ten years in affordable multifamily housing work. Following his 2010 PHIUS Certified Passive House Consultant (CPHC®) training, Fine did pioneering work in high performance multifamily housing and was the project leader for ZA+D passiv’s Weinberg Commons project (projected PHIUS+ certification in 2016), a retrofit of 36 affordable dwelling units within three 1960’s era buildings, and the first PHIUS+ retrofit of affordable housing in the region. As a CPHC, Fine has also led a variety of high-performance single family home projects. He collaborated in the design of the Arlington Passivhaus project, and was consultant to Parsons The New School for Design on the 2011 Solar Decathlon entry known as Empowerhouse. He also captained Habitat for Humanity’s PHIUS+ Certified Ivy City Passive Townhouse project through its duration.


mark flynn

Ryerson University, Student

Mark has experience in building science and civil engineering. He has particular interest in low energy homes and was introduced to the concept of ‘Passive House’ while on exchange in Norway. His interest in sustainable buildings has led to his current research, investigating the hygrothermal performance of a highly insulated wall.


philip ford

Sota Construction Services, Inc

Phil Ford is a PHIUS Certified Builder and a leading member of the Sota Construction Services team. He has managed a diverse array of complex projects throughout his tenure with Sota, with project budgets up to $26 million. He brings diverse knowledge base to the team atmosphere, having managed projects ranging from new construction to substantial renovation, including work with historic restoration, elderly and nursing care facilities, design build projects, PHFA and HUD funded projects. Phil has in-depth knowledge of many current project management control systems. Prior to Sota Construction, Phil managed condominium projects and residential planned communities in and around Washington D.C. He is a graduate of Penn State University. His diverse experience, work ethic, and team mentality are distinct contributions to the Sota Team atmosphere.


richard freeh

Mayor’s Office of Sustainability, City of Philadelphia

Rich Freeh is the City Energy Project Manager for the Mayor’s Office of Sustainability (MOS) in the City of Philadelphia. In this capacity, he is responsible for leading Philadelphia’s initiatives as part of the City Energy Project, which is designed to improve performance in the city’s largest privately-owned buildings. He also supports Philadelphia’s climate adaptation planning efforts and is a primary author on the city’s Greenworks sustainability plan updates. Prior to taking on this role, Freeh administered the city’s energy benchmarking program for non-residential buildings. Before coming to MOS, he worked in the public policy consulting and publishing sectors. Freeh holds a Bachelor’s degree from the University of Pittsburgh and a Master’s in City Planning from the University of Pennsylvania.


david geary

Power Analytics Corporation

David Geary, P.E., is a licensed professional electrical engineer with a distinguished career spanning more than 30 years. As Vice President of Power Delivery at Power Analytics Corporation, he provides technical engineering innovation, vision, and leadership for the use and development of alternative energy solutions. Geary is considered one of the pioneers and experts in alternative energy integration with energy storage in DC microgrids and is working with many companies to develop energy storage, alternative energy sources, and DC power distribution system components to support future energy needs. He is a multiple patent holder, a key contributor to evolving world-wide standards and codes, and is an expert speaker and presenter at many industry events, conferences, and policy planning summits. Geary holds a Bachelor of Science Degree in Electrical Engineering from the University of Maryland, College Park, and is a registered professional engineer in the jurisdictions of Maryland, Virginia and Washington, DC.

Alan gibson-001

alan gibson

G O Logic LLC

Alan is a carpenter, general contractor, Certified Passive House Consultant, and Certified Passive House Builder. He formed G O Logic LLC, a 28-person architecture and construction company, in 2008 with architect Matthew O’Malia. The company has certified 6 passive house buildings to date and has designed and built over 65 residential units and institutional projects since its founding. He is a member of the Passive House Alliance US (PHAUS) Council and is a regular speaker at Passive House conferences. He lives with his family in Belfast, Maine.


sichen guo (nancy)

Beijing S&T Science & Technology & Culture Communication Co., Ltd.

Sichen Guo (Nancy) is a project manager at Beijing S&T Science & Technology & Culture Communication Co., Ltd., the international organization of members of the Chinese Passive Integrated Building Materials Industry Association and China Passive Building Alliance. The organization promotes passive house development in China and throughout the world by building up global communication platforms between building and materials industrial experts, professors, and entrepreneurs. S&T has organized Chinese delegations to attend the North American Passive House Conference and International Passive House Conference and visit relevant companies for many years. Their vision is to bring back fresh air and blue skies to China.

Sam_Hagerman_Headshot_sm copy

sam hagerman


Sam Hagerman co-founded Hammer & Hand over 20 year ago and led the company until late 2015, developing and directing the company’s deep commitment to high-performance building and passive house.  Hagerman’s background as a carpenter and his passion for building science led him to his current path as a building and envelope performance consultant.  He now runs the consulting firm Hagerbuilt, where he is currently focusing efforts on high-performance building projects in the country of Bhutan.


elizabeth hahn

Pennoni Associates, Inc

Elizabeth Hahn is an engineering specialist with the Energy & Sustainability Division at Pennoni Associates’ Philadelphia headquarters. She has experience supporting the team engineers in their work including MEP/Energy site surveys, preparing energy models, preparing solar feasibility study layouts in AutoCAD, Energy Star and ASHRAE Level I and II energy audits, LEED project management, EECBG and ARRA/Pennsylvania Energy Harvest Grant management, New Jersey Clean Energy Pay-for-Performance project administration, HUD PHA EPC administration, researching project funding options and new trends and technologies in the areas of energy efficient MEP, green building, green schools, clean energy, water management, energy benchmarking, and corporate sustainability. Her current projects include infrared thermography surveys, solar feasibility studies, energy audits, project funding and technology research, and GHG emissions studies, as well as numerous other energy and sustainability related projects. Additionally, she develops and executes Pennoni’s own corporate sustainability programming.

© Matt Greenslade/

greg hale

Senior Advisor to the Chairman of Energy & Finance

Office of Governor Andrew M. Cuomo

Greg Hale joined the administration of Governor Andrew M. Cuomo as Senior Advisor to the Chairman of Energy & Finance in May 2013, where he focuses on clean energy finance and the development and execution of the Governor’s signature energy policy– Reforming the Energy Vision (REV). Mr. Hale was responsible for overseeing the establishment of the $1 billion NY Green Bank, and was also heavily involved in the design and launch of the State’s new biothermal initiative – Renewable Heat NY. He was the lead author of NY’s 2015 State Energy Plan, and currently leads an inter-agency initiative developing clean energy solutions for the low to moderate income sector Prior to joining the Governor’s Office, Mr. Hale was the Director of Efficiency Finance at NRDC’s Center for Market Innovation, where he focused on developing the market for energy efficiency building retrofits in the commercial, multi-family and institutional property sectors. At NRDC, Mr. Hale worked closely with financial institutions, real estate owners/occupants, governmental entities, and energy and technology companies to make the retrofit business case clear to building owners and occupants, and develop and scale various innovative financing mechanisms for the retrofit marketplace. His work also included an emphasis on green leasing practices. Mr. Hale is a founding board member of the New York City Energy Efficiency Corporation, where he currently chairs the Audit & Finance Committee, and he served on the steering committee of the PACENow Coalition. Prior to NRDC, Mr. Hale spent 17 years in the real estate industry, first as a real estate lawyer at Skadden, Arps, et al., and then as co-owner and general counsel of Cirque Property L.C., a real estate investment company based in Salt Lake City, Utah. Mr. Hale is a graduate of Dartmouth College and The University of Michigan Law School.


teresa hamm

College of Architecture + Design, Virginia Tech

Teresa Hamm, CPHC®, PHIUS Certified Builder, is a second year graduate student in the College of Architecture + Design at Virginia Tech. She has 9 years of experience working on high performance affordable housing projects, including Empower House, Washington, DC’s first passive house.

Chris Hanson

chris hanson


Chris acts as Principal in Charge of many of our large projects and is our resident Sustainability specialist. He works with our clients, architects, HGC project managers, and trade contractors to ensure that every job is estimated and executed in accordance to its design and specifications. After earning his Bachelors in American Studies from Hobart and William Smith College, Chris obtained a Master’s Degree in Education from the University of Pennsylvania. He is a LEED accredited professional through the US Green Building Council, a PHIUS Certified Builder through the Passive House Institute US, and a Green Advantage certified practitioner through the Delaware Valley Green Building Council (DVGBC). Chris also participates the Delaware Valley Green Building Council and is a board member of the Delaware Valley chapter of the Association for Preservation Technology. He lives with his wife and two children in Gladwyne PA. He has been observed sneaking out of the office early to satisfy his passion for fly fishing.


mike harsma

South Dakota Housing Development Authority

Mike Harsma, CPHC®, is the Director of Single Family Development at South Dakota Housing Development Authority. He holds a degree in Accounting and Business/Management from Black Hills State University.

James hartford cropped

james hartford


Partner James Hartford’s work is rooted in technical expertise and design sensibility. In addition to his excellent design skills, he contributes his building envelope expertise and leads the sustainable design process for each of the firm’s projects. He is currently working on several Passive House projects that range from single family retrofits, multi-unit urban row houses, and an organic hard cider mill in the Catskills. James is the founder and the Acting President of Passive House Alliance US- Hudson Valley Chapter. In that capacity James has brought Certified Passive House Builder instruction to Newburgh, NY, and Certified Passive House Consultant training to Schenectady, NY- with significant funding from NYSERDA. These programs were the first of their kind in Upstate NY. Prior to joining River Architects, James was a Project Architect with Rogers Marvel Architects and James Gainfort AIA Architect, where he contributed to award-winning renovation and rehabilitation projects such as the Pratt Institute School of Architecture, Carnegie Hall, the Governor’s and Admiral’s Houses on Governors Island, and the Brooklyn Museum Entrance Reconstruction & Water Fountain Project. James earned his Master of Architecture from the University of Buffalo and a Bachelor of Arts in English and Fine Arts from the University of Albany. He has studied abroad in Germany and in England, and has taught upper level design studios at Kyonggi University’s Graduate School of Architecture in Seoul, South Korea.


michael hindle

CPHC®, Certified Passive House Builder Passive to Positive

Michael Hindle began his inquiry into sustainable architecture while teaching a first year Architecture Design Studio at Miami University of Ohio in 2003. Beginning in 2008 he worked with Brennan+Company Architects in Catonsville, MD and researched ways to deepen the firm’s commitment to environmental practice, leading to his involvement in the Passive House community. Michael became a Certified Passive House Consultant (PHIUS) in early 2010, and became a Certified Passive House Builder in 2014. He is owner and principal of Passive to Positive, and has consulted on Passive House, zero-energy, and Living Building Challenge projects. His projects include single family and multi-family residential, and small commercial projects from Massachusetts to Washington DC. He has expertise in both new construction and retrofits, including historic building retrofits.


michael hobbs

PahRoo Appraisal & Consultancy

Michael Hobbs, SRA, Certified General Appraiser, LEED GA, is the President of PahRoo Appraisal & Consultancy. For more than two decades, Hobbs has been employing his energetic style to the industries of Real Estate, Energy Efficiency, and Entrepreneurship/Private Equity. He has over 10 years of appraisal experience in the Chicago area. Previously, he has worked as as a real estate broker, property investor, owner, and landlord. His areas of expertise include: Commercial and Residential Real Estate Valuation and Appraisal, High-Performance and Energy-Efficient Properties, Green and Healthy Buildings, Real Estate Restructuring and Repositioning, Strategic Default Options and Implications, Portfolio and Investment Analysis, Legal Consulting and Expert Witness Testimony, and Private Equity Investing / Start-up Mentoring. Hobbs and his team are the ones that get called in when people have a valuation problem they want to solve or have experienced a sub-par appraisal and need competent, expert professionals to address and resolve the matter.

david holtzclaw

david holtzclaw

Transduction Technologies

David Holtzclaw received his BS and MS in Aerospace Engineering from Purdue University and PhD in Biomedical Engineering from the University of Cincinnati in 2001. Previously he worked at NASA Johnson Space Center in Houston, TX, Emory University in Atlanta, GA, and the University of Nebraska Medical Center. After careers in the aerospace and biomedical industries, he now runs Transduction Technologies, a small mechanical engineering company providing building simulation, modeling, mechanical design, and analysis. We specialize in low-energy building solutions and building commissioning.


graham irwin

Essential Habitat

Graham Irwin, AIA, CPHC®, LEED AP, is a principal of Essential Habitat, a Northern-California-based architecture firm focused on healthy, high performance, sustainable buildings built to the Passive House standard. He has worked on numerous single-family, multi-family and commercial Passive House projects throughout the US, including the first certified Passive House in California, the first certified Passive House retrofit in the US, and the first certified multi-unit Passive House in the US. Graham has worked in the construction industry for over twenty years, with experience that runs the gamut from carpenter and contractor to architect and building scientist. He has a degree in physics from Claremont McKenna College with additional studies in engineering, architecture, and economics at Harvey Mudd College and UC Berkeley. Graham was among the first Certified Passive House Consultants (CPHC®) trained in the US, and the first in California. He is a licensed architect and general contractor in the state of California.


rolf jacobson

Research Fellow, Center for Sustainable Building Research, University of Minnesota

Rolf Jacobson is a Research Fellow at the Center for Sustainable Building Research, University of Minnesota. He recently rejoined the CSBR after working with the NorthernSTAR Building America research team. Rolf has a strong interest in building science, particularly in the areas of residential energy efficiency, building assemblies, and moisture performance. In 2010, Rolf traveled to Norway on a Fulbright fellowship to study the building science of Passive House envelopes optimized for cold climates. While there, he used energy and moisture modeling tools such as WUFI and THERM to investigate and evaluate a wide range of residential building assemblies. More recently, Rolf has helped conduct research on a variety of residential energy efficiency and building enclosure topics such as an in-situ study of residential ground source heat pumps and insulation retrofit approaches for basements.


achilles karagiozis

Director of Building Science at Owens Corning, PHIUS Technical Committee

Achilles Karagiozis is director of Building Science at Owens Corning, where he is charged with accelerating energy efficiency improvements in the built environment. Prior to joining Owens Corning, Karagiozis worked at the prestigious Oak Ridge National Laboratory, where he was a distinguished research engineer and hygrothermal project manager. He was instrumental in the launch of a number of innovative construction material and system products, the development of design guidelines, software tools and code changes. Karagiozis received his Ph. D. from the University of Waterloo in Ontario, Canada, with work at the von Karman Institute in Fluid Dynamics in Saint-Genese Rode, Belgium. He received his M.Sc.E. and B.Sc.E. from the University of New Brunswick in New Brunswick, Canada.


scott kelly


Beginning his career with historic preservation and adaptive re-use projects, Scott became acutely interested in the design elements and construction methods that cause buildings to endure and be more sustainable. Since founding Re:Vision in 2002, Scott has led Re:Vision’s interdisciplinary team in designing or High Performance Building consulting on hundreds of innovative green projects, many of which are “firsts” of their kind. Scott is a champion of green building standards and verifications, including LEED, Living Building, Net-Zero Energy, and PassiveHouse and competed projects in all of them. Scott’s engaging and collaborative approach has inspired numerous others to incorporate green thinking into their buildings and lifestyles. Scott was longtime Chair of Philadelphia AIA Committee on the Environment, is Senior Fellow and Curriculum Advisor within Philadelphia University’s Masters in Sustainable Design program, and is a founding Board Member of Delaware Valley Green Building Council (DVGBC). For his advocacy and design work, Scott was awarded the Philadelphia AIA’s prestigious Young Architect Award.


bjoern kethorn

Head of Application Engineering Department at Hanno Werk GmbH & Co. KG, Laatzen, Germany

Education: Carpenter; University degree in Timber Engineering Specialization:

  • Bauhaus University of Weimar – Expert for Thermal and Moisture Related Construction Damages
  • Bauhaus University of Weimar – Expert for Sound Insulation and Acoustics


  • Co-author: “Manuel for the planning and installation of windows and doors” [] [Germany]
  • Co-author: “FFF Info Sheet 04.04 Window Connecting Joints” [] [Switzerland]
  • Co-author: „WTA Info Sheet E-6-9/11 Air Tightness for Existing Structures Part 1 to 3” [ ][Europe]
  • Co-author and conceptual work on a study to assess the “Suitability of Window Connecting Joints for Passive Houses” executed by BBS Institut Wolfenbuettel – Prof. Dr. H.P. Leimer

gary klein

Gary Klein & Associates

Gary Klein, President of Gary Klein & Associates has been intimately involved in energy efficiency and renewable energy since 1974. One fifth of his career was spent in the Kingdom of Lesotho, the rest in the United States. Mr. Klein has a passion for hot water: getting into it, getting out of it and efficiently delivering it to meet customer’s needs. After serving 19 years with the California Energy Commission, he has provided consulting on sustainability since 2008. Mr. Klein received a BA from Cornell University in 1975 with an Independent Major in Technology and Society with an emphasis on energy conservation and renewable energy.


stefan knust

Ennead Architects

Stefan Knust is an Associate and the Director of Sustainability at Ennead Architects. He is a Certified Passive House Consultant (CPHC®), board member on the New York City Chapter of the AIA Committee on the Environment, and has served on the Executive Board of the New York Passive House Chapter and was a founding member of the Boston Chapter. Knust has over twenty years of experience in the design and construction of complex institutional projects that serve the community and student learning. With a strong background in retail, commercial, institutional and residential projects, he has developed an intimate understanding of the many intricacies involved in serious and meaningful urban work. He received a Bachelor of Science in Architectural Studies from the University of Illinois and a Master of Architecture from the University of Pennsylvania.


kerry langley

Prime Lending

Kerry Langley has been a professional mortgage banker for the past 30+ years. With a focus on new construction and renovation financing, he has personally negotiated over $1.3 billion in residential mortgage loans. His experience includes roles in loan production ranging from Sales Manager to Construction Permanent Lending Manager to Vice President/Private Mortgage Banking Team Leader and Sustainable Lending Manager. While working at EarthCraft House / SouthFace Institute in Atlanta, Langley developed the High Performance Lending® (HPL) software program which analyses each and every financial variable (including energy/utility costs) associated with purchasing and owning a home to develop comparison modeling which estimates the Total Cost of Owning® (TCO) for each type of home. The HPL platform has originated approximately $100 million in residential loans since its inception.


jim larsen

Cardinal Glass

Jim Larsen is a mechanical engineer by training with 35 years of experience in the research and development of glass products for windows. He has been involved with the National Fenestration Rating Council (NFRC), EEBA, and MEEA, a member of the numerous state energy code committees, and ASHRAE TC2.1, TC4.5, 90.1, and 90.2 committees, and is a recognized AIA education provider. Under his direction, Cardinal Glass has built and monitored multiple test houses across the country to evaluate the energy impacts of new glass technologies.  These fully instrumented real world test houses have also been utilized by Building America research partners. The integration of the latest glass technologies with improvements to the performance of other building components is demonstrating the efficiencies possible in today’s buildings and provides validation on the building practices needed to reduce energy consumption by 50% and more.


natalie leonard

Passive House E-Design

As the first Certified Passive House Consultant (CPHC®) and Builder in Canada, Natalie is a recognized leader in the Passive House movement in Canada. She brings her engineering background, hands on design and construction experience, a practical and efficient approach to building and a commitment to reduce our energy footprint to all her projects. As the founder of Passive House E-Design, Natalie is dedicated to promoting the Passive House Concept and creating cost effective, super efficient buildings for the future. She is passionate about finding practical, cost effective and locally viable solutions to help move Passive House into the mainstream. Passive House E-Design has consulted on over 40 Passive House projects including 5 multifamily buildings. She has presented several years at the Green Build Atlantic and North American Passive House conferences.

Juan Levy

juan levy

FutureFit Building/Epiphyte Builders

Juan Levy is the President of FutureFit Building LLC/Epiphyte Builders LLC.


john loercher

River Architects

John Loercher, CPHC® is a Project Architect at River Architects.


alex long


Alex Long is Vice President and co-founder of Build Equinox, where he oversees control and monitoring hardware and software design for Build Equinox products. He holds a Bachelor of Science in Mechanical Engineering from the University of Illinois at Urbana- Champaign.;

macbride headshot

charles macbride

South Dakota State University Department of Architecture (SDSU DoArch)

Charles MacBride, AIA, NCARB, is an architect and assistant professor at the South Dakota State University Department of Architecture (SDSU DoArch). He has been in practice for over 20 years, with specializations in urbanism, planning, and housing/residential architecture. He is the department’s Professional Program Coordinator, and has taught previously at Iowa State University and the University of Colorado Denver. As only the second full-time faculty at the new Department of Architecture at SDSU, MacBride has been working to establish the new program and design culture. Founded in 2010, DoArch is the first-ever professional program of architecture in the state, and is expected to receive full NAAB accreditation in 2016. He is the director of the DoArch Community Learning Center, a teaching and outreach program that connects design students with small, underserved cities across South Dakota. Additional roles include coordinating student scholarships, advising, AIAS, and graduate study. He is the university’s IDP Education Coordinator and is actively involved with the South Dakota AIA. His research focus is on small architectural practice, urbanism and community. He has had numerous publications and grants in these areas, in addition to writing and research on design education and history. Most recently he has received a $591,000 grant from the South Dakota Governors Office of Economic Development entitled “The South Dakota Passive Housing Initiative: Model Houses & Community Housing Research, Design, and Construction.” MacBride received a B-Arch from Penn State University and a Masters in Advanced Architectural Design from Columbia University. He received a 2013 AIA South Dakota Merit Award for the Mobridge (SD) Riverfront Masterplan, and was awarded for Excellence in Teaching at the University of Colorado Denver in 2008. He lives in Sioux Falls, SD with his wife Dee Ann and son Rian.


chris mahase

Director of Sustainability, NYC Department of Housing. Preservation & Development

Christopher Mahase has been the Director of Sustainability at the New York City Department of Housing Preservation and Development (HPD) since January 2011. HPD is the largest municipal development agency in the US, responsible for the development and preservation of affordable housing. Mahase launched a green building initiative for HPD in 2011, which affected all new construction and substantial rehabilitation financed by the Agency. He was instrumental in the development of a green physical needs assessment tool use for all moderate rehabilitation financed by HPD. Mahase put in place building performance tracking protocols to assess performance of financed developments. He is currently working on various passive house initiatives to increase prevalence and feasibility in New York City. He holds a Masters in Urban Environmental Systems Management from the Pratt Institute School of Architecture, along with various professional certifications from the Building Performance Institute (BPI).

McLaughlin - PHIUS headshot

gwen mclaughlin

TRC Solutions

Gwen McLaughlin is the Pipeline Manager for New York State Energy Research and Development Authority’s (NYSERDA) Multifamily New Construction Program (MF NCP). MF NCP supports developers serving multifamily high-rise new construction and gut rehabilitation projects in New York State. The program offers technical support and guidance to project teams aiming to achieve higher levels of energy performance and health & safety from planning through construction. MF NCP’s multi-tiered incentive structure focuses support toward promotion of higher levels of comprehensive building and energy performance, encouraging developers to surpass even passive house thresholds. McLaughlin brings over a decade of experience in program management, field investigation, and green building consulting to her role in MF NCP. Her responsibilities include program development, quality assurance, and coordination with NYSERDA, program applicants, and technical consultants. She is a PHIUS+ Verifier.


chris mctaggart

PHIUS QAQC Program Manager, The BER

Chris McTaggart of Building Efficiency Resources (BER) is the QA/QC manager in support of the PHIUS+ Rater program. He leads the PHIUS+ Rater and the Large Building Verification training programs. He is Co-Principal at Building Efficiency Resources (BER). BER is a national third-party RESNET QA Provider working with independent rating companies throughout the United States. Chris brings a background rich in research, analysis and logic developed both through his professional experience and formal education at Michigan State University.

meagher 10-8-14

kevin meagher

President, Power Analytics

As President for Power Analytics, the company is focused on the three most fundamental pillars of future of distributed generation, microgrids and data centers, (1) design and operation; (2) secure communications and (3); advanced optimization and control. Prior to becoming President, Mr. Meagher served as Chief Technology Officer for the privately held corporation. Under his guidance the company introduced industry-leading capabilities for energy management and pattern recognition and transitioned the Paladin technology to a commercially viable platform, which today includes the current generation of Paladin DesignBase™ electrical design software, Paladin Live™ mission critical management software, and the micro grid controller. Kevin is the author and creator of the Power Analytics™ Energy Alignment Process and has to his credit more than 15 patents in analytical processes. He has authored numerous papers on power, energy, and high availability architectures and over the past 25 years has lead development organizations and provided strategic planning for companies including Eaton, Invensys, Computer Associates and IBM. Kevin was previously named a Green Tech Media’s list of the top 100 people you must know in Smart Grid. Kevin has undergraduate degrees in biochemistry and business and an MBA from the University of Colorado.


linda metropolus


Linda Metropulos serves as Director of Housing and Neighborhood Development Downtown Sustainability/Housing Development at ACTION-Housing, Inc.


sebastian moreno-vacca

a2M be

As an architect, a professor (ULB Brussels) and publisher, Sebastian Moreno-Vacca has successfully championed passivehouse building in his native Belgium. Today, passivehouse is the Brussels Region building standard thanks in large part to Sebastian’s efforts.


julie torres moskovitz

Fete Nature Architecture

Julie Torres Moskovitz PLLC, Certified Passive House Tradesperson, LEED AP, AIA is Principal and Architect at Fete Nature Architecture (FNA) and Fabrica718 based in Brooklyn, NY. FNA studio is a vital, collaborative firm whose process is founded in research and investigation of new ways to inhabit the urban fabric. This method of working is informed by an aptitude for green technologies, materiality and unique fabrication methods, within the realms of sustainability and social consciousness. Moskovitz is the author of The Greenest Home: Superinsulated and Passive House Design published in 2013 by Princeton Architectural Press. In 2014 she won an International Passive House Design Award for Tighthouse; the first certified Passive House in NYC. Moskovitz can’t go backwards and undo all of her passive house learning so each project, whether passive house commissioned or not, incorporates best practice energy-efficiency aspects.


ben newell


Ben Newell is President and co-founder of Build Equinox. He has attended several NAPHCs since 2008 when he gave a presentation at the Duluth, Minnesota conference on initial laboratory results for his company’s CERV product. Newell holds a Bachelor of Science in Mechanical Engineering and an MBA from the University of Illinois at Urbana-Champaign.

Brandon Nicholson-001

brandon nicholson

Nicholson Kovalchick (NK) Architects

Brandon Nicholson is a founding principal of Nicholson Kovalchick (NK) Architects. He is passionate about reducing the impact of buildings on global climate change, utilizing his research and development projects to establish a cost effective method to deliver net-zero energy buildings now. Under Brandon’s leadership, NK Architects has evolved to become a top firm in the region focused on high-performance, multifamily projects designed to zero energy and Passive House building standards. He leads a team charged with establishing an innovative development proforma that incorporates Passive House design techniques, tax credits, utility charges, and energy and maintenance cost savings to create a better building with a better return. Brandon was instrumental in Seattle’s acceptance of Passive House as a green building incentive and currently serves as a board member of the North American Passive House Network and the president of Passive House Western Pennsylvania. He and his team have been honored with the 2014 AIA Housing Award for its design of the city of Seattle’s first certified Passive House; showcased in GreenBuilder Media for its design of “Home of the Year” award-winner, Stream Belmont; and named a Circle of Excellence member for its exceptional, forward-thinking approach to management and design. Brandon was also the recipient of the AIA’s 2011 Community Service Award for his diligent policy work to improve Seattle City building codes by incorporating green building systems as criteria for development (FAR) bonuses.

 Head Shot_Alejandra Nieto-001

alejandra nieto


Alejandra Nieto has been a building science specialist at ROXUL EDC since 2013. She received her Master in Building Science from Ryerson University; with a background in architecture and design.  She is currently working towards attaining her Passive House Designer certification. Her experience in the building science community includes consulting on building enclosure solutions, advancing the research of enclosure system performance at ROXUL; and promoting energy efficient and good building science practices. She is an active member in multiple ASHRAE technical committees; and is fluent in different modelling and simulation software including AutoCAD, WUFI, Heat 3, and THERM.


shona o’dea

DLR Group

Shona’s focus on efficiency and indoor environmental quality is an important component of DLR Group’s Building Performance team, supporting the firm’s pursuit of sustainable building design and operation. Her primary goal is to challenge people to think differently about the way they design and operate buildings; advising teams from sustainable goal setting, to efficient operations. She uses building simulation to help designers quantify energy savings and understand the interactions of building design with the mechanical systems and with the environment.

“I envision a redefinition of the term sustainability into a more data-driven, scientific-centered process – where building performance is verified. I believe it is important that we as an industry continue think differently about design, to leverage sustainability and high performance as the smart thing to do with respect to economic viability, in addition to the responsible thing to do for the environment.”

Born and raised in Ireland, Shona earned an honors degree in Building Services Engineering from the Dublin Institute of Technology, Ireland’s leading sustainable building engineering program, and moved to the Midwest as part of the Atlantis dual master’s program in Sustainability, Technology and Innovation at Purdue University. She currently serves as Chair of Young Engineers of ASHRAE Illinois Chapter, Board Member for the Chicago Chapter of IBPSA and Vice Chair of Sustainability Committee, and Board Member for Chicago Chapter of IFMA.

james ortega

PHIUS+ Certification Staff

James Ortega joined PHIUS in February of 2015 as a member of the Certification team, where he provides design review and energy modeling services to evaluate project qualifications for PHIUS+ Certification. Ortega works closely with the submitting CPHC to provide feedback on questions pertaining to energy modeling and building plans. He also provides consulting services on static and dynamic energy modeling in WUFI Passive and THERM, and spearheads energy modeling deliverables on feasibility studies for projects interested in pursuing PHIUS+ Certification. James holds a Bachelor of Architecture degree from the Illinois Institute of Technology in Chicago, and is currently pursuing his architectural licensure.

Yasmine Parker

yasmine parker

Prairie View A&M University

Yasmine Parker is currently a senior at Prairie View A&M University, working towards two bachelor’s degrees: Architecture and Construction Science. She is currently the Vice President of university’s chapter of the Women’s Transportation Seminar, and a member of AIAS and CSI. Yasmine assisted her team, Green Future, in winning the 2016 Race to Zero student competition, and is currently working towards her CPHC licensure.


brian patterson

EMerge Alliance

Brian T. Patterson is President, a founder, and official spokesperson of the EMerge Alliance, an open non-profit industry association leading the rapid adoption of safe DC power distribution via DC microgrids. He is a 30 plus year veteran of the electrical and electronics industry, has an extensive technical and work history in electronics, fiber optics and building electrical systems technologies, and holds multiple patents in those fields. Patterson is currently Managing Director of B. L. Coliker Associates, a market and technology consulting firm. He is the US National Council International Electrotechnical Commission’s System Evaluation Group 4 on Low Voltage (under 1500V) Direct Current.  He is also past chairman of the NIST Smart Grid Interoperability Panel Distributed Renewable Generation and Storage Distributed Energy Work Group Microgrid Subgroup.

Patterson has spoken at numerous national and international industry, government, and academic forums, and has authored articles for major industry and professional trade magazines.



david peabody

Peabody Architects

David Peabody, LEED AP, CPHC, has led Peabody Architects in Alexandria, Virginia since 1992, where he has designed numerous homes and additions. Witnessing and participating in the growth of sprawl in the suburban DC area through the 1990’s led him to awareness that the way building is done today is not sustainable, and a conviction that architects cannot sit on the fence with regard to environmental issues. Since committing the practice to sustainable design in 2000, Peabody has become increasingly active in issues regarding architecture and the environment and made these issues central to the way the firm approaches its work. In 2004, he became a LEED Accredited Professional, and in 2009 he became a Certified Passive House Consultant (CPHC®) – one of the first five architects in the country to achieve this designation.


richard pedranti

Richard Pedranti RA

Richard Pedranti earned his Bachelor of Science, Major in Architecture, from Pennsylvania State University in 1987 which included time abroad at the University of Florence in Italy. Throughout his early architectural education, Pedranti also undertook studies at Pratt University and Cornell University spending summers as a framing carpenter and drafting at regional architecture firms including Peter Forbes Associates in Boston widely respected for its residential modernism. To continue his formal education, Pedranti selected the Graduate School of Design at Harvard University because of its dedication to teaching the doctrines of modern architecture. There he studied under some of the world’s leading modern architects receiving a Masters of Architecture in 1990. Upon completing his Masters, Pedranti was recruited to New York by Rafael Vinoly Architects, one of the leading modern architects of our time. While with Vinoly, Pedranti was selected to lead a team of 30 employees that delivered an essential component of the Tokyo International Forum a $2.5 billion building. After completing the Tokyo Forum, Pedranti moved to WPG Design also in Manhattan to expand his practical experience in interior design. There he served as the project manager on the Bloomberg LP account, overseeing the construction and renovation of 5,000 square feet of office space including the Charlie Rose Production Studio. Richard Pedranti Architect was begun in the Meat Packing District in the Lower West side of Manhattan. Licensed in Pennsylvania, New York State and New Jersey and member of the American Institute of Architects, Pedranti specializes in energy efficient residential and small commercial projects in Northeastern Pennsylvania, New York City, and Philadelphia with a particular focus on Pike County projects. Richard became a Certified Passive House Consultant (CPHC®) in 2012. He is also a Certified Passive House Builder (CPHB), a Certified PHIUS+ Rater, and a RESNET certified HERS rater.

Dan Porzel

dan porzel

Cedar Street Builders

Dan Porzel is a PHIUS Certified Builder with 17 years of high performance building enclosure experience.  Dan and his company, Cedar Street Builders, have been specializing in high performance homes in the Indianapolis area and recently completed the first certified PHIUS+ home in Indiana.


shelly pottorf

Prairie View A&M University

Shelly is a registered architect, a LEED AP, and a Certified Passive House Consultant and Builder. Her work through the AIA Houston Committee on the Environment, Passive House Alliance, and the Houston Regional Resilience Collaborative have established her as a go to leader on sustainability and social justice efforts in Houston. As an architect and the principal of Architend, Shelly spearheaded the first project in Texas to seek Living Building Challenge Certification. She is a frequent presenter on sustainable design, including appearances at Gulf Coast Green, the Green Schools National Conference, Texas Society of Architects Conference, Total Energy USA, and the German American Energy Efficiency Conference. Shelly further extends her reach as an Adjunct Professor in the Prairie View A&M University School of Architecture, where she focuses on regenerative and public interest design. Piloting the PHIUS CPHC curriculum at the university level, Shelly has led Prairie View A&M teams to the Design Excellence Award and the Grand Award in the Department of Energy’s Race to Net Zero Competition in 2015 and 2016 respectively.


alison ray

Alpen HPP

Ali Ray has eight years of experience in consultative sales of efficiency-related building materials and design and construction services. She holds a cum laude Bachelor of Science in Environmental Studies from the University of Vermont, and is experienced in multiple CAD and computer programs supporting the design of sustainable buildings

Rogero Head Shot

mary rogero

RA, CPHC®, LEED AP, Associate Professor and the Interim Chair of the Department of Architecture and Interior Design at Miami University

For 15 years, Mary was a principal in the design firm of Rogero Buckman Architects. With her business partner, she also helped develop a construction company to construct the firm’s designs and a development company. The design firm was primarily focused in the area of housing, particularly loft development and the rehabilitation of older buildings. Mary is now an Assistant Professor in the Department of Architecture at Miami University. She teaches Passive and Low Energy Design seminars and Design Studio to freshman through graduate level. She is passionate about engaging students in the practice of Passive House and high performance design to prepare them as future leaders in sustainability. Mary continues to practice architecture and is the current president of the PH Alliance SouthWest Ohio chapter.

marc rosenbaum

Marc Rosenbaum, P.E.

Marc uses an integrated systems design approach to help people create buildings and communities which connect us to the natural world, and support both personal and planetary health. He brings this vision, experience and commitment to a collaborative design process, with the goal of profoundly understanding the interconnections between people, place, and systems that generate the best solution for each unique project. Design practiced at its highest level goes beyond efficiency and conservation to create places that regenerate and nurture the natural world and all of its inhabitants.


david salamon


David is motivated to design architecture of consequence that improves the lives of individuals and their communities. Prior to earning his Bachelor of Arts in Architecture at the University of New Mexico and a Master of Architecture with a Certificate in Ecological Architecture at the University of Pennsylvania, David designed and built off-grid and passive solar homes. With this background, David approaches architecture through the eyes of a designer, ecologist, craftsperson, and builder. David is a Certified Passive House Designer, the first elected President of the Greater Philadelphia Passive House Association, and Adjunct Assistant Professor at Temple University where he teaches energy modeling seminars. At Re:Vision, David provides architectural design and high-performance / Passive House consulting services.


stan salwocki

Pennsylvania Housing Finance Agency

Stan Salwocki is the Manager of Architecture & Engineering at the Pennsylvania Housing Finance Agency (PHFA), where he oversees the architectural, engineering, and environmental review staff. PHFA is the agency responsible for the allocation of Low Income Housing Tax Credits in Pennsylvania, which is the primary funding source for affordable housing in the state. Salwocki is responsible for updating the design, sustainability, and energy efficiency standards for the agency’s multifamily programs. This led to the inclusion of passive house standards in PHFA’s ranking criteria for its 2015 and 2016 applications. A registered architect, Salwocki brought over 20 years of architectural experience to PHFA when he was hired in 1999. His previous work included a wide variety of architectural disciplines, including the design of dozens of affordable housing developments.

Robert Sanders photo-001

rob sanders

Senior Finance Director, Clean Energy Group

With over twenty-five years of experience in community development and energy-related commercial finance, Rob Sanders has deep expertise in designing, implementing and evaluating financing programs, financial products and related services in the areas of clean energy and sustainable community development. With Clean Energy Group, he provides analysis and designs and promotes finance strategies to engage multifamily affordable housing developers, municipalities and other project developers in community resilient power. Rob negotiates funding agreements with project developers and technical service providers to assess the technical and financial feasibility of community resilient power projects. He writes and speaks extensively on clean energy and resilient power finance, especially in connection with low income communities and vulnerable populations. Rob was formerly the Managing Director of Energy Finance for Reinvestment Fund, a leading innovator in the financing of neighborhood and economic revitalization. In this capacity, he served as Fund Manager for the Sustainable Development Fund, a $32 million fund created by the Pennsylvania PUC to promote renewable energy and energy efficiency, as well as TRF Fund Manager for the Pennsylvania Green Energy Loan Fund and the Philadelphia metropolitan area EnergyWorks Loan Fund. As lead for all energy investing, he made loans, leases, equity investments and performance-based grant incentives. Rob holds an MCP from the University of California at Berkeley and a B.A. from Stanford University. *** Areas of Expertise: Clean Energy Finance, Sustainable Community Development, Project and Enterprise Finance, Institutional Investment Strategies in Clean Energy.

 John Semmelhack pic_opt

john semmelhack

Think Little

John is the owner of Think Little an energy efficiency and green building consulting firm based in Charlottesville, Virginia. John consulted on the first certified Passive House residence in Virginia and is currently consulting on three other Passive House projects in central Virginia. John is a Certified Passive House Consultant, a member of the Passive House Institute U.S. (PHIUS) Technical Committee, and is a PHIUS Trainer for the Certified Passive House Consultant and PHIUS+ Rater training programs. He sits on the boards of the Passive House Alliance U.S. (PHAUS) and the Passive House Alliance U.S. – Capital Chapter. John is also a certified Home Energy Rating System (HERS) rater, a Technical Advisor to builders in the EarthCraft House Virginia green building program, and a BPI-certified Building Analyst. He is a graduate of the Leeds School of Business (no, not that “LEED”) at the University of Colorado at Boulder.


keith simon

Building Exterior Solutions, INC (BES)

Keith Simon is a Senior Architect with Building Exterior Solutions, INC (BES) in Austin, TX. Previously, he worked for Wiss, Janney, Elstner Associates, Inc. and owned the Ecotone Design Lab, an architecture and sustainable design consulting firm. He is a Registered Architect, Certified Passive House Consultant (CPHC® #1600), and Legacy LEED AP. Mr. Simon was the founder of the Austin Building Enclosure Council (BEC: Austin) and currently serves as a board member for both BEC: Austin as well as the Passive House Austin Chapter. Mr. Simon is also adjunct faculty at the University of Texas School of Architecture (UTSoA) in Austin. In 2012, Mr. Simon was awarded the 2012 Emerging Professional Honor Award by the Austin AIA: presented to an AIA member for professional achievement in leadership during the early years of participation in AIA Austin, a role model in the organization that goes beyond the call of duty in service to the profession; influences improvement in the organization at the local level; encourages participation among fellow members and nonmembers and exemplifies qualities of leadership and of professional practice.


tessa smith

Artisans Group

Tessa Smith, CPHC®, LEED AP, AIA, is a Principal and Lead Architect at The Artisans Group, a Pacific Northwest based Passive House Design/Build firm. Her award-winning work is seen throughout South Puget Sound and explores issues of human scale, inter connectivity to site, and the beauty of restraint. Tessa regularly presents and educates on Passive House, and is a founding member of Passive House Northwest. The Artisans Group has designed and built over 15 Passive Houses, with many more in development. Tessa competes in roller derby, attends Emerald City Comicon religiously, and is learning to play the fiddle.


travis smith

T and T Mountain Builders

Travis Smith is the founder/owner of T and T Mountain Builders. He’s a Certified Passive House Builder, and has successfully certified a passive house in Park City. He’s been in the building trades for 20 years, and started constructing highly efficient homes in 2007 under some of the early green build programs. He has continued to improve his methods and techniques on every project that he’s built.


galen staengl

Staengl Engineering, PassivScience

Galen Staengl, P.E., LEED® AP BD + C, CPHC® has 20 years of experience designing cutting-edge energy- efficient mechanical systems for green building projects and industrial facilities. Throughout his career Galen has worked to bring energy-efficient and sustainable principles into his designs for award-winning schools, institutional buildings, multi-family residential projects, and office buildings. As President of Staengl Engineering, Galen has provided design and energy analysis for many buildings that have achieved LEED Platinum and Gold levels, Passive House certification, Net Zero energy, Net Positive energy, and Living Building Challenge. As a leader in low-energy building system design, Galen regularly presents at national and regional green building conferences. In addition to his design experience, Galen is an accomplished energy modeler using IES VE, DesignBuilder, DOE2, VisualDOE, eQuest and EnergyPro software. This modeling experience includes LEED compliance documentation as well as analysis of specific strategies for energy savings and life cycle costs. He has also provided energy consulting and commissioning services for a wide variety of systems and building types.

mike steffen

Walsh Construction Co.

Mike Steffen, AIA, LEED AP is Vice President and General Manager of Walsh Construction Co. Mike is an architect, builder and educator with over thirty years of experience in the design and construction of the built environment. WALSH is a Pacific Northwest general contractor specializing in all types of multi-unit housing, educational and commercial facilities – with a commitment to being a leader in the construction of energy-efficient, healthy and durable buildings Over the past decade Mike has taught at the University of Oregon School of Architecture and Allied Arts and has been a frequent speaker to design and construction industry groups regarding the subject of high performance, low energy buildings.

Sturtz Photo

ben sturtz


Ben Sturtz is currently the Housing Development Project Manager at REACH Community Development. He manages construction and financing of REACH’s rental housing developments in Washington County in Oregon and Clark County in Washington State totaling 266 units and $68 million in investment. Prior to joining REACH in January 2015, Ben was the Housing Services Specialist at the Washington County Office of Development since April 2005. He managed the HOME Investment Partnerships Program at Washington County funding affordable housing countywide, as well as the County’s first-time homebuyer program and Neighborhood Stabilization Program. In addition to this work at the County, Ben also facilitated the Housing and Supportive Services Network of Washington County and the County’s federal Continuum of Care grant. Ben has a Master’s in Urban and Regional Planning and Graduate Certificate in Real Estate Development from Portland State University, as well as a Bachelor’s of Arts Degree with a Double Major in Political Science and Spanish from the University of Illinois at Urbana-Champaign. Ben lives with his wife and two young children in Northeast Portland.


skylar swinford

Energy Systems Consultants

Skylar Swinford is the Principal of Energy Systems Consultants, an Idaho based building energy and enclosure consulting firm. Skylar graduated with a degree in Environmental Science from Willamette University in 2007 and has worked in the high performance building industry since. Skylar is a Certified Passive House Consultant (CPHC®), PHIUS+ Rater, and a BPI-certified Building Analyst and Envelope Professional, and has consulted on hundreds of residential and commercial building projects in the Northwest and across North America. This ranges from his work on many Net-Zero Energy and Certified Passive House projects, to the forensic evaluation of failed buildings.


jesse thompson

Kaplan Thompson

Jesse is an award winning architect from Portland, Maine who has become a national leader in building science and green design.

Jesse grew up in the Northeast Kingdom of Vermont, and lives in the Deering Center neighborhood of Portland with his family. He received his B.Arch from the University of Oregon in 1996. He is a Maine Licensed Architect (NCARB), a member of the AIA (The American Institute of Architects), a LEED (Leadership in Energy and Environmental Design) Accredited Professional and the first architect in northern New England to become a Certified Passive House Consultant. He is a registered Architect in Maine, Virginia & Maryland. He is a founding member of the Maine Passive House Alliance, which promotes education about this high quality building movement.

Paul Thompson

paul thompson

IEI Architects

Paul joined IEI Architects as a principal in 2013. IEI Group is an award-winning design firm, ranking in Interior Design Magazine’s top 200 national firms. IEI provides architecture, interior design, facilities and project management to corporate, educational and residential clients. Previously, Paul co-founded BluPath, An award winning architecture firm with Laura Blau. While at MGA Partners, he was project manager for the West Chester University School of Music (LEED Silver), and project architect for the Annenberg School for Communications addition at the University of Pennsylvania. He worked for A M Stern, William Kite and Lerner Ladd Architects. Paul has taught at Philadelphia University and Temple University and presented at international and regional conferences. As vice president of the Meredith Home and School Association, he championed the Meredith Green project. Paul is a founding member of the Greater Philadelphia Passive House Association. He has a BS in mechanical engineering and a MArch from University of Virginia.

Peter trost

peter troast

Founder and CEO, Energy Circle

Peter is recognized as one of the country’s foremost authorities on marketing for home performance, HVAC and other efficiency related contracting companies. He and his team work with over 350 companies in 49 states grow their business through services like website design and development, search engine optimization, lead generation, and strategic content production. He is a popular and high ranking speaker about marketing for contractors at ACI, RESNET, ACCA, BPI, and EGIA conferences and events. For 2015, he received the Tony Woods Award for excellence in advancing the home performance industry.

 Adam Ugliuzza

adam ugliuzza


As an employee with Intertek, I have concentrated on whole building air testing / infrared thermography, building enclosure consulting / commissioning, working on projects throughout United States evaluating and designing residential, commercial and industrial façade assemblies in various climate zones including roofing, cladding, fenestration and below grade waterproofing. I have been integral in the advancement of multiple disciplines within the Intertek –Building Sciences group that includes building enclosure consulting / commissioning and whole building air testing / infrared thermography discipline areas. As a leader in Intertek’s Building Enclosure Air Tightness Testing discipline group I have been involved with building enclosure air tightness testing and infrared scanning on nearly 100 buildings.

Ellen Vaughan - Favorite

ellen vaughan

Environmental and Energy Study Institute

Ellen Vaughan leads Environmental and Energy Study Institute (EESI)’s High Performance Green Building Initiative, which she originally launched. She develops and promotes policies that maximize the use of energy efficiency, renewable energy, and sustainable materials in buildings. Vaughan has more than 25 years of experience on building-related policy issues, having previously worked for Steven Winter Associates, a research, design, and consulting firm for high-performance buildings, for the Air Conditioning Contractors of America, and for the National Society of Professional Engineers. She has participated on National Academy panels, testified before the U.S. Congress, and authored or co-authored a number of significant articles on buildings and energy, including “Beyond Green: High Performance Buildings,” and “Advancing a Blueprint for High-Performance Homes.”


mark walter

Professor at the University of California in Irvine

Mark Walter graduated with a BSc in mechanical engineering from Brown University in 1990 and a PhD in applied mechanics from the California Institute of Technology in 1996. He was a Fulbright Postdoctoral Fellow at the University of Karlsruhe prior to becoming an assistant and then associate professor of mechanical engineering at The Ohio State University (OSU). Mark was the lead faculty advisor for the 2009 and 2011 OSU solar decathlon teams. He has also worked with students to develop a hybrid air-water conditioning system with separate latent heat control and a wireless mesh sensor network for system identification and improved HVAC control. During the 2014-15 academic year Mark was a guest scientist at the Fraunhofer Institute for Building Physics where he undertook several WUFI projects. Mark is currently a Teaching Professor at the University of California in Irvine.

 cindy wasser

cindy wasser

ICF International

Cindy Wasser is a Senior Associate with ICF International. In this role, she supports the implementation of EPA’s Indoor airPLUS and ENERGY STAR labeling programs for new homes and multifamily buildings. Previously, Cindy was Manager of Green Building Programs at Home Innovation Research Labs and managed all day-to-day aspects of the NGBS Green Certification program. Her earlier work experiences include sustainability technical assistance and research at the National Association of Counties (NACo) and community engagement and long-range planning within the City of Montpelier’s (VT) Planning Department. Cindy graduated magna cum laude from Rutgers University with a B.S. in U.S. Environmental Policy and certificate in Environmental Planning. She is currently seeking an MBA in Sustainability at Bard College.

Weiss Construction

brandon weiss

Evolutionary Home Builders

Brandon is president and founder of Evolutionary Home Builders (EHB), Chicago’s premier sustainable homebuilder. Weiss applies a scientific approach to building homes, employing quality control each step of the way to ensure that all EHB homes function at the highest level of building science, health, and efficiency. Weiss is a third generation builder, and his performance-focused methodology draws inspiration from his time in Europe playing professional basketball, where he was drawn to a more sustainable way of life and construction. He looked to bring these ideals to homebuilding in the United States when he started his business in 2005. Weiss has been recognized by several awards and distinctions. Brandon is a Graduate Master Builder, PHIUS Certified Builder, Master Certified Green Professional, LEED AP, BPI Building Analyst & Envelope Professional, Certified Graduate Remodeler, Certified Aging In Place Specialist, built the first Certified Passive House in Chicagoland in 2012, and the first two DOE Challenge Homes in Illinois (17th nationally).

lisa white

PHIUS+ Certification Manager

Lisa White has been with Passive House Institute US (PHIUS) since 2012 and currently serves as the project Certification Manager. She is also an instructor for Certified Passive House Consultant (CPHC®) and WUFI Passive software trainings. White holds a degree in Environmental Sustainability with a minor in Architecture from the University of Illinois at Urbana-Champaign, and she is currently pursuing her Master’s in Energy Engineering at the University of Illinois at Chicago.

In consultation with PHIUS Senior Scientist Graham Wright, White works on certification program development, reviews project designs and energy models to evaluate their qualification for PHIUS+ Certification, and provides feedback to project submission teams. She also provides consulting services on static and dynamic energy modeling in WUFI Passive, THERM modeling, and project planning specific to passive building principles. White has presented at numerous conferences and events, including the PHIUS Annual North American Passive House Conferences, the Affordable Comfort Institute national conference, and Facades+.


dan whitmore

PHIUS Trainer, PHIUS Board Member

Dan Whitmore has worked in the construction industry since 1987 as a carpenter, general contractor, builder, and consultant with additional stints as a designer and FEMA Inspector. His introduction to high-performance building came at an early and impressionable age when, in 1977, his family built an award-winning Solar Home in Oklahoma, where he grew up. As designer, builder and Certified Passive House Consultant in 2010 he completed one of the first Passive Houses in Washington State. Since this time he has consulted on and/or built an additional twenty Passive House projects. As a part of the Hammer & Hand team he concentrates on project development and implementation in the Seattle market in addition to energy and building consulting throughout the region. He is also an Instructor for the Passive House Institute US, co-developer of the PHIUS Builders’ Training program, Board Member of the Passive House Alliance US and a founding Board Member of Passive House Northwest.

david wilderman

Senior Production Specialist at U.S. Department of Housing and Urban Development


julie willem

A2M be

Julie Willem is a partner architect at A2M be in Belgium, where she serves as a passive house trainer and leads the communication/ publishing department. Willem contributes to the successful dissemination of passive house throughout Belgium and Europe, and recently in the US as well. She created the be.passive quarterly magazine, which she published for 5 years, and authored a book entitled Passive Architecture.

Version 3

graham s wright phd

PHIUS Senior Scientist, Chair of the PHIUS Technical Committee

Graham S. Wright leads PHIUS’ research and development efforts, including ongoing work to adapt the existing passive house standard to North American climate zones. He also established and leads the PHIUS Certified Data for Windows program, which evaluates windows for use in passive building applications for specific climate zones. Wright also helped launch the PHIUS+ Certification program, and still provides input to that program. Wright also serves as the Chair of the PHIUS Technical Committee, a consensus based panel of passive building experts who review technical standards and practices and publish findings. He earned a Ph.D. in electrical engineering from the University of Illinois at Urbana-Champaign with thesis work related to ink-jet printing. He worked 10 years for Eastman Kodak on development of toner-based printing technology. In 2007, he joined Americorps VISTA and moved to Minnesota, where he helped the Rural Renewable Energy Alliance develop a durable and efficient solar air heat panel. In 2008 he served as a permaculturalist for the Hunt Utilities Group and discovered passive house.


jason wrobel

Building Exterior Solutions

Jason Wrobel is an Associate III with Building Exterior Solutions, INC (BES) in Austin, TX. He is an Engineer in Training (EIT) in the State of Texas, a certified Construction Documents Technologist (CDT), and a LEED Green Associate. Mr. Wrobel graduated from the University of Texas at Austin’s Cockrell School of Engineering with a Bachelor of Science in Mechanical Engineering (BSME) degree in 2012. Mr. Wrobel has been working with BES as a building envelope consultant for the past three years.


hayes zirnhelt

Rocky Mountain Institute (RMI)

Hayes Zirnhelt, M.A.Sc., Senior Associate in Rocky Mountain Institute (RMI)’s Building Practice, applies energy modeling and design expertise to achieve deeper energy savings in both new and existing buildings. Hayes studied Integrated Engineering at the University of British Columbia with a focus on energy and environmental engineering, and then completed a Masters in Building Science at Ryerson University focusing on passive solar housing and energy simulation. Prior to joining RMI, he ran his own building energy analysis and consulting practice working on super efficient buildings, and also built his own passive solar, off-grid home. His recent projects at RMI include developing a cost-effective pathway to net zero for a mixed-use development in Pittsburgh, and a net zero energy feasibility study for McDonald’s. He is currently working on RMI’s REALIZE project developing a business model for mass-scale residential deep energy retrofits, and working to accelerate efficient new construction in China.