Cassels Brock & Blackwell LLP acts for a diverse mix of energy companies, government entities, consumers and financial institutions, among other clients, on oil and gas matters. The team is particularly noted for its growing regulatory offering under the leadership of Calgary-based Jeremy Barretto, who chairs the national regulatory law group and is well versed across a range of energy, natural resources and infrastructure-related issues. Vancouver-based Arend Hoekstra is also recommended for regulatory work, while Calgary-based department co-head Josef Hocher is a key contact for transactions. Associate Liv Desaulniers left to join the Alberta Electric System Operator (AESO) in September 2024.

Legal 500 Editorial commentary

Key clients

  • Trans Mountain Corporation
  • SaskEnergy Incorporated and Many Islands Pipe Lines (Canada)
  • Canadian Natural Resources
  • West Parkland Gas Co-Op
  • Pyrophyte Acquisition Corp
  • Metro Vancouver Regional District
  • McLeod Lake Indian Band
  • Gibson Energy
  • Integra Resources Corp
  • Canadian Nuclear Laboratories

Practice head

The lawyer(s) leading their teams.

Josef Hocher, Jeremy Barretto

Other key lawyers

Arend Hoekstra