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 2018 as an “Up and Coming” lawyer in Energy: Oil & Gas (Regulatory) and Energy: Provincial Regulatory & Litigation (Alberta).
  • The Best Lawyers in Canada 2018 in Energy Law and Energy Regulatory Law.
  • The Best Lawyers in Canada 2017 as "Lawyer of the Year" in Energy Law.
See allAccolades
Speaking Engagements
  • “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.
  • "Recent Developments in Environmental Law in the Oil Sands", The Canadian Institute Conference, 2010.