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Lewis L. Manning*

  • Tracy Roberts
  • Legal Assistant
  • P: 403.218.7520


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* Professional Corporation

Lewis’ practice focuses on Regulatory/Administrative energy matters. He has extensive experience in energy - electricity matters, and oil & natural gas matters including rate applications, toll design, facilities applications, cost of capital and related matters before the Alberta Utilities Commission (previously the Alberta Energy and Utilities Board) and the National Energy Board. He has appeared at all levels of the Alberta courts in relation to various energy related matters, the BCUC, OEB, Manitoba PUB and the Federal Court and Federal Court of Appeal, and represented clients in arbitrations and energy related contract disputes.

Lewis represents independent power producers, industrial & commercial customers, oil & gas producers, utilities, forest industries, industry associations, regulators, consumers and transmission companies in relation to various regulatory matters. He has participated actively in all matters relating to the restructuring of the gas transmission and distribution sectors in Canada and the electric industry in Alberta. He was also a member of the legislative drafting committee responsible for the Alberta Electric Utilities Act and related matters.

Lewis has a strong civil litigation background and has recently appeared as counsel in the Federal Court and Federal Court of Appeal in relation to a number of first nation challenges to pipeline projects- all of which were resolved successfully. In addition he has conducted a number of civil trials in relation to various commercial and energy related matters. He has also acted as counsel before many other administrative tribunals, including the Development Appeal Board, the Workers Compensation Board, the ERCB, Calgary Real Estate Board, and the Municipal Government Board (Commercial Property Tax Assessment Appeals in relation to gas plants).

Recognition and Ranking

    • 2018 Best Lawyers in Canada: recognized for Energy Regulatory law
    • Canadian Legal Lexpert Directory 2016: repeatedly recommended as a Leading Practitioner for Energy (Electricity)
    • Legal 500 Canada: recommended in the 2016 editorial for Energy (Power)
    • Who's Who Legal Canada 2016: recognized for Energy law
    • Lexpert Special Edition 2016: Leading Canadian Lawyers in Energy
    • Martindale-Hubbell International Law Directory: Peer Review rated

    Bar Admissions

    • Alberta (1982)


    • Concordia University (B.A., 1978)
    • University of Ottawa (LL.B., 1981)
    • London School of Economics and Political Science (LL.M, 1993)
    • Represented a major wind power developer regarding interconnection to the Alberta grid
    • Represented Canadian Oil & Gas producers regarding aboriginal claims and challenges to NEB approved pipelines
    • Represented various industrial customers regarding rate disputes and successfully obtained major refunds from a local utility
    • Represented various Oil & Gas companies regarding generic cost of capital proceeding before Alberta regulators
    • Represented large industrial and commercial ratepayers in successfully challenging more of $33m of surcharges proposed by a local distribution company
    • Provided advice and counsel to a regulatory Board in relation to review and variance application brought by a local utility in relation to its rates
    • Represented a major utility in relation to Alberta transmission tariffs and related matters
    • Represented several major oil shippers in relation to successfully contested NEB tariffs regarding oil pipelines
    • Represented Calgary Health Authorities in relation to successfully contested sour gas well developments
    • Represented oil and gas producers in relation to Mackenzie valley Pipeline matters