LAWYER PROFILE

Seán C O'Neill

Global 2026

McCarthy Tétrault LLP

Ranked in 1 practice area

Energy: Power (Transactional)

Canada

16 years ranked

About

Provided by McCarthy Tétrault LLP

Practice Areas

Co-Lead of the firm’s National Energy Group and Partner in the firm’s Toronto office. Significant experience representing domestic and foreign investors and sponsors in a variety of conventional and energy transition assets, including electricity transmission and distribution, district energy, energy storage, hydrogen, and all electricity generation technologies including nuclear. Has assisted financial institutions and borrowers on project financings and re-financings of power projects across Canada and in the US. Regularly acts for project developers and sponsors negotiating commercial arrangements in the sector, including power purchase and energy service agreements, and joint-venturing and Indigenous participation arrangements.

Career

Ontario Bar, 1997.

Chambers Review

Provided by Chambers

Chambers Global Guide

Energy: Power (Transactional) - Canada

Band 3

Individual Editorial

Seán O'Neill is noted for his diligent handling of transactional and project financing mandates within the power space, with experience acting for renewables, nuclear and gas clients. He chairs the firm's power group from the Toronto office.

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Strengths

Provided by Chambers

Seán knows the market well and is creative in his advice.
Energy: Power (Transactional)Chambers Global Guide
Sean has been invaluable over the years in supporting our successes in Canada and understands our business and people to an exceptional extent.
Energy: Power (Transactional)Chambers Global Guide