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
  • 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.
  • Electricity market participants, including generators, importers and exporters in connection with Alberta Electric System Operator (AESO) rule proceedings before the AUC; and in connection with Alberta Market Surveillance Administrator (MSA) investigations and related AUC settlement proceedings.
  • Pipeline companies in connection with NEB (including Joint Review Panels) applications to construct and operate transmission pipelines and storage terminals (terrestrial and marine).

See allRepresentative Work
  • 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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