Dennis Langen

Dennis P. Langen Partner

Dennis Langen


  • University of Alberta (J.D. with distinction, 2002)
  • University of Alberta (B.Sc. with distinction, 1994)

Bar Admission

  • Alberta, 2003
Representative Work
  • AltaGas Canada Inc. in its proposed C$1.7B acquisition by the Public Sector Pension Investment Board and the Alberta Teachers' Retirement Fund Board.
  • Pembina Pipeline Corporation in its C$4.35B acquisition of Kinder Morgan Canada Limited and the U.S. portion of the Cochin Pipeline system.
  • Pipeline and midstream companies, oil and gas producers and marketers, and gas distribution utilities in connection with NEB applications for, and complaints relating to, setting rates and revenue requirement, including cost of capital, for transmission pipelines; and in connection with NEB applications to establish new services and to set tolls and tariffs for transmission pipelines.
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  • Chambers Canada 2020 as a leading lawyer in Energy: Oil & Gas (Regulatory) and Energy: Provincial Regulatory & Litigation (Alberta).
  • The Canadian Legal Lexpert Directory 2019 as a leading lawyer in Energy (Oil & Gas).
  • Best Lawyers in Canada 2020 in Administrative and Public Law, Energy Law, Energy Regulatory Law, Oil & Gas Law and Natural Resources Law.
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Speaking Engagements
  • “Canada Energy Regulator: A rose by any other name - what does it do; how does it work?”, Energy Regulatory Forum, May 2018.
  • “Federal and Provincial Energy Regulatory Regimes in Alberta”, APEGA Luncheon Series, April 2015.
  • "Canadian Regulatory Update: Implications of Current and Proposed Regulations and Reform for Pipeline Development", The North American Pipeline Forum, 2011.
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