Department profile
Blake, Cassels & Graydon LLP

Energy: Oil & Gas (Regulatory)

Canada Guide 2026 : Nationwide - Canada


Blake, Cassels & Graydon LLP

Rankings

About

Provided by Blake, Cassels & Graydon LLP

Our Energy group has one of the leading energy practices in Canada, serving a comprehensive client base, including E&P companies, midstreamers, marketers, refiners, utility companies, facility and pipeline owners and operators, industrial users, industry financiers, and other stakeholders. We assist with all aspects of their business, from industry agreements to facility construction, collaborative arrangements and joint ventures, and mergers and acquisitions.

Those in the energy sector engage Blakes because of our strong technical expertise and experience advising on all aspects of the energy industry. The Blakes energy law practice has developed significant expertise in the area of power, including acquisitions and divestitures, financing and project development regarding transmission facilities, cogeneration facilities and power purchase agreements.

Blakes Energy Regulatory lawyers have far-reaching experience before key regulatory bodies, working on all phases of project applications and approvals, and with the regulatory aspects of commercial transactions. Our litigators regularly represent clients in virtually every forum across Canada, including the Supreme Court of Canada. We have extensive experience in domestic and international commercial arbitration under the rules of all major national and international arbitral institutions.

Chambers Review

Provided by Chambers

Energy: Oil & Gas (Regulatory) - Nationwide - Canada


What the Team is Known For
Blake, Cassels & Graydon operates a highly regarded energy team with substantial regulatory and transactional strength. In addition to handling upstream M&A and infrastructure work, the practice has a strong midstream component. The firm's clients include major domestic and international stakeholders in the exploration, production and midstream fields, as well as marketers and financiers. With offices across Canada, Blakes has significant expertise in the financing, structuring and regulation of cross-border M&A deals.

Work Highlights

Provided by Chambers

  • Blake, Cassels & Graydon assisted Pembina Pipeline in its CAD3.1 billion acquisition of Enbridge's joint venture interests in Alliance Pipeline, Aux Sable and NRGreen.

Strengths

Provided by Chambers

  • Blake is very responsive and quick to change approaches based on input from multiple business units.

    Energy: Oil & Gas (Regulatory) respondentCanada
  • Blakes has demonstrated extreme flexibility in scaling up and down as the project demands without compromising the quality of their work.

    Energy: Oil & Gas (Regulatory) respondentCanada
  • Blakes pairs deep industry knowledge with outstanding legal expertise, which drives the highest quality work and business outcomes.

    Energy: Oil & Gas (Regulatory) respondentCanada
  • The team's ability to use their experience and translate it into practical advice is a huge asset.

    Energy: Oil & Gas (Regulatory) respondentCanada
  • The firm gets excellent results and is very concise in its advice and arguments.

    Energy: Oil & Gas (Regulatory) respondentCanada

Notable Practitioners

Provided by Chambers

  • Band 1Lars H Olthafer
    Band 1Lars H Olthafer

    Lars H Olthafer

    Lars Olthafer represents clients before energy regulators, demonstrating particular strength in land law matters arising from pipeline and project development. Utilising his background in engineering, the Calgary-based lawyer ably advises on a wide range of regulatory mandates arising from the oil and gas sector, including environmental compliance and First Nations consultation.
  • Band 2Katie Slipp
    Band 2Katie Slipp

    Katie Slipp

    Based out of Calgary, Katie Slipp has a growing reputation for her counsel on regulatory proceedings and compliance matters in the oil and gas space.
    • Katie is a pleasure to work with. She is very adaptable to changing circumstances and is able to keep the business objectives in mind throughout the process.

      Energy: Oil & Gas (Regulatory) respondentCanada
    • She has a strong understanding of regulatory frameworks and great client service that is both proactive and responsive.

      Energy: Oil & Gas (Regulatory) respondentCanada
    • Katie is excellent.

      Energy: Oil & Gas (Regulatory) respondentCanada
  • Band 2Keith Byblow
    Band 2Keith Byblow

    Keith Byblow

    Calgary-based oil and gas lawyer Keith Byblow advises on domestic and international mandates, including acquisitions, strategic partnerships and joint ventures.
    • Keith is one of those deep thinkers who has the ability to deconstruct complex issues really quickly.

      Energy: Oil & Gas (Regulatory) respondentCanada
    • Keith is an excellent technical lawyer and pairs this strength with commercial awareness to drive practical and effective solutions.

      Energy: Oil & Gas (Regulatory) respondentCanada
    • Keith is a fantastic lawyer and his knowledge and industry experience are very beneficial.

      Energy: Oil & Gas (Regulatory) respondentCanada
  • Band 3Chris Harris
    Band 3Chris Harris

    Chris Harris

    Calgary-based Chris Harris operates a growing corporate practice in the oil and gas sector, acting on a wide array of M&A, as well as financing and joint ventures.
    • He is excellent, practical and has great technical skills.

      Energy: Oil & Gas (Regulatory) respondentCanada
    • He knows our business in a way that allows him to advise on a range of implications.

      Energy: Oil & Gas (Regulatory) respondentCanada
    • Chris is super dedicated, hard-working and super timely.

      Energy: Oil & Gas (Regulatory) respondentCanada
  • Band 4Christine Milliken
    Band 4Christine Milliken

    Christine Milliken

    Christine Milliken has a wide-ranging transactional practice which sees her advising on M&A, joint ventures, insolvency and commercial work on behalf of corporate clients in the oil and gas sector.
    • She's extremely strong all around, with great negotiation skills.

      Energy: Oil & Gas (Regulatory) respondentCanada
    • Christine has strong client service skills and understanding of the business and critical legal issues.

      Energy: Oil & Gas (Regulatory) respondentCanada
    • She has excellent level of service and her advice is provided on a consistent basis.

      Energy: Oil & Gas (Regulatory) respondentCanada

Ranked Individuals at Blake, Cassels & Graydon LLP (5)

Nationwide - Canada

Members

Provided by Blake, Cassels & Graydon LLP

Blake, Cassels & Graydon LLP has rankings in the following guides

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