Patrick Duffy

Patrick G. Duffy Partner

Patrick Duffy


  • University of Alberta (LL.B. with distinction, 2002)
  • University of Lethbridge (B.A. with great distinction, 2002)

Bar Admission

  • Alberta, 2004
  • Ontario, 2004
Representative Work
  • Ontario Energy Board before the Divisional Court, Court of Appeal and Supreme Court of Canada of the Board’s decision to reduce Ontario Power Generation’s nuclear compensation costs by C$145M.
  • Dominion Diamond Corporation in an application to the Mackenzie Valley Review Board for approval of a new diamond mine in the Northwest Territories (the Jay Project).
  • ITC Holdings Corp. on an application to the National Energy Board for an underwater transmission line crossing Lake Erie including responding to a judicial review application before the Federal Court commenced by the Mississaugas of New Credit First Nation.
See allRepresentative Work
  • Chambers Canada 2019 as an “Up and Coming” lawyer in Energy: Power (Regulatory) and Energy: Provincial Regulatory & Litigation - Ontario and a recognised practitioner in Environmental Law.
  • The Canadian Legal Lexpert Directory 2018 as a leading lawyer in Energy (Electricity).
  • The Best Lawyers in Canada 2019 in Energy.
See allAccolades
Speaking Engagements
  • “The evolving connection assessment and planning process in Ontario”, Association of Power Producers of Ontario Conference, November 2016 (moderator).
  • “Aboriginal Law”, OBA Institute, February 2015 (moderator).