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22CE - Net-Zero Carbon Approaches for New and Existing Buildings

24 May 2018 10:30 AM - 12:00 PM

1.5 ConEd Learning Hours

This session will present two case study projects that are part of the Canada Green Building Council’s (CaGBC’s) Zero Carbon Building Pilot Program, and compare the proposed design solutions for each. One project is a new building designed to be a certified Passive House, use no fossil fuels and be certified to a LEED Gold standard. Because the project is new construction, the zero carbon strategy can employ a highly efficient Passive House thermal envelope, and plan to utilize electric-based HVAC systems to take advantage of B.C.’s low-carbon grid. The second project is an existing building with a highly efficient geo-loop and ground source heat pump, built in 2009 and certified to a LEED Gold standard. Because the project is an existing building, the zero carbon strategy options are limited by the constraints imposed by the existing thermal envelope and already highly efficient mechanical system, each with significant remaining service life. The new versus existing building implications, available energy efficiency options, local energy emissions factors, onsite generation potential, policy guidance and feasibility limits led to contrasting zero carbon strategies.

Learning Objectives

    1. Gain a nuanced understanding of the CaGBC’s Zero Carbon Building Standard and its application in new and existing projects.
    2. Learn how energy emissions factors guide choice of active building systems.
    3. Better understand how technical solutions are limited by feasibility and pragmatism.
    4. Learn the design impact of provincial or municipal policy.


Christian Cianfrone, M.A.Sc., P.Eng., LEED AP BD+C, and Matthew Tokarik, M.A.Sc., EIT, CPHC

Christian Cianfrone is responsible for technical development, project delivery and business development for building-energy-related projects. Most recently, Christian has led the MH energy simulation team in developing the industry-leading, innovative energy optimization tool, Building Energy Mapping. The tool fills a much needed gap in the industry in providing accurate, real-time energy feedback that allows designers maximum flexibility toward meeting their project’s energy goals. Christian is one of Canada’s leading experts on energy simulation and currently sits on numerous committees, including the Energy and Engineering Technical Advisory Group (TAG) for the CaGBC and the Energy & Atmosphere TAG for the USGBC.

Matthew Tokarik is responsible for creating energy models and implementing Passive House strategy for new buildings, and assessing energy use and evaluating energy retrofit options for existing buildings. Recently, he has worked on a number of institutional projects focusing on drastic greenhouse gas (GHG) emission reductions for both individual buildings and entire portfolios. During his Master’s studies, Matthew investigated optimal investment in passive energy conservation measures with respect to both life cycle cost and building performance. He has also instructed sessions at Ryerson University, McMaster University, and George Brown College in building science and building energy modelling.

This session is sponsored by Dryvit Systems Canada.