Speakers
Tony Cupido
Biography
Tony Cupido, Ph.D., P.Eng., is a seasoned engineering and sustainability expert with 37 years of experience in engineering, facilities management, and capital development. As Mohawk College’s inaugural Research Chair, Sustainability, he leads cutting-edge research to support a low-carbon economy while engaging students in real-world solutions to social, economic, and environmental challenges. His work includes developing an operational performance database for Canada’s largest institutional net-zero energy and zero-carbon building, The Joyce Centre for Partnership and Innovation, and collaborating with industry and academics on sustainable practices and new technologies.
Jack Dienna
Biography
Jack DiEnna is the Executive Director & Founder of the Geothermal National & International Initiative (GEO-NII) and Principal of Indian Rock Associates LLC. With over 40 years of experience in the electric utility and geothermal heat pump industries, he is a nationally recognized expert in geothermal heat pumps, including marketing, financing, and their economic and environmental benefits. His expertise is sought after by government officials, trade allies, and industry associations worldwide in advancing geothermal and renewable technologies.
Fatima Syed
Biography
Fatima Syed is an award-winning Mississauga-based journalist with The Narwhal, where she reports on energy and environmental issues across Ontario. She has worked for The Walrus, the Toronto Star, The Logic, and National Observer. She has hosted podcasts with The Big Story and CANADALAND. She is also the vice-president of the Canadian Association of Journalists. She was the winner of the 2022 World Press Freedom Canada Award for her coverage of the pandemic in Peel Region for The Local.
Heather McDiarmid
Biography
Heather McDiarmid is the Principal at McDiarmid Climate Consulting which specializes in research, analysis, and communications related to reducing greenhouse gas emissions from the residential sector.
Jacob Komar
Biography
Jacob Komar, P.Eng., CGD, is the Principal and lead mechanical engineer at Revolve Engineering Inc., specializing in Net Zero building design, energy modeling, and geothermal systems. He has designed over 20 Net Zero buildings and 70+ commercial geothermal systems for offices, apartments, and government facilities. With a background in both traditional and green HVAC design, he now focuses solely on sustainable, energy-efficient buildings. Jacob co-chairs Edmonton’s Energy Transition and Climate Resilience Committee and is the president and founding member of the Western Canadian Geo Association (WCGeo).
Will Rea
Biography
William Rea first interned at HTS in 2006. After completing his engineering degree at the University of Waterloo, he joined HTS full-time in 2010. Over the years, William continued to show a deep interest in technical understanding of HVAC products and systems. showcasing leadership and a knack for strategic thinking. In 2024, he assumed the role of principal at HTS, where he continues to spearhead projects that push the boundaries of technological advancement.
Peter Halsall
Biography
Peter co-founded Purpose Building in 2018 after leading the growth of the Halsall Group into a 350-person, mission-driven team and establishing it as a national sustainability leader. He later served as Executive Director of the Canadian Urban Institute, focusing on low-carbon solutions. With expertise in infrastructure, real estate sustainability, and corporate strategy, Peter helps clients maximize their sustainability goals. His industry contributions have earned him multiple awards, including the PEO Gold Medal and Lifetime Achievement Awards from the Canada Green Building Council and Sustainable Buildings Canada. He was inducted into the University of Toronto’s Engineering Alumni Hall of Distinction in 2009.
Serina Carbone
Biography
Serina Carbone is the Vice President of Operations & Sales at DeSantis Homes, where she leads residential and condominium developments with a strong focus on sustainability. With over 13 years of experience, she oversees multiple departments, driving innovation and operational excellence. Serina is spearheading DeSantis Homes’ first geothermal building in Grimsby, reinforcing the company’s commitment to energy efficiency. She also serves on the Grimsby Chamber of Commerce Board of Directors and was a finalist for the GNCC Women in Business Corporate Leadership Award, recognizing her leadership in the Hamilton and Niagara Region.
Alex Hill
Biography
Alex Hill has over 20 years of experience in clean energy and energy efficiency, specializing in energy modeling, policy design, and program evaluation. He leads Dunsky’s Opportunity Assessment practice, delivering industry-leading potential studies on distributed energy resources, including efficiency, demand response, electrification, and EVs. Alex also heads Dunsky’s Financing practice, focusing on feasibility studies, financing strategies, and program design for clean energy and building retrofits.
Patrick Marion
Biography
As Senior Procurement & Sustainability Manager at Mattamy Homes Canada, Patrick leads the integration of geothermal technology in the low-rise division, advancing the company’s sustainability initiatives. With a background in supply chain management and process improvement, he focuses on optimizing operations while promoting energy-efficient building practices. Patrick collaborates with homeowners, trade partners, utilities, and government stakeholders to drive innovation and expand geothermal adoption in residential development.
Rae-Anne Miller
Biography
Rae-Anne is a Professional Engineer with a Bachelor’s degree in Electrical Engineering as well as an MBA and has been a dedicated leader at the forefront of sustainability at the City of Toronto for over 10 years. As the Project Director of Net Zero Buildings and Building Emission Performance Standards within the Environment, Climate and Forestry Division, she spearheads a talented and diverse team. Together, they are instrumental in the city’s ambitious mission to combat climate change.
Bram Atlin
Biography
Bram Atlin is the Lead of the Multi-Unit Residential Team at Smith + Andersen’s Toronto office, delivering innovative solutions for the GTA’s most impressive high-rise developments. With a career rooted in the firm since his co-op days at the University of Waterloo, he has designed and managed diverse projects across Canada. His portfolio spans high-rise residential, institutional, commercial office, data centres, and community centers, showcasing his deep technical expertise. Bram’s leadership continues to drive forward-thinking design and engineering solutions in the evolving urban landscape.
David Brodrecht
Biography
David Brodrecht is the Senior Geothermal Engineer in the Energy and Carbon Solutions Group
at WalterFedy. He has over 25 years of experience in renewable energy systems, with over 18
years in the geothermal industry working across multiple markets from residential to large scale
commercial and municipal projects. David is a recognized authority in geothermal systems, with extensive experience designing geothermal systems, conducting feasibility studies and energy audits. His role as a board member of the Ontario Geothermal Association and ASHRAE membership demonstrates his commitment to shaping industry guidelines and standards. With a Master’s from Purdue University and a Bachelor’s from the University of Toronto, David combines academic rigor with hands-on expertise.
John Rathbone
Biography
John Rathbone is the CEO and co-founder of Rathco ENG, bringing extensive expertise in energy systems with a focus on district energy and geothermal design. A Professional Engineer, he has led international teams in planning, designing, and implementing district energy systems across Canada. His technical skills include pre-insulated piping, energy transfer stations, and heat pump integration. With experience managing large-scale, multi-disciplinary projects, John drives innovative and efficient energy solutions. His leadership continues to shape the future of sustainable infrastructure in the industry.
Jay Egg
Biography
After serving in the US Navy nuclear power field, Jay Egg began a career in mechanical design engineering & contracting. Now, as an expert consultant, Jay sits on several technical code committees internationally; notably the technical committee for the IAPMO Uniform Mechanical Code. Jay serves on the Board of Directors for Geothermal Rising. Jay has co-authored two McGraw-Hill Textbooks focused on geothermal HVAC technologies and continues to write curriculum and lecture on the merits of Clean Heating and Cooling technologies.
Adrian Perez Solla
Biography
Adrian Perez Solla is the Sales Manager at Ecoforest, specializing in the heat pump and geothermal industry with over eight years of experience. His expertise spans both technical and commercial aspects, allowing him to navigate this dynamic and innovative field effectively. Managing operations across multiple countries, he stays ahead of market trends and technological advancements to ensure Ecoforest’s products meet industry demands. He also focuses on building strategic partnerships and fostering collaboration to drive sustainable energy solutions. Passionate about renewable energy, Adrian combines technical knowledge with market insights to deliver impactful solutions for a greener future.
Jeff Hammond
Biography
Jeff Hammond is the Executive Director of the International Ground Source Heat Pump Association (IGSHPA), a non-profit advancing GSHP technology globally since 1987. With 35 years in the geothermal industry, he has held key roles at ClimateMaster, Enertech, Geo-Flo, and WaterFurnace. Jeff holds a B.S. in business administration from the University of Saint Francis and an A.A.S. in electrical engineering technology from Purdue University. An active ASHRAE, AEE, and ASAE member, he has contributed to CSA, AHRI, and IGSHPA committees and currently chairs the next edition of the ANSI/CSA/IGSHPA C448 Standard.
Jon Mesquita
Biography
Jon Mesquita, Co-Founder and Chief Operating Officer of Diverso Energy, plays a key role in shaping the company’s strategy and growth. With a strong background in business leadership and project economics, he ensures each geothermal borefield installation is financially, legally, and operationally sound. Jon oversees business management, contract negotiations, and legal frameworks, driving seamless execution and long-term profitability. His leadership strengthens partnerships across real estate and sustainable energy while refining Diverso’s market position. Committed to innovation and strategic growth, Jon aligns operations with industry demands to create lasting value for all stakeholders.
Ali Hoss
Biography
Ali Hoss is the Chief Sustainability Officer at Triovest, leading sustainability performance, strategic growth, and technology innovation for a $12B commercial real estate portfolio in Canada. A recipient of the 2024 Globe and Mail Best Executive Award and the 2020 Canada Energy Innovator Award (AEE), he collaborates with major pension plans to align financial goals with sustainability, driving value creation and asset resilience. Previously, Ali shaped the Canada Infrastructure Bank’s $1B retrofit program and led Toronto’s net-zero policy for existing buildings. He also launched North America’s first performance-based energy conservation program. A professional engineer with a PhD in Mechanical Engineering, he is a published author, speaker, and university guest lecturer.
Michael Ridler
Biography
Michael’s professional journey in the HVAC industry commenced at his family’s HVAC company, laying the foundational stones of a career that has since spanned two decades. His path in HVAC led him to Eden Energy Equipment, where he initially served in technical support before moving to his current roles as Technical Trainer and General Manager. Outside of his professional endeavors, Michael dedicates himself to volunteer work with organizations, including HRAI, CIPH, ARI, and IGSHPA. He is recognized for providing comprehensive technical training to contractors, engineers, and industry stakeholders throughout North America. Michael harbors a deep-seated passion for leveraging new technologies to transform the HVAC and energy sectors, firmly believing in their revolutionary potential. Most importantly he is a firm believer in mentorship, collaboration and open-minded collaboration over competition.
Ben Gilbank
Biography
Ben Gilbank is the Founder & CEO of AltCrest Energy, a renewable energy developer serving the commercial real estate industry. Operating under an Energy-as-a-Service (EaaS) model, AltCrest invests in and develops on-site energy systems ranging from $2M to $30M+ in exchange for long-term energy contracts. AltCrest focuses on three key areas: rooftop solar PV for industrial and commercial buildings, geothermal for net-zero heating and cooling in multi-residential properties, and microgrids for high-power users. Before founding AltCrest in 2022, Ben spent 13 years in commercial real estate development and investments, most recently as Director, Development at QuadReal Property Group.
Catherine Thorn
Biography
Catherine Thorn is the Director of Sustainability & Energy Management at the University of Toronto, leading the university’s Climate Positive commitment. She oversees major carbon reduction, energy conservation, and waste management projects while supporting academic sustainability initiatives. She also guides tri-campus construction and renovation projects, shaping institutional energy and sustainability standards. Previously, Catherine was Senior Director of Community Energy Planning at Enwave Energy, where she led ground-breaking low-carbon district energy projects, including Enwave’s first geoexchange system. She also managed strategic energy services at Golder Associates. A Professional Engineer and Ivey Business School graduate, she serves on the Board of QUEST Canada, with her work published by the UN.
Josh Lewis
Biography
Josh Lewis, P.Eng, CEM, is the Chief Technical Engineer at Nerva Energy, an award-winning energy advisory firm and specialty contractor providing smart building optimization by leveraging niche expertise with leading IoT technologies to ensure buildings function more intuitively and efficiently, creating energy earning & carbon reduction opportunities, and fostering a positive impact on occupancy, quality of life and the overall environment. Josh is an award-winning leader in the energy sector, including being recognized as and AEE Fellow and the AEE International Energy Innovator of the Year in 2019, leading a 2022 & 2025 Clean 50 Top Project, and being the principal on a project which won the 2023 CaGBC Green Building Visionary award.
Caroline Karvonen
Biography
Caroline Karvonen is the Senior Director Sustainability and Stakeholder Relations at BOMA Toronto, the largest Building Owners and Managers Association in North America. For almost 20 years, her career has been focused in the ESG and sustainability fields, with experience at municipal and provincial governments, electricity distribution, and commercial real estate sectors. Caroline has a background in geography and urban studies from Wilfrid Laurier University and a Master’s degree in Environment and Resource Studies from the University of Waterloo. She is a designated Environmental Professional and in 2021 was named to the ‘Clean50’ as one of Canada’s sustainability leaders.
Rob Simpson
Biography
Rob Simpson is Senior Director, Sustainability at CDPQ. Rob’s work supports the company’s global real estate portfolio, primarily with a focus on building energy and decarbonization programs, as well as climate risk adaptation and mitigation. He also supports internal teams with the development and implementation of industry-leading sustainable finance programs. Rob has worked in the real estate industry for over 20 years in several different capacities, including roles in design and construction as well as management and operations. Rob is currently a member of the GRESB Real Estate Standards Committee and has overseen IC’s GRESB participation since 2015. Rob’s education includes MBSc (Building Science), B.Tech (Architecture), BA, and LEED AP.
Ridhima Nayyar
Biography
Ridhima leads the Sustainability program at RioCan. In her 7+ year tenure at RioCan, Ridhima has advanced RioCan’s ESG vision, strategy, and practices. Prior to joining RioCan, Ridhima worked for EY’s Climate Change and Sustainability Services’ practice. In her early years, Ridhima has worked on sustainability and construction projects in United States and India. Ridhima is a Civil Engineer with a master’s degree in environmental science and is trained in ISO 14064-3 (GHG reporting and verification) and holds LEED AP (Operations and Maintenance), WELL AP , GCB.D and PMP certifications.
Katie Harper
Biography
Katie Harper is an Associate with Springboard Communications, which provides media training, digital media campaigns, communications research, and other strategic communications support to environmental organizations. Katie has worked on engaging people in climate action in the non-profit and corporate sectors for 15 years and holds an MSc. in freshwater ecology from McGill University.
Connor Dacquay
Biography
Connor Dacquay is a licensed engineer specializing in ground source heat pump systems, with experience in North America, Asia, and Australia. Since 2018, he has worked as a researcher and consultant, conducting feasibility studies and designing large-scale geothermal systems. Passionate about education, Connor is an instructor for the Certified Geo-Exchange Designer (CGD) course through IGSHPA. During his doctoral studies, he developed an innovative control sequence that enhances GHX efficiency by dynamically adjusting the tint of smart glass windows in buildings. He is licensed in New York, Manitoba, and Ontario.
Rex Camit
Biography
Rex Camit is a Building Systems Engineer with expertise in energy management, HVAC design, and geothermal systems. He holds a Bachelor of Engineering in Building Systems Engineering from Conestoga College, along with advanced diplomas in Mechanical Engineering Technology – Building Sciences and Building Systems Engineering from Seneca College. A certified LEED Green Associate, he also holds BES Operator Class I and II certifications. Currently a registered Professional Geoscientist with APEGA, Rex has extensive experience as a GIS Consultant in geothermal, environmental, and mining sectors. He holds a BSc in Geology from the State University of the Philippines and an MSc in Geological Survey from the University of Twente. An active ASHRAE volunteer, he serves as Technical Committee 1.6 Webmaster and WV Membership Promotion Co-Chair.
Sean Mason
Biography
Sean Mason is a progressive, multi-award-winning builder dedicated to crafting high-performance, energy-efficient homes that meet the evolving needs of today’s homeowners. With a focus on Net Zero Ready and ENERGY STAR® certified properties, his company, SEAN. leads the way in sustainable residential construction, delivering projects that prioritize both quality and environmental responsibility. Sean is proudly driving positive change in Barrie, Bracebridge and across Ontario.