IMT Staff
Cliff Majersik, Executive Director, bears primary executive responsibility for the organization. He directs IMT's research into green building, energy efficiency and property value. Mr. Majersik leads IMT's education and outreach to the finance, appraisal and real estate sectors. He provides expert assistance to federal, state and local officials in developing energy and building policy and legislation. He was a leader in crafting Washington's Energy Act of 2008 and Green Building Act of 2006.
Before joining IMT in 2002, Mr. Majersik served as Director of the eProcurement Project and eBusiness Director for Conservation International's Center for Environmental Leadership in Business. Previously, he worked as a management consultant at the Corporate Executive Board specializing in E-commerce, sales-channel management, and strategic customer relationships. Mr. Majersik advised dozens of firms including Carrier, Chrysler, Cisco, BNSF, Verizon, Coke, Oracle, Sony, Tampa Electric, TI and Marriott. In 1994, he founded a web-based collaboration software company, eventually growing the firm to 25 employees. He currently serves on the board of directors of Greenspace NCR and on the Washington DC Green Building Advisory Council. He received his bachelor's degree, cum laude, in Political Economy from Williams College. He is a LEED accredited professional.
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Jayson Antonoff, U.S. Director of the Global Buildings Performance Network (GBPN), leads the U.S. initiatives of GBPN, an international knowledge partnership advancing building energy policies. He is based in the office of IMT, which is GBPN's U.S. hub.
Before joining IMT in May 2012, Jayson was the Energy / Climate Change Policy Advisor for the City of Seattle’s Office of Sustainability and the Environment. There, he initiated and implemented programs to meet the city's goals for energy efficiency and greenhouse gas reduction within the built environment. He was responsible for developing Seattle’s program for mandatory benchmarking and disclosure of energy performance for almost 9,000 nonresidential and multifamily buildings. He also led the city’s efforts to pilot the development of an outcome-based energy code model.
Previously, Jayson consulted on the deployment of renewable energy resources and was co-founder of i-sustain, a sustainability consulting and public advocacy company. He graduated from the University of Texas at Austin with a BS in Electrical Engineering and received an MS in Sustainable Energy Planning from Aalborg University in Aalborg, Denmark.
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Andrew Burr, Director, Building Energy Performance Policy, leads IMT's building energy rating and disclosure activities, providing guidance to policymakers and government agencies, outreach to the real estate and utility sectors, and advocacy for legislative and regulatory policy.
In collaboration with major cities and states, Andrew led the development in 2011 of the nation’s first framework for rating and disclosure policy implementation. He oversaw the development of BuildingRating.org, a joint project with the Natural Resources Defense Council establishing an international hub for rating and disclosure policy resources, and the Data Access and Transparency (DATA) Alliance, an industry partnership to enable building owners and managers to access whole-building energy consumption data. He has presented at events throughout the United States and in Europe and China, and has co-authored research papers on building energy labeling with the New York City Mayor’s Office of Long-Term Planning and Sustainability and the China Ministry of Housing and Urban-Rural Development.
Andrew was previously a reporter and senior editor with CoStar Group, an international commercial real estate information firm, where he launched and managed the company's editorial coverage of energy and sustainability issues. Andrew received a bachelor's degree in political science from Bucknell University.
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Mark Chao, Senior Adviser, leads technical research and writing, especially related to building energy efficiency. Mr. Chao was IMT's first employee. He and David Goldstein founded IMT in 1996.
He has worked as a graduate research assistant to Professor John Holdren and as a research assistant in the Building Energy Analysis Program at Lawrence Berkeley National Laboratory. He has also served as a consultant to the Natural Resources Defense Council (NRDC), Battelle Pacific Northwest National Laboratory, and the Tides Center on energy-efficiency projects in Russia and Brazil. Mr. Chao received his Master of Science degree from the Energy and Resources Group at the University of California at Berkeley. He received his bachelor's degree, summa cum laude, from Yale University.
Marshall Duer-Balkind, Program Associate, Building Energy Rating Program, works primarily at the District of Columbia Department of the Environment, where he manages the implementation of Washington, DC’s energy benchmarking program and collaborates with other cities to share best practices. A DC native, he is excited to be working to improve the sustainability of his home city. Marshall brings to his work a strong belief in the power of sunlight and open technology to empower communities, improve markets, and change how we use energy.
Marshall holds a Masters of Environmental Management from the Yale School of Forestry and Environmental Studies, where he focused on the role of energy and land use policies in climate change mitigation and community economic development. He received his Bachelor’s degree in Political Science, with a minor in Computer Science, from Oberlin College.
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Donna U. Hope, Policy Analyst for the PlaNYC Greener, Greater Buildings Plan, is an IMT employee working full-time with the New York City government. She assists with quality control and data analysis of newly submitted benchmarking reports; coordinates with GGBP partners and stakeholders; and supports outreach initiatives.
Previously, Hope was program manager of the City University of New York (CUNY) Benchmark Help Center, a helpline to assist in compliance with Local Law 84. Prior to that, she worked in private environmental servicing firms, consulted for an independent food compost company, held multiple research positions, and was a fellow of the National Science Foundation and the Environmental Leadership Program. Hope holds degrees from Spelman College and Rensselaer Polytechnic Institute. She is a LEED Green Associate.

Amanda Kolson Hurley, Communications Manager, coordinates public relations and brings writing and editing expertise to IMT. She was previously the executive editor of Architect, the official magazine of the American Institute of Architects. In that role, Amanda reported and edited articles on a wide range of architectural issues, including sustainable design and building performance. In 2010, she was a finalist for a Jesse H. Neal National Business Journalism Award, and Architect was nominated for a National Magazine Award for general excellence.
Amanda has also worked as an editor at Preservation, the magazine of the National Trust for Historic Preservation. She holds a Ph.D. in literature from the University of Bristol, England, and an M.A. from the University of St. Andrews, Scotland.
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Caroline Keicher, Program Manager, Building Energy Performance Policy, leads IMT's outreach efforts on building energy efficiency policy, providing technical guidance, research, policy, and advocacy support to policymakers, government agencies, and other stakeholders. She holds an M.Sc. in Climate Change and Sustainable Development from De Montfort University in Leicester, UK, where she focused on energy efficiency in the built environment and the analysis of time series energy consumption data in local schools.
Caroline previously worked on the Sierra Club's Global Warming and Energy Team, advocating for an increase in federal fuel economy (CAFE) standards for vehicles, and as the South Atlantic Regional Organizer for the Marine Fish Conservation Network. She is a graduate of Green Corps' Field School for Environmental Organizing and received bachelor's degrees in Environmental Science and Zoology, summa cum laude, from the University of Florida. As a North Carolinian, she has strong convictions regarding vinegar-based bbq sauce and sweet tea.
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Andrea Krukowski, Program Associate, works with the Global Building Performance Network on researching best practices for energy code compliance in new and existing buildings. She will also be involved in IMT's building energy rating and disclosure program. Andrea graduated from Brown University with a Bachelor of Science in Mechanical Engineering. While at Brown, Andrea developed a strong interest in sustainable design and energy efficiency through her courses and work with Brown's Department of Facilities Management, which focused on understanding and improving the energy performance of campus laboratory buildings. Previously, she conducted research on the heating, ventilation, and air conditioning systems in large commercial buildings. Andrea is a LEED Green Associate.
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David Leipziger, Project Manager, oversees IMT's work on the District of Columbia's Sustainable Energy Utility and manages the energy rating website BuildingRating.org. He also manages research projects related to building energy rating and disclosure around the world.
David graduated from Brown University with dual degrees in Urban and Architectural Studies. Prior to joining IMT, David worked as a drafter at the design firm Adamstein & Demetriou and as a writer at the Urban Land Institute focused on sustainable urban development proejcts. Thereafter, he worked as a freelance urban policy researcher in Curitiba, Brazil. David hails from our nation's smallest county, in the Commonwealth of Virginia.
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Ryan Meres, Code Compliance Specialist, is working with the Global Building Performance Network to investigate best practices in energy code compliance in new and existing buildings. He will be documenting case studies on the key challenges and benefits of these best practices in an effort to encourage public and private sectors to improve energy code compliance efforts.
Prior to joining IMT, Ryan was an ICC Fellow at the U.S. Department of Energy where he worked on various federal rulemakings. Ryan also worked at the Georgia Department of Community Affairs as a Building Codes Consultant where he led the adoption of energy and green building codes, including the 2009 IECC and rainwater and gray water codes. He is a LEED Accredited Professional, an ICC Certified Residential Energy Inspector and holds a Bachelors Degree in Architecture from the Savannah College of Art and Design. His first position after college was as an EarthCraft House Technical Advisor at the Southface Energy Institute, conducting insulation and air sealing inspections and building envelope and duct leakage testing.
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Chris Potter, Communications Associate, joined IMT in February 2012. He works on a range of communications duties including press outreach and editing IMT publications. Chris leads IMT's social media efforts and looks forward to blogging and producing video for the organization.
Chris comes to IMT from Fenton Communications, the nation’s leading public-interest communications firm. Prior to Fenton, Chris worked as a freelance editorial assistant, writer, and videographer. His work has appeared in the New York Times, New England Home Magazine, on National Public Radio, and on the website RenewableEnergyWorld.com. Chris is a graduate of Franklin Pierce University in New Hampshire.
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Robert 'Bob' Sahadi, Director of Energy Efficiency Finance Policy, leads IMT work to develop and expand energy efficiency financing solutions for homes and commercial buildings. This includes legislative initiatives such as the SAVE Act, a new proposal co-developed by IMT to factor energy cost savings into residential underwriting standards and home appraisal practices.
Bob was previously managing principal of GreenSpace Investment, a green residential financial advisory service. He has held key positions at Fannie Mae, where he was vice president of product development and vice president of mortgage backed securities. While at Fannie Mae, he oversaw the development of the corporation's energy-efficient mortgages and green innovations including Smart Commute for location efficiency, HomeStyle for renovation lending, and a patented protocol to measure residential energy efficiency. He also managed the Home Counselor Online business platform, which served more than 2,000 housing counseling agencies nationwide. He has held multiple positions in the Federal government with the U.S. Department of Housing and Urban Development and the Executive Office of the President, and as chief economist of the Federal Home Loan Bank Board. Mr. Sahadi holds an MBA in finance and an MA in economics from the University of Cincinnati.
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Lotte Schlegel, Chief Operating Officer and Program Director, leads operations forthe organization including hiring and organizational planning. In addition to her operational role, Lotte works on IMT's energy efficiency and green building programs.
Before joining IMT, Lotte worked as an analyst for the Maine Public Utilities Commission on electric utility rate cases, energy procurement, electric reliability issues, and a residential energy efficiency and clean energy program. She has also worked in scientific research and as a project manager for CESiaK, a Mexican environmental organization. She first became interested in energy efficiency while living in Mexico and relying exclusively on solar and wind power for water pumping and electricity. She is a graduate of Wellesley College.
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Adam Sledd, Program Manager, Green Leasing and Federal Buildings Program, works to engage public- and private-sector stakeholders in developing nationally recognized standards for green leasing practices.
As a founding partner at Sledd Properties LLC, Adam brings almost a decade of commercial real estate management experience to IMT. Prior to joining IMT, Adam was a business development and marketing associate at Ready Corporation Worldwide, a leading provider of pre-engineered sustainable building systems. His work there included developing housing proposals for the U.S. Department of Homeland Security as well as the governments of Ghana and Haiti. He has also worked extensively in the film and publishing industries. Adam received his bachelor’s degree in Media Studies from Pitzer College and is currently working on his MBA at American University.
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Sarah Stellberg, Program Manager, Economic and Policy Analysis, oversees IMT's quantitative and statistical research. Sarah works across all IMT programmatic areas, with a special emphasis on energy-efficiency financing, building energy code compliance, and utility sector energy efficiency policies and programs.
Prior to joining IMT, Sarah contributed to the Environmental Law Institute's work on international environmental governance, including a resource manual on climate change adaptation. She also served as a Research Assistant at RCF Consulting, where her work focused on non-market impacts of Great Lakes water resources. She has travelled extensively throughout Europe and Latin America, where she spent a semester studying an Interamerican Development Bank healthcare initiative in Chile. Sarah graduated summa cum laude from Whitman College with a bachelor's degree in Economics and a minor in Spanish. She is a native of Chicago, Illinois.
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Consultants
Ron Nelson, Consultant, leads IMT's contribution to the COMNET collaboration. COMNET aims to establish a national standard for rating commercial buildings and to credential building energy raters, auditors, and trainers. Working with stakeholders in the building assessment industry, his efforts focus on standards for business and worker credentials and the creation of a COMNET business entity to ensure quality and to manage emerging requirements.
Ron's consulting clients include a range of disciplines. He comes to IMT after completing a Masters of Architecture at the University of New Mexico in 2009. He was a physicist with the Los Alamos National Laboratory for 31 years, the majority of which he spent working at the Lujan Neutron Scattering Center. He received a PhD in Physics from Duke University in 1971, an MBA from the University of New Mexico in 1997, and a BS in Physics and Mathematics from Florida State University in 1967.
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Gary Klein, Consultant, has been intimately involved in energy efficiency and renewable energy since 1973. One fifth of his career was spent in the Kingdom of Lesotho, the rest in the United States. He has a passion for hot water: getting into it, getting out of it and efficiently delivering it to meet customer's needs. Recently completing 19 years with the California Energy Commission, his new firm, Affiliated International Management LLC, provides consulting on sustainability through their international team of affiliates. Gary 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. Gary is working under contract to IMT to increase the efficiency of hot water design and distribution in model building energy codes.

Jordan Engel, Consultant, is focusing on digital strategy for IMT and is currently engaged on projects involving data-standards and information-sharing, visualization, website design, and general strategy.
Jordan was already a DC resident by the time the EPA was created. After studying neuropsychology at Wesleyan University, he returned to DC and worked at a prestigious law firm before embarking on a career in information technology. Work as a programmer and tech lead at companies ranging in size from 1 to 90,000 was followed by several years consulting to homeland security and intelligence clients in telecommunications, GIS and visualization, strategy, and organizational development.
When not flying radio-control helicopters, taking award winning photographs, or both, he now works full time on providing product management, technology, and organizational strategy to non-profit organizations or clean-technology companies in the DC area.

Dick Meyer, Building Codes Program Director, leads IMT's efforts to strengthen building codes and improve energy efficiency in residential and commercial buildings across the United States. An enthusiastic advocate for better building practices, his work includes development of innovative practices, policies, incentives and technologies towards this end.
As a building science professional, Dick has many years experience in residential, commercial and industrial construction in addition to being a Certified Building Official and a HERS Certified Rater. A veteran of many model code hearings, he is a member of the International Code Council as well as the National Association of Home Builders. Following graduation from Virginia Tech (A Hokie!), he was commissioned and received his wings as a Navy pilot.
Interns
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