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 companies, oil and gas producers and marketers, and gas distribution utilities in connection with NEB applications to set rates and revenue requirement, including cost of capital, for large-diameter transmission pipelines; and in connection with NEB applications to set tolls and tariffs for large-diameter 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 large-diameter 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), with clients noting "he's smart, has a lot of integrity and he works very hard."
  • The Canadian Legal Lexpert Directory 2018 as a leading lawyer in Energy (Oil & Gas).
  • The Best Lawyers in Canada 2018 in Energy Law and Energy Regulatory 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.