Department profile
Osler, Hoskin & Harcourt LLP

Energy: Power (Transactional)

Canada Guide 2026 : Nationwide - Canada

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Osler, Hoskin & Harcourt LLP

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About

Provided by Osler, Hoskin & Harcourt LLP

Osler’s top-tier team of power and utilities legal professionals have represented Canadian, U.S. and international clients on many of the highest profile transactions and projects in the electricity sector. Their unparalleled transactional and commercial experience ensures Osler’s legal advisors have a cutting edge understanding of the relevant issues and the latest developments. At Osler, the team understands the complexities of the regulatory frameworks and policy issues facing power generators using every fuel source, including natural gas, wind, hydro, biomass, biogas, geothermal, solar, nuclear, oil and coal.

Chambers Review

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Energy: Power (Transactional) - Nationwide - Canada

What the Team is Known For
Osler, Hoskin & Harcourt operates a well-regarded energy practice, advising on the procurement, financing, construction and development of major power projects, as well as advising on high-profile transactions and representing clients before provincial and federal regulators. The team operates nationally and offers a particularly deep level of expertise in Ontario and Alberta. With substantial experience in both the public and private sectors, the firm represents domestic and international clients and has a strong nuclear practice, with additional expertise in wind, solar and power transmission projects.
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Work Highlights

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  • Osler, Hoskin & Harcourt continued to advise Nuclear Waste Management Organization on various regulatory and compliance matters, as well as partnership negotiations, strategy, construction and general procurement.

Strengths

Provided by Chambers

  • Osler has deep bench strength and lots of experts.

    Energy: Power (Transactional) respondentCanada

  • Osler has extensive regulatory experience and knowledge and has been invaluable in supporting our legal requirements.

    Energy: Power (Transactional) respondentCanada

  • Oslers have deep jurisdictional experience both in the industry as well as with our utility.

    Energy: Power (Transactional) respondentCanada

Notable Practitioners

Provided by Chambers

  • Rocco Sebastiano
    Rocco Sebastiano

    Rocco Sebastiano

    Based in Toronto, Rocco Sebastiano is an expert in transactional matters across the power sector, with particular strength in nuclear energy projects. He has broad and deep experience across project financing and development matters.

    • Rocco is outstanding.

      Energy: Power (Transactional) respondentCanada

    • He is very good and knowledgeable on the regulatory and nuclear side.

      Energy: Power (Transactional) respondentCanada
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  • Jacob Sadikman
    Jacob Sadikman

    Jacob Sadikman

    Toronto-based Jacob Sadikman's practice includes financing and project development in the electricity industry, with further recognition for his work on renewable energy. He acts on behalf of clients including investors and utilities companies in connection with carbon storage, nuclear and renewable development, and financing advice.

    • Jacob is a trusted adviser and a go-to for power purchase agreements.

      Energy: Power (Transactional) respondentCanada
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  • Richard King
    Richard King

    Richard King

    Richard King offers expertise in energy regulation and advises clients on environmental and aboriginal law issues relating to project development, regularly appearing before the Ontario Energy Board. He is based in Toronto.

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  • Deirdre Sheehan
    Deirdre Sheehan

    Deirdre Sheehan

    Deirdre Sheehan's regulatory expertise spans both the power and renewable sectors, frequently representing her clients before the Alberta Utilities Commission.

    • Deirdre is an incredible asset.

      Energy: Power (Transactional) respondentCanada

    • Deirdre is always very well considered in the advice she provides. She cuts through complexity to deal with the heart of a matter.

      Energy: Power (Transactional) respondentCanada
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  • Elliot Smith
    Elliot Smith

    Elliot Smith

    Toronto-based partner Elliot Smith leverages his background as a professional engineer in his legal practice, advising clients including power producers and project developers engaged in the development, financing and construction of projects. He is particularly active in the renewable energy space.

    • Elliot has a deep knowledge of how we operate, which is very helpful for external counsel to have. He offers practical and efficient advice.

      Energy: Power (Transactional) respondentCanada
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  • Marissa Kirsh
    Marissa Kirsh

    Marissa Kirsh

    Toronto-based Marissa Kirsh is noted for her strong experience in the project financing of various renewable energy related projects.

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Ranked Individuals at Osler, Hoskin & Harcourt LLP (6)

Nationwide - Canada

Members

Provided by Osler, Hoskin & Harcourt LLP

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