All Climates. All Building Types. Passive House.

September 22 - 23
Portland, Maine

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Platinum Sponsor 


Final speaker selection will begin in June and will be listed as they are confirmed.

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Lizzie PicLizzie Adams, Beyond Efficiency, California. Lizzie is a Sustainability Engineer with Beyond Efficiency, a woman-owned company that specializes in Passive House consulting. Beyond Efficiency focuses on providing rigorous technical advice around energy, water and health issues for buildings. Lizzie's personal focus is on HVAC and commissioning, trying to keep systems simple and maintainable as well as efficient. To augment her previous design experience, Lizzie recently completed an intensive, year-long retrocommissioning class.  Before joining Beyond Efficiency, Lizzie was a sustainability consultant at Umow Lai, a leading multi-disciplinary firm in Australia. Lizzie holds a BS in Chemical Engineer, which she applied to applied energy research. Lizzie is currently Treasurer of Passive House California.



Naomi Beal picNaomi Beal, passivhausMAINE, Maine. Naomi is the Director and founding member of passivhausMAINE.  She has been a long time supporter of passive house principles, initially as a photographer of high performance buildings and most recently guiding the design of Friends School of Portland's new campus.  Naomi is committed to developing strong support for passive house standards in Maine by strengthening in-state connections and reinforcing bonds with national and international organizations.

BergstromHelenPhotoHelen Bergstrom, Brown University. Helen Bergstrom is a senior at Brown University, where she is studying chemical and biochemical engineering. Helen is the project engineer for the Techstyle Haus project, and was responsible for creating the WUFI-Passive and WUFI plus models of the project as well as for designing the HVAC systems of the house. Helen was also responsible for the comfort analysis of the architectural design. The project won 3rd place in the European Solar Decathlon for comfort conditions. Helen’s current research focuses on catalytic bio-fuel upgrading.

Keren Bian picKeren Bian, Sayyas Windows, China. Mr. Bian is the second generation of the founder and the current president of Sayyas Windows Stock Co., Ltd.  Sayyas was the first Chinese manufacturer to receive Passive House Institute certification for its components. Sayyas now has two products with PH component certification and has initiated an ambitious plan to build the largest Passive House in the world, a factory, to produce Passive House windows.  Mr. Bian graduated from Boston University in May 2013.

imageKevin Brennan, Association of Energy Affordability. New York. Kevin Brennan is a trainer for the Association for Energy Affordability. He is a certified passive house tradesperson and holds a variety of certifications from BPI and ABAA. Kevin teaches AEA’s hands-on courses for retrofit installers and passive house tradespersons leading to BPI, ABAA and PHI certifications. He also performs construction management of AEA crews working on passive house projects.


Laura Briggs PicLaura Briggs, Rhode Island School of Design, Rhode Island. Laura is head of the Department of Architecture at the Rhode Island School of Design. 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.  Briggs is a partner in BriggsKnowles Studio, a practice recognized for its use of light, color and the integration of energy efficient and renewable energy technology. Her work on super efficient buildings, adaptable photovoltaic systems and concentrating solar has been supported by the US Department of Energy, Arnold W. Brunner Foundation, Deborah J. Norden Fund and through a fellowship from the MacDowell Colony. She holds a Master’s Degree from Columbia University’s Advanced Architectural Design Program and a Bachelor of Architecture from the Rhode Island School of Design.



ccorson 2Chris Corson, EcoCor, Maine. Christian Corson is the owner and Technical Director of EcoCor LLC and a founding member of PassivHaus Maine.  He is a Builder, Designer, Building Scientist, and a student of life.  His concern for the state of the energy balance of the planet, his love of designing and building well performing buildings, coupled with a fascination with building physics, is a natural fit with Passive House. Chris has designed several single family PH’s to date, in multiple climates. Ecocor is currently under construction of its ninth PH project. Ecocor has also performed Deep Energy Retrofits of three homes in Maine, two of them to Passive House standards. Chris is  dedicated to the evolution of building best practices and building methodologies in the United States so that the construction side of things is more aligned with contemporary materials and practices that embrace concepts with low embodied energy.



JokeDockxJoke (Yoka) Dockx, Brussels Institute for Management of the Environment, Belgium. Joke Dockx  graduated as a Civil Engineer in 2000.  In 2002, after completing an MBA, she started working at the Brussels Administration for the Environment and Energy (“Brussels Environment”).  Her initial responsibility was to implement the European EPB-Directive (Energy Performance of Buildings) for the  Brussels Region, as well as to promote the rational use of energy throughout the Region.  She was promoted to Head of Department in 2007.  Since November 2011, she has been working as the Head of the Sub-Division “Promotion of Sustainable Buildings,” supervising a group of forty-five people.



Foto WittaEbelWitta Ebel, Passive House Institute, Germany. Dr. Ebel comes from a background of physics and mathematics. She has been working on questions of energy politics and energy efficiency since 1980 and was deeply involved with the development and ongoing evaluation of the first Passive House (Darmstadt, Germany), where she has lived since its erection in 1991. Ebel was one of the founding scientific staff members of the Passive House Institute, starting in 1996. She continues to be involved in multiple national and international projects on energy efficiency. Her main areas of concentration include the study of low energy and Passive House buildings, the development of design tools (PHPP), energy efficiency of building stock, energy scenarios, and economic assessment.

TDE headshot grayBackground colorTim Delhey Eian, TE Studio, Minnesota. Tim Delhey Eian was born and raised in Germany. He is a master carpenter and a graduate of the architecture school at the Technical University of Kaiserslautern (Germany), where he received an engineer’s title in architecture. Tim moved to Minneapolis in 2001 where he works as a professional building designer and architectural engineer. He is a certified Passive House designer and consultant. Tim is a founding member of the Passive House Alliance United States, a national trade organization for Passive House, and its local Minneapolis/ Saint Paul chapter.

Ross ElliottRoss Elliot, Homesol Building Solutions, Ontario. Ross is an energy designer, Certified Passive House Consultant and LEED-AP (BD&C) with 30 years of experience in sustainable construction. He founded Homesol Building Solutions in 1999 to inspire owners, designers, builders, developers and policymakers to create the most energy efficient homes possible. A former R-2000 builder and licensed carpenter, Ross is a founding member and current President of Passive Buildings Canada, a founding member of the Global Passive Buildings Council and a director of the Ontario Natural Building Coalition. He has provided research and training for organizations including Canada Mortgage and Housing Corporation, Ontario First Nations Technical Services and Natural Resources Canada.

Mark Elton PicMark Elton, Sustainable BY Design. England & Wales. Mark joined Sustainable By Design LLP in May 2013, bringing with him over 18 years of experience in low energy architecture, working on new build and refurbishment projects across the country. He has been responsible for a number of exemplar retrofit schemes, developing particular expertise in large-scale and hi-rise social housing refurbishment and including projects to the EnerPHit standard. He was an active member of the Royal Institute of British Architect’s Sustainable Futures committee for 6 years and is a Life Fellow of the UK’s Centre of Refurbishment Excellence. He is an accredited European Passivhaus Designer and recently served on the jury for the 2014 International Passivhaus Awards.



Foto WolfgangFeistDr. Wolfgang Feist, Passive House Institute, Germany. A physicist by training, Wolfgang Feist began work on energy efficiency, energy politics, low energy buildings and building simulation in the 1970s. He implemented Germany’s first post-graduate university programme on energy technology in 1981, and in 1988 he started his research on Passive Houses, with the realisation of the first pilot building in Darmstadt/Germany as early as 1990/91. The building, which is still in use as a comfortable and high-performance home of four families, was thoroughly documented and monitored, and its experiences served as the basis for the further development of the Passive House standard. With the founding of the Passive House Institute in 1996, he created an independent research institution that aids architects, engineers and manufacturers in the development of highly efficient buildings and components in almost all parts of the world. Feist received the German Environmental Award in 2001 and the Göteborg International Environment Prize in 2003. In 2013, he was awarded the Honorary Fellowship by the Royal Institute of British Architects (RIBA).  In addition to scientific direction of the Passive House Institute, Dr. Feist serves as a professor of energy efficient building and building physics at the University of Innsbruck  (Austria) where he has worked with the faculty of Civil Engineering since 2008.

Matt Fine PicMatthew Fine, ZA+D, LLC, Maryland. Matt is a CPHC, LEED AP, andSenior Project Manager with ZA+D, LLC., a general practice architecture firm in the Washington, DC Metro region, and Director of ZA+Dpassiv, a division of the firm focusing on high-performance building design and consulting. For over 16 years, Matt has led project teams in the full spectrum of architectural design and construction projects.  More specifically, for the past 10 years, he has focused on multifamily affordable housing, recognizing the critical need for thoughtful, simple and lasting, yet progressive dwellings serving sectors of the DC Metro population with a greater need thereof. Matt brings a wide perspective to optimizing and detailing enclosures for long-term, risk-minimized buildings in the challenging 4A Climate Zone. Matt holds a Bachelor of Arts in Architecture degree from UNC-Charlotte.

Mike Fowler portrait Img15180-1Mike Fowler, Puget Sound Energy, Washington State. Mike Fowler manages the Residential New Construction Energy Efficiency Financial Incentive Program at
Puget Sound Energy. He's an Architect with +20 years experience that includes two net-zero energy design projects, five LEED projects, and past service on the Washington State Building Code Council Energy Code Technical Advisory Group. In 2012, Mike authored an Outcome-based Energy Budget code proposal, a roadmap to reduce actual energy use 70% by 2030.



GephartJeff Gephart, Vermontwise Energy Services, Vermont. Jeffrey Gephart is president of Vermontwise Energy Services, Inc. an energy services company in Rochester, Vermont, he founded in 1997.  He has years of experience in residential new construction energy-efficiency program design and implementation. Jeff works with architects and builders building ENERGY STAR® Homes, LEED for Homes, National Green Building Standard, and Passive House projects. He works with appraisers, mortgage lenders, realtors, and the MLS seeking real estate market transformation.

Jordan Goldman PicJordan Goldman, Zero Energy Design, New York. Jordan Goldman is a specialist in energy modeling, mechanical engineering, and manages the HVAC design practice for ZeroEnergy Design. He is fluent in building envelope strategies and energy efficient construction systems, building science design principles, as well as mechanical system design, specification, and sizing for enhanced energy performance. Additionally, he is experienced in sizing and specifying renewable energy systems, such as photovoltaics and solar hot water. Jordan has been recognized by the Environmental Protection Agency (EPA) for his achievement in systems design for green buildings. He has served as a judge for the NAHB Research Center's Energy Value Housing Awards. He is a Certified Passive House Consultant, a LEED Accredited Professional, a Verifier for NAHB's National Green Building Standard, and a HERS Rater. Jordan studied Environmental Engineering at Cornell University, where he received both a Bachelor of Science and Master of Engineering.

Nick Grant PicNick Grant, Elemental Solutions, United Kingdom. Nick Grant is a freelance building consultant with a lifelong passion for doing more with less. He has no professional qualifications having dropped out of two universities in the 1980s to follow his interests. Whilst thankful for a basic grounding in engineering, he is mostly self-taught. His interest in closing the performance gap led him to his first Passive House conference in 2007. Nick is a practical engineer, tinkerer and self-builder with a keen interest in theory as a useful tool. He is known for questioning everything, including the need to question everything.  He is on the Board of the Passivhaus Trust as Technical Director.

Ling Guo picLing Guo, Passive House Institute, China.  Ling Guo is currently the China Observer and Coordinator for the Passive House Institute (PHI). She is the first person sent by PHI to the Chinese market to coordinate all interested parties to promote Passive House in China. Also, Ms. Guo is actively involved in China through MOHURD, the Chinese government branch in charge of Housing and Urban-Rural Development, and is currently helping initiate the first domestic China Passive House Alliance.  Ms. Guo holds a bachelor degree of Telecommunication Engineering from Beijing Science and Technology University in China and a MBA degree with dual majors in Finance Investment and Public Accounting Management from Baruch College of CUNY in the United States.



DieterHerz PicDieter Herz, Herz & Lang, Germany. Dieter started in 1998 with his first Passive House, a semi detached wooden building in the south of Bavaria. The private investors make up a substantial proportion of the Passive House market in Germany and Austria. The increase in heated floor space of large residential and especially non residential buildings shows the real success of the Passive House concept. Herz & Lang with its 15 employees has designed and consulted alongside a number of different teams in the construction of buildings with over 400 million euro building costs, installing their system of integrated design for energy efficient buildings in certified Passive House standard. In 2014 Herz & Lang won the Passive House Award for “Office and special use building” with the first Passive House museum worldwide and were also presented with the European award for best integrated planning for the same project.

John Ho picJohn Ho, Landsea Holdings Corporation, China. John Ho is Managing Director for Landsea Group’s US Real Estate Division. He is responsible for managing all US operations and is focused on acquisitions, development and sales of residential properties, including value-added services in the United States. Established in 2001, Landsea Group is one of China’s top 50 real estate companies and the largest green property developer in China. Landsea finished its Bruch Passive House Hotel project in Changxing, Zhejiang Province this spring that is the first Passive House built in the South of Yangtze River in China and it successfully resolved the dehumidifying issues in such a typical hot-summer-and-cold-winter climate zone.  Before joining Landsea, John worked at leading global real estate investment management and consulting firms, Colliers International and Jones Lang LaSalle. John holds a Bachelor of Science degree in Business Administration from the University of Southern California, Los Angeles.

garth hood picGarth Hood, Thoughful Dwellings, New Brunswick. Garth has always loved to find simple and elegant ways to solve seemingly complex problems.  He has designed some of the most energy efficient homes and homes-to-be in Atlantic Canada.  He did the design and PHPP modelling for the first (and so far only) Canadian house, the Naugler House, to be heated solely through the ventilation system.  He began his design career as a theatrical lighting designer.  He also studied permaculture and ecological gardening.  Designing and building Passive Houses provides Garth the opportunity to express both his creative and technical interests.  He tries to find the delicate balance between swinging the hammer and hammering the keyboard.  The canoe is his favorite mode of transportation.  As a critical thinker, Garth enjoys  challenging climate change deniers and educating fossil fueled New Brunswick policy makers.  He lives in an old and not yet Passive House in downtown Fredericton, New Brunswick.

Katy picKaty Hollbacher, Beyond Efficiency, California. Katy is a licensed Civil Engineer and has more than 15 years experience in the A/E/C and green building industries. She is Principal of Beyond Efficiency, a high-performance building envelope and HVAC systems consulting firm that helps clients literally “push the envelope” by applying technical expertise and analyses to optimize building performance. Katy was the rater and energy consultant for the Carmel Passive House, a LEED Platinum home that won the 2013 Fine Homebuilding Best New Home award, as well as Merritt Crossing, a LEED Platinum multifamily affordable housing project that also earned California's first ENERGY STAR Highrise certification. Katy was a founding board member of the non-profit Passive House California. At home in the field as well as the office, Katy has pounded nails, hung drywall, and pulled wires on various construction projects.

Bill HulstrunkBill Hulstrunk, National Fiber/GreenFiber, Vermont. Bill is the Technical Manager for National Fiber/GreenFiber.  After earning his MA degree, he has spent the past 22 years in the energy conservation field working with weatherization programs, energy service companies, electric utilities, and in the private sector. He teaches the Super Insulation for Net Zero Buildings at the Yestermorrow and has presented nationally on the topics of: building diagnostics, insulation performance and creating high performance building envelopes.



Graham Irwin PicGraham Irwin, Essential Habitat, California. Graham Irwin is a principal of Essential Habitat, a Northern California based design and consulting firm focused on healthy, high performance, sustainable buildings built to the Passive House standard. Graham was one of the first people in the US trained in Passive House techniques and studied at the Passivhaus Institut in Germany as a project certifier. His firm has worked on numerous single-family, multi-family and commercial Passive House projects throughout California and the US.

malcolm isaacs headshotMalcolm Isaacs, Canadian Passive House Institute, Ontario. Malcolm is a Passive House pioneer in Canada - in 2005 he built the first house in Quebec to Passive House specifications (in which he lives). He’s worked for over 20 years as a professional engineer, builder, designer, estimator and writer, and he can see no good reason why the Passive House Standard shouldn’t be adopted right now across the US and Canada. Mr Isaacs is one of the most experienced Passive House educators in North America, having taught the international Certified Passive House Designer course across Canada and the US since 2010, and he's passionate about demonstrating the affordability and achievability of this unique building standard. He's currently developing low-cost prefabricated Passive House residential designs for some of the colder parts of the continent.



kando-paul-head-shotPaul Kando, Midcoast Green Collaborative, Maine. A Hungarian born chemical engineer, Paul turned to energy research in the 1970s. A member of the design team for solar panel installation on President Carter’s White House, he later managed the solar energy program for the US Dept of Energy.  In 2007 Paul was a founder of Midcoast Green Collaborative, a citizen initiative dedicated to the premise that addressing global warming represents an economic opportunity. Paul’s current activities include building research, consulting, teaching, conducting energy audits and a columnist on energy and sustainability issues for several Maine news publications.

PJK headshot smallPhil Kaplan, Kaplan Thompson Architects, Maine. Founded in 2004, Phil Kaplan and his firm, Kaplan Thompson Architects, have emerged rapidly. The firm’s motto, “Beautiful Sustainable Attainable”, reinforces their commitment to creating vibrant, healthy and durable buildings for all.
His firm’s work has received numerous accolades, both locally and nationally. His projects have been published in books and magazines, including The New York Times, Washington Post, USA Today, and NPR and shown on HGTV and France 24. With a design + building science bent, Phil’s ‘edutainment’ podcast, Green Architects’ Lounge (along with fellow Maine Architect Chris Briley), is a topical blog on the popular website, Green Building Advisor. He currently serves on the Board of NESEA (the Northeast Sustainable Energy Association).

WQ7P0110adretouchREDO8x10Sheri Koones, Prefabulous World, Connecticut. Sheri Koones’ latest book is Prefabulous World: Energy-Efficient and Sustainable Homes Around the Globe. She is also the author of Prefabulous + Almost Off the Grid, Prefabulous + Sustainable, Prefabulous, House About It, Modular Mansions, and From Sand Castles to Dream Houses. She won the prestigious Robert Bruss Real Estate Book Award from NAREE in 2008, 2011, and 2013. Sheri is also a columnist, freelance writer and speaker.

J. KrieghJulie Kriegh, Kriegh Architecture Studios, Washington State. Founded in 2000, Kriegh Architecture Studios focuses on high performance residential buildings and neighborhoods. Julie Kriegh, AIA, LEED AP, and international CPHC advocates strategies that are Aggressively Passive, using high performance building, sustainable site, and community design modeling to achieve low-energy demand and low-impact site design community wide. She holds degrees from Duke
University and University of Washington (Master of Architecture) and is currently pursuing a PhD researching occupant behavior.

jesper kruse picJesper Kruse, Maine Passive House, Maine. Jesper is a Danish native who now lives in the mountains of Western Maine.  He is a builder and Certified Passive House consultant, and has built and designed several Passive House projects in Maine.  Jesper enjoys both the design and building phases of projects and is always open to trying new things.  When not building or designing, he enjoys skiing and getting lost in the woods.



Dylan Lamar picDylan Lamar, Green Hammer, Oregon. Dylan holds degrees in civil/structural engineering and architecture, and has worked with building-energy research labs at the University of Illinois and University of Oregon.  Dylan is equal parts architect, building scientist, and author.  He is among the most experienced Passivhaus consultants in the country, having designed and consulted on many of the “firsts” among Passive House buildings in the US including the first affordable, single-family Passive House (e-co lab, 2004), as well as one of the first Passive House office buildings in the country (CAPACES Leadership Institute, 2010) and affordable multifamily Passive Housing (Orchards at Orenco, 2012). In 2009 he translated the Passive House energy modeling software (PHPP) from metric to US customary units enabling widespread use of the tool by US practitioners.  In 2010 he published the manifesto, Urbanize & Insulate: The Development of a Fossil-Fuel Exit Strategy, which bridges the disciplines of planning and architecture.

Gunter Lang picGünter Lang, Lang Consulting, Austria. Günter Lang founded LANG consulting in 2001.  LANG consulting has conducted intensive research and consulting work, including theoretical research and pioneering demonstration projects, becoming a renowned expert in the field of Passive Houses.  Working in close cooperation with the Passive House Institute, Günter has made a major contribution in networking passive house stakeholders worldwide and familiarizing the general public with the Passive House standard.


Lucie L picLucie Langlois, Alias Architecture, Quebec. Lucie Langlois received her degree in architecture from University of Montreal in 1999.  Lucie is interested in bioclimatic approach since the beginning of her studies. She received the following academic awards: Habitat 67 (1997), Alcan-Arcop Award (1999).  She has worked in several architectural firms where she gained experience and expertise. Her determination to work for sustainable development led her to found her own architectural firm in 2008. She is LEED AP and Certified Passive House Designer. She is president of Maison passive Québec, a new non-profit organisation, dedicated to promote the Passive House standard in Quebec.

Morgan LawMorgan Law, Kaplan Thompson Architects, Maine. Morgan Law received his Master's of Architecture degree from the University of Oregon in 2010 where he was the recipient of the Belluschi Fellowship Teaching Position and the Pennell Scholarship. As an undergraduate, Morgan studied abroad in East Africa where he became acutely aware of the challenges of the built environment. He became a certified Passive House Consultant in 2012. He is a LEED accredited professional and is currently working towards becoming a registered architect. Outside of the office he enjoys building furniture, making art, and outdoor adventures. He currently lives in Golden, Colorado.



Stephen MagneronStephen Magneron, Homesol Building Solutions, Ontario. Stephen is a Certified Passive House Consultant with a passion for sustainable construction and deep energy retrofits.  An Advanced Housing graduate, LEED for Homes Green Rater and Certified Energy Evaluator, he worked as a carpenter for an award-winning green builder in Ottawa before joining Homesol in 2010. He has delivered research for Canada Mortgage and Housing Corporation comparing Passive House with their Equilibrium Net-Zero and SuperEE homes programs, has extensive experience with PHPP modeling and advanced building specifications and assemblies, and is currently the lead energy design consultant for several cutting -edge Passive House and Zero Energy+ projects.

Andrew-Michler-Head-shot-largeAndrew Michler, Hyperlocal Architecture, Colorado. Andrew is a writer and sustainable building consultant based off grid in the Colorado Rockies. He is currently writing the book [ours] Hyperlocalization of Architecture about the next phase of worldwide environmental building design based on place, published by eVolo and due out in Spring 2015. His work in Passive House includes designing and building his own project and helping to provoke and mature the market nationwide in various roles.


Vahid Mojarrab 2014Vahid Mojarrab, WAMO Studio, New Mexico. Vahid Mojarrab, principal and founder of WAMO Studio, an architecture firm in Santa Fe, New Mexico, has over twenty-five years of experience in architecture, planning, design and sustainability, and has worked with Passive House principles for the past six years.  He is internationally recognized for distinctive design, fusing design innovation and new technologies with cultural and environmental sensitivity.  He strives to create architecture that responds intelligently, sensibly, flexibly and aesthetically to a rapidly changing world and has found that the Passive House approach contributes significantly.  Among other accomplishments, he won the Green Works international housing competition, received several AIA Awards and has been published in such notable magazines as Architecture, Architectural Record, Builder Magazine, Domus, Experimental Architecture, Eco Magazine, Net Zero Buildings and Green Building & Design.



Tim Naugler picTim Naugler, Southern Exposure, New Brunswick. Tim received his Carpentry red seal in 2009. That fall Southern Exposure Construction Inc. was started, focusing on energy efficiency and passive solar design, After attending the CanPHI Passive House training course in 2010, his eyes were opened and Passive House & building durability has become a passion. His first Passive House project (the Naugler House) was completed 2011, and the 2nd is nearing completion. The successful projects have stirred strong growth for Passive House in New Brunswick and Prince Edward Island Provinces.



Laura 1Laura Nettleton, Thoughtful Balance, Pennsylvania. Laura Nettleton has over thirty years of experience in housing, green building, and development. Her architectural firm, Thoughtful Balance is dedicated to green building. Thoughtful Balance designed the first certified Passive House project in Western PA, and she has completed several more Passive House projects. Laura is also a LEED accredited professional. She holds a Master of Architecture degree from the University of Oregon and was a member of the second graduating class-accepting women.



Tomas OLearyTomás O'Leary, Passive House Academy, Ireland & US. Designed, built and lives in the first Certified Passive House in the English speaking world. An enthusiastic and passionate advocate for all things Passive House, a jovial and motivational educator and presenter, experienced research scientist and environmental entrepreneur. Globally accredited by the Passivhaus Institut as a Certifier of Passive House buildings and licensed training provider for the Passive House Consultant and Tradesperson programs.

Matthew OMaliaMatthew O'Malia, GO Logic, Maine. Matthew is a registered architect in the State of Maine, Michigan and Ohio and he maintains national NCARB certification. He received a Bachelor in Environmental Design from Miami University, Oxford, Ohio. He worked for architects in Frankfurt, Germany and New York City before completing his post graduate studies in Architecture at the Staedelschule Kunst Akadame in Frankfurt Germany in 1997.  After graduating, Matthew was a project architect at Elliott Elliott Norelius Architecture. In 2008 he founded GO Logic with Alan Gibson.



Andrew Peel 4 - head shotAndrew Peel, Peel Passive House Consulting, Ontario. Andrew is the founder of Peel Passive House Consulting, which provides sustainability consultancy and certification services to the building sector.  Prior to forging out on his own, Andrew worked in a variety of capacities in Europe.  These included managing the UK Government's innovative carbon saving technologies scheme and the Energy Saving Trust's Best Practice Helpline.  He also managed and delivered Passive House, Code for Sustainable Homes, wind turbine development, and thermal modelling projects as well as organizing Passive House study tours.  Further activities included contributing to the development of the UK Government’s housing energy calculation methodology (SAP) and writing both technical and non-technical publications on various sustainability topics.



Hayden RobinsonHayden Robinson, Olson Kundig Architects, Washington State. Hayden Robinson is an architect and PHI-certified passive house designer at Olson Kundig Architects in Seattle, WA. His work combines design and technical ability with special expertise in enclosure-system and high-performance-building design. He has served as founding president of Passive House Northwest and the Passive House Alliance, as a director for the Northwest Ecobuilding Guild, and a representative to the North American Passive House Alliance.

Marc RosenbaumMarc Rosenbaum, South Mountain Company, Massachusettes. Marc Rosenbaum, P.E. is a long-time student of making great buildings. He uses an integrated systems design approach to help people create buildings and communities connected to the natural world, supporting both personal and planetary health.  
Much of his recent work has been Zero Net Energy Buildings, Deep Energy Retrofits and Passive Houses. His work has been recognized nationally by ASHRAE, AIA, EEBA, and NESEA, but they didn't see all the mistakes along the way.



Cramer SilkCramer Silkworth, Baukraft Engineering, New York. Baukraft provides enclosure consulting and mechanical system design for residential and light commercial buildings, up to and including Passive House levels of performance. By optimizing (and verifying) the enclosure, the mechanical system can be precisely tuned to the demands of the building without the need for excessive over-sizing, ensuring optimal performance and comfort.

Bio Pic Peter SchneiderPeter Schneider, Vermont Energy Investment Corporation, Vermont. AsSenior Energy Consultant at the Vermont Energy Investment Corporation in Burlington, Vermont, Peter Schneider provides technical support to builders, architects, engineers, affordable housing agencies and homeowners participating in a number of different programs such as Efficiency Vermont’s High Performance Homes, LEED for Homes and Midrise & Passive House.  Peter’s goal is to help his clients design and construct more energy-efficient, healthy, durable and sustainable buildings.  Peter is a certified Energy Rater, Passive House Consultant and LEED for Homes QAD.



nabih tahanNabih Tahan, Cree Buildings, California. Nabih Tahan, AIA, is an international architect, passive house consultant and CEO of Cree Buildings. Nabih’s over 30 years experience in architecture, energy efficiency and sustainable, timber-based construction methods has been honed through work in Austria, Ireland and the US.  Between 1992 and 2005, he developed projects in Europe using prefabricated wood technology meeting the low energy standard.  In 2005, Nabih brought the Passive House Standard to California by retrofitting his own home. It was the first house Passive House in California and the first retrofit in the country.  Today, Nabih is leading Cree Buildings efforts to build residential and commercial projects in the USA.  Cree Buildings is adapting a systems approach, integrating modern wood technology and energy efficient strategies to produce wood components off-site and assemble them quickly and air-tight on-site to deliver resource and energy efficient buildings.



Gernot Vallentin PicGernot Vallentin, ArchitekturWerkstatt Vallentin, Germany. Gernot studied at the Technical University of Munich.  Since 1996 he leads ArchitekturWerkstatt Vallentin with his wife Rena Vallentin. At this time the office attention was extended to a synergy of clearly defined sustainability aspects, design and cost awareness. The Passive House standard has become the office minimum standard to which more and more projects reach beyond and meet a positive energy standard.  Since 1998 Vallentin is a member of the working group Passive House Passive House Institute of Prof. Dr. Wolfgang Feist and has participated within the institute on many built projects in the constant / active improvement of passive houses.

Rena Vallentin PicRena Vallentin, ArchitekturWerkstatt Vallentin, Germany. Rena studied at the School of Economics in Berlin Business Administration. Since 1996 she is a partner of Gernot Vallentin in the ArchitekturWerkstatt Vallentin.  The Passive House standard is defined as a minimum standard office and the office has extended the concept to "Natural Architecture".  Rena Vallentin focuses here on the holistic design concept: The architectural language is to bring the energy-efficient aspects into contemporary expression. Since 2012 she is a certified Passive House consultant. Rena Vallentin is the initiator of the 2013 launched "Memorandum New construction in times of climate change and energy policy" ( in which a rethinking of the architecture is required.



Michael 1Michael Whartnaby, Thoughtful Balance, Pennsylvania. Michael has more than 20 years of experience in sustainably focused multi-family and commercial design. A Certified Passive House consultant, Michael has completed several Passive House projects including a library and healthcare center.  He and Laura Nettleton recently completed Western Pennsylvania's first Passive House project.

Russ Weiser headshot 2014Russ Weiser, HKP Architects, Washington State. Russ has a background in Science and worked as an Assistant Professor at Virginia Tech before becoming an Architect. Russ studied Architecture at University of Oregon and worked at the Energy Studies in Buildings Laboratory (ESBL). Working at HKP Architects since 1999, Russ is familiar with all phases of sustainable design and has a keen interest in reducing barriers to Passive House Construction.

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