Lisa DeMarco

Lisa DeMarco

Senior Partner, DeMarco Allan LLP

Lisa DeMarco is a senior partner at DeMarco Allan LLP, she is recognized as a Canadian and international expert in climate and energy law. She has over two decades of experience in law, regulation, policy, and advocacy relating to oil, gas, power and all aspects of climate change. Ms. DeMarco represents several governments and leading energy companies in a wide variety of natural gas, electricity, pipeline and energy storage matters before various regulatory agencies, including the Ontario Energy Board and the National Energy Board.

Ms. DeMarco also assists leading Canadian energy companies and Indigenous business organizations on domestic and overseas power project development, renewable power projects, energy storage projects, sustainable and climate finance transactions, carbon capture and storage, climate related financial disclosures, climate corporate environmental and social governance, green bonds, and sustainable business strategy. Ms. DeMarco plays an ongoing and active role in the development of energy and GHG emissions law and policy throughout Canada and internationally. She has been an adjunct professor at Osgoode Hall Law School, is a guest lecturer at a number of law schools, and presents regularly.

Ms. DeMarco is ranked by Chambers Global as one of the world’s leading climate change lawyers and regularly attends and advises on related United Nations negotiations. She is ranked and repeatedly recommended by L’Expert, Expert Guide, International Who’s Who, and Chambers Canada as a leading energy (oil, gas and electricity) and environment lawyer. Ms. DeMarco has worked for multilateral development banks and energy companies on deals and projects in India, Brazil, Sri Lanka, Thailand, Argentina, Chile, Ireland, Africa, Mexico, China, Russia, California, Alberta, Ontario, Nova Scotia, British Columbia, Saskatchewan, Prince Edward Island, and Québec. She was also lead counsel on all aspects of the successful sale of an Ontario power distribution company to Hydro One. Ms. DeMarco was an appointed member of Ontario Premier’s Climate Change Advisory Panel, Clean Energy Task Force, and Climate Action Group.

Ms. DeMarco is a member of the Board of Directors of the Advanced Energy Centre at MaRS, and International Emissions Trading Association. She is a graduate of the University of Western Ontario (BSc Hon. – 1990), the University of Toronto (MSc. – 1992), Osgoode Hall Law School, York University (LLB – 1995) and the Vermont Law School (MSEL, summa cum laude – 1995) and is called to the bar in England and Ontario.



Sessions with this Speaker

Climate Inaction on Trial: The Future of Litigation, Youth Advocacy and Industry Response

  • Climate Crisis
Recognizing the enveloping climate crisis as an imperative challenge and defining issue of our lifetime, we explore litigation as an emerging tool to affect policy change for those at the forefront of ardent climate action.

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Liane Langstaff Environmental Lawyer, Gowling WLG
Larissa Parker Law student, Winner of The Economist’s Open Future Essay Competition
Lisa DeMarco Senior Partner, DeMarco Allan LLP
Sebastian Ennis Associate, Arvay Finlay LLP
Nadine Nakagawa City Councillor, City of New Westminster