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Blake, Cassels & Graydon LLP

Energy, Projects, Environmental & Aboriginal Law

19 ranked lawyersBand 1CanadaGlobal 2021 View ranking table
chambers review
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chambers review
department information
Ranked Lawyers

Chambers Review

Chambers Research is conducted by 200 Research Analysts, across 200 jurisdictions and provides nearly 6,000 rankings tables. Annually we collect hundreds of thousands of responses from clients, the majority via in-depth interview. Learn more about our methodology.

What the team is known for

Highly regarded energy team with substantial regulatory and transactional strength heavily involved in significant infrastructure projects across Canada. Regularly called on by some of the major players in the conventional and renewable energy sectors to provide commercial and project finance advice. In addition to handling upstream M&A and infrastructure work in the oil and gas patch, the practice has a strong midstream component. Offers a full-service Aboriginal law practice with a particularly strong presence in Western Canada as well as frequently advising on matters in Ontario and Québec. Advises on a broad range of environmental matters including project development, compliance, chemical and waste regulation and endangered species law.


"The team is consistently at the top of their game," interviewees enthuse, adding: "They invest time and effort in their junior members to ensure they are constantly evolving and developing thought leadership on emerging trends in the law."

Sources praise the team's "excellent depth and breadth of knowledge in the energy industry."

Notable practitioners

Alain Massicotte leads the firm's Montréal infrastructure group. Acting for public authorities, sponsors and lenders on a range of project developments, he is appreciated by sources for his "very keen eye and view on what may or may not work."

Managing partner of the firm Bryson Stokes has an "excellent understanding of the power industry and an ability to understand client objectives." He acts for clients on transactional matters in the power sector, including M&A and joint ventures.

Catherine Doyle is renowned in the Canadian PPP and infrastructure space for her representation across project finance and development over a suite of sectors. Handling major projects on behalf of proponents, investors and consortiums, interviewees note she is a "great advocate with a good handle on finance issues as well as legal nuances."

Charles Kazaz enjoys an excellent reputation for his work representing mining companies in the full gamut of environmental issues, including permitting, enforcement and prosecutions. Clients laud him as "a great communicator" who "understands the mining industry" and is "our go-to person."

Duff Harper has expertise in site redevelopments and the transportation of hazardous goods. He is experienced assisting with environmental litigation as well as advising on the environmental considerations of commercial agreements.

Sources describe Jonathan Kahn as "one of the top environmental practitioners in Canada," emphasising that he is "smart, experienced, very well prepared, practical and efficient." He advises on a broad spectrum of matters in the environmental space, including prosecutions and class actions.

Judy Wilson is "an extremely sophisticated lawyer in contract law" with extensive experience in the representation of public authorities. She is considered by interviewees to be "the leading procurement law expert in the country."

Keith Byblow advises on domestic and international mandates in the oil and gas sector, including acquisitions, strategic partnerships and joint ventures. Interviewees note: "He knows the sector and has a lot of commercial experience. He brings that perspective to our work." He heads the firm's energy practice in Calgary.

Lana Finney handles a wide range of environmental matters, including contaminated land claims. One client shared: "She has a great way of walking us through issues and answering questions in a patient, confidence-building manner."

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, he ably advises on a wide range of regulatory mandates arising from the oil and gas sector, including environmental compliance and First Nations consultation.

Marianne Smith assists a range of provincial and municipal authorities with the procurement aspects of public infrastructure projects. She is considered "excellent for the procurement and drafting of construction agreements."

Mark Johnson is considered by sources to be a "very smart lawyer with a really good sense of the issues and a calm demeanour which clients appreciate." He continues to grow his profile for his handling of major developments in social and commercial infrastructure where he represents the interests of proponent consortiums, investors and Crown corporations.

Mungo Hardwicke-Brown is noted for the depth of his industry knowledge in the energy sector, acting on major pipeline transactions and project financing mandates. He is also noted for his experience with transportation and infrastructure matters.

Ben Rogers is widely admired for his experience acting on oil and gas transactions. He represents both offshore and domestic clients in joint ventures, mergers and dispositions. He is managing partner of the firm's Calgary office.

Clients say Roy Millen "quickly grasps political nuances of multiple First Nations to build common understanding of shared interests." Mining companies number among his clients.

Sam Adkins acts on environmental assessments and has experience advising on the Aboriginal law aspects of major projects. One client said: "He has been very clear and concise, demonstrating his knowledge and experience and providing confidence to our organisation in the process."

Terri-Lee Oleniuk advises oil and gas sector clients on regulatory compliance, as well as on environmental and Aboriginal law. "She is very good on her feet," explained one client, adding: "She handles herself very professionally and shows great confidence and clarity."

One source said Tony Crossman provides advice that is both "practical, and tailored to our organisation and its risk profile," summarising that he is "clearly an expert in his field." He advises on a wide range of environmental regulatory issues, representing clients in the energy and mining sectors, among others.

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Energy, Projects, Environmental & Aboriginal Law

Blake, Cassels & Graydon LLP


199 Bay Street

Suite 4000

Commerce Court West




M5L 1A9

View Firm Profile

Ranked Lawyers

Chambers Research is conducted by 200 Research Analysts, across 200 jurisdictions and provides nearly 6,000 rankings tables. Annually we collect hundreds of thousands of responses from clients, the majority via in-depth interview. Learn more about our methodology.


Aboriginal Law

Energy: Oil & Gas (Regulatory)

Lars H Olthafer
Band 3
Terri-Lee Oleniuk
Band 3

Energy: Oil & Gas (Transactional)

Keith Byblow
Band 4
Mungo Hardwicke-Brown
Band 2

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