David Stevens

Partner Admitted to the Ontario Bar: 1998

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  • Bio
  • Awards & Recognition
  • Professional Involvement
  • Representative Matters
  • Selected Speaking Engagements
  • Selected Publications
  • Insights
  • Education

David is an experienced and practical litigator, with particular expertise in energy regulation. He is comfortable working within complex regulatory environments to find and optimize achievable outcomes. With the ability to hone in on the most crucial and meaningful details amongst large amounts of information, David identifies opportunities for his clients that others may miss.

As Co-Practice Group Leader of the firm's Litigation Group and member of the Energy Group, David practises in the area of regulatory and commercial litigation.

David has deep and broad knowledge about energy regulation in Ontario. For over 20 years, David has advised gas and electric utilities, and other participants in Ontario’s electricity market, on a wide range of regulatory and commercial issues, and regularly appears before the Ontario Energy Board (OEB). Among other things, he assists clients with ratemaking applications, policy consultations, compliance issues, licencing, Measurement Canada issues and regulatory strategy. David often works with energy services providers to ensure that their business practices and documentation are compliant with relevant legal requirements, including those imposed by the OEB and by other government agencies (such as Consumer Services and Measurement Canada). 

David is a frequent writer on energy regulation issues. Over the past three years, David has written more than 200 articles for Energy Insider, and has often had items published in industry publications such as Energy Regulation Quarterly.  

As a commercial litigator, David has been involved with a wide range of matters, including contractual disputes, fiduciary duty cases, competition matters, construction disputes, class proceedings, lease disputes, injunctions and professional negligence matters. He also has expertise in matters relating to Ontario’s Consumer Protection Act, and the obligations imposed by that statute.

David has appeared before the OEB and all levels of Ontario courts, including the Superior Court, Divisional Court and Court of Appeal, as well as before the Supreme Court of Canada, the Federal Court Trial Division, the Competition Tribunal, the Ontario Securities Commission and the Commissioner of Mining and Lands (Ontario).

Awards & Recognition

  • Recognized in The Canadian Legal Lexpert Directory as a leading lawyer in the areas of Energy (Electricity) and Energy (Oil & Gas)
  • Named Best Lawyers' 2022 "Lawyer of the Year" in Energy Regulatory Law (Toronto)
  • Recognized in Chambers Canada and Chambers Global in Energy: Power (Regulatory)
  • Recognized in The Best Lawyers in Canada in Energy Law and Energy Regulatory Law
  • Listed in the Lexpert Special Edition: Energy 2020
  • Listed in the Legal Media Group’s Energy and Natural Resources Expert Guide
  • Lexology Legal Influencer Award (Infrastructure - Canada) Recipient

Professional Involvement

Professional Activities

  • Consultant/Utility Legal Counsel, Adjudicative Modernization Committee, Ontario Energy Board


  • The Advocates' Society

Representative Matters

Counsel to applicants in rate cases and other regulatory proceedings before the Ontario Energy Board (OEB), including the first “Custom IR” case, the first pre-approval of a long-term contract, the first "Integrated Resource Plan" Framework case, rate adjustment proceedings, applications for approval of new services, compliance proceedings, customer service policy reviews, facilities approvals and review motions.

Counsel to consumer finance companies in connection with preparation and review of loan and lease documentation.

Counsel to a large technology company in a $10-million arbitration and subsequent $30-million Superior Court action related to the sale of a joint venture.

Counsel to a public company in an oppression remedy application involving securities law issues around a normal course issuer bid.

Counsel in an environmental contamination case related to a condominium development.

Counsel to the respondent in a leasing and bankruptcy dispute that culminated in a Supreme Court of Canada hearing.

Reported cases include:

Over sixty OEB proceedings, including:

  • EB-2021-0147 (Rate Adjustment)
  • EB-2020-0091 (Integrated Resource Planning)
  • EB-2020-0136 (Leave to Construct)
  • EB-2020-0181 (ICM)
  • EB-2019-0137 (Gas Supply Plan Approval)
  • EB-2018-0056 (Electricity Rates)
  • EB-2017-0182 (Electricity Transmission Leave to Construct)
  • EB-2017-0102 (Earnings Sharing)
  • EB-2017-0086 (Rate Adjustment)
  • EB-2015-0166 (Pre-Approval of Long-Term Contract)
  • EB-2012-0459 (Custom IR Rate Case)
  • EB-2012-0405 (Exemption from Distribution System Code)
  • EB-2011-0226 (Approval of Customer Care Costs)
  • EB-2007-0731 (LPP Class Action Costs)
  • EB-2006-0322 (Review Motion)
  • RP-2006-0034 (Cost of Service)
  • EB-2005-0551 (NGEIR)

Summary judgment motion arising from the sale of a joint venture and related arbitration decision: Nordion Inc. v. Life Technologies Inc., 2015 ONSC 1023.

Appeal of OEB decision around interpretation of settlement agreement: Enbridge Gas Distribution v. Ontario Energy Board, 2011 ONSC 684 (Div. Ct.).

Appeal of motion decision to strike portions of misrepresentation claim: Research Capital Corporation v. Skyservice Airlines Inc., 2009 ONCA 418 (ON CA).

Appeal on differentiated rates for low-income consumers: Advocacy Centre for Tenants-Ontario v. Ontario Energy Board, (2008), 293 D.L.R. (4th) 684 (ON Div. Ct.).

Appeal addressing implications of bankruptcy on commercial lease:  Crystalline Investments Ltd. v. Domgroup Ltd., [2004] 1 SCR 60 (SCC).

Oppression application re. public company: Renegade Capital Corp. v. Schmalz, 2003 CanLII 26110 (ON SC).

Summary judgment motion: Valleytank Inc. v. AR Plus Site Services (Canada) Inc., 2003 CanLII 19752 (ON SC).

Appeal of decision to deny accreditation to a member agency: Family and Credit Counselling Services York Region v. Ontario (Ass. of Non-Profit Counselling Services), 2003 CanLII 4039 (ON Div. Ct.).

Selected Speaking Engagements

"Recent Developments in Energy Regulation," OBA Natural Resources & Energy Law Program, December 4, 2019.

"Service Agreements: Are You Allocating Correctly?" Electricity Distributors Association Affiliate Forum, November 7, 2019.

"New Approaches to Rate-Basing," Electricity Distributors Association Power to Connect Forum, November 29, 2018.

"Careers Breakfast," CAMPUT 2018, May 10, 2018.

"The Future of Energy Storage in Ontario," Ontario Energy Association Speaker Series, November 28, 2017.

"A Primer on Local Distribution Companies for Municipal Professionals," AMCTO Conference, June 13, 2017.

"Regulatory Update: Introduction to Bill 135 & Environmental Policies Impacting Building Construction and Operations," Energy Management: What’s New and What’s Next Thought Leadership Conference, October 26, 2016 and November 2, 2016.

Selected Publications

Co-Author, "Enhancing Ontario’s Electricity Future: Insights and Recommendations From the Standing Committee on Public Accounts," Aird & Berlis LLP, Energy Insider, July 4, 2024.

Co-Author, "Ontario to Reduce EV Charging Rates With Charger Discount," Aird & Berlis LLP, Energy Insider, July 3, 2024.

Author, "Ontario to Offer New Lower EV Charging Rates to Charging Station Owners," Aird & Berlis LLP, Energy Insider, May 9, 2024.

Author, "IESO Releases 2024 Annual Planning Outlook," Aird & Berlis LLP, Energy Insider, March 20, 2024.

Author, "OEB Seeks Input on Review of Electricity Distributor Merger Process," Aird & Berlis LLP, Energy Insider, February 14, 2024.

Co-Author, "Ontario Government Introduces New Consumer Protection Act," Aird & Berlis LLP, Financial Services Flash, October 24, 2023.

"The Battles Over Net Energy Metering," Energy Regulation Quarterly, July 2021.

"Toronto Hydro Rate Decision Punts the Regulatory Treatment of Storage to the OEB DERs Consultation," Energy Regulation Quarterly, April 2020.

"Ontario Government Takes Steps to Reform the Ontario Energy Board," Energy Regulation Quarterly, October 2019.

Co-Author, Halsbury's Laws of Canada - Weights and Measures, September 2019, published by LexisNexis Canada.

“OEB Takes Steps Towards Implementing “Activity and Program Based Benchmarking,” Energy Regulation Quarterly, July 2019.

"The Colour of Money," Water Canada, September/October 2018.

"What's Next for the Ontario Energy Board?" Energy Regulation Quarterly, March 2018.

"OEB Issues Its Largest Rate Case Decision Ever," IPPSO FACTO (APPrO magazine), February 2018.

"Compressed Air Energy Storage Regulation Proposed,” IPPSO FACTO (APPrO magazine), December 2017.

"Third GHG Auction Sells Out," IPPSO FACTO (APPrO magazine), October 2017.

"Ontario's "Fair Hydro Plan" Comes at a (Future) Cost," Energy Regulation Quarterly, September 2017.

"Light Shed on When Electricity Distributors Can Share Customer Data With Police," The Lawyer's Daily, September 27, 2017.

"British Columbia Regulator has No Jurisdiction to Set Low Income Rates, Energy Regulation Quarterly, March 2017.

"Pole Attachment Charges – Ontario Energy Board Initiates a Comprehensive Review," Energy Regulation Quarterly, March 2016.

"Custom IR Rate Model Approved for Toronto Hydro," IPPSO FACTO (APPrO magazine), February 2016.

"Ontario Introduces Energy Planning Legislation," IPPSO FACTO (APPrO magazine), December 2015.

Contributing author with Fred D. Cass, Ron W. Clark and Scott Stoll, Ontario Energy Law: Electricity, December 2012, published by LexisNexis Canada.


  • LLB, University of British Columbia, 1996
  • BA, Queen's University, 1992