Sarah Diebel


[email protected]

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Sarah specializes in the Canadian energy and utilities sector.

Sarah’s practice focuses on energy regulatory matters, electricity markets and disputes, and procurement and contracting for energy resources. Sarah advises on market-rule making and administration, and compliance audits, investigations, and sanction orders against market participants.

Sarah also advises on various mechanisms to purchase or supply energy or capacity, including by public procurement or capacity auction. Sarah has experience with wind (on-shore and off-shore), solar, hydro, biomass, natural gas, and nuclear energy resources, and works with project proponents, lenders, utilities, municipal stakeholders, the Independent Electricity System Operator, and other branches of government on energy matters.

Sarah advises the public sector on drafting and amending legislation, regulation and policy directives, and responding to freedom of information (FOI) requests, ombudsman investigations and auditor general reviews, and

Sarah also advises clients on international trade, export controls and compliance with sanctions, including internal compliance programs for global operations.

Sarah completed LLM studies, specializing in Energy & Infrastructure.

Sarah's previous career experience include:

  • CSA Group, Toronto, Vice President, Deputy General Counsel, 2021-2023
  • Independent Electricity System Operator, various Director-level and Senior Manager-level roles with in-house legal. 
    • Ontario Power Authority (2010-15), predecessor to IESO
    • IESO (2015-2021)
      • Senior Manager, Corporate Legal Group
      • Director, Enforcement & Legal, Market Assessment and Compliance Division (MACD)
  • Bruce Power LP, articling student with in-house legal

Beyond Our Walls

Professional Involvement

  • Member, Canadian Bar Association
  • Member, Ontario Bar Association

Community Involvement

  • Board member (2012-2020), Toronto Daily Bread Food Bank
  • Chair (2019-2020), Toronto Daily Bread Food Bank

Bar Admission & Education

  • Ontario, 2008
  • LLM, Faculté de droit Osgoode Hall de l'Université York, 2013
  • LLB, Université d'Ottawa, 2007
  • BA, Université d'Ottawa, 2004