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Rosa sitting in a chair

Our Story

RLC was first established in August 2008 as Jeffrey, Twyman, LLP Regulatory Law Chambers by Rosa Twyman and Paul Jeffrey (the current Honourable Justice Paul Jeffrey). Rosa carried on the firm as Regulatory Law Chambers (RLC).

In its 15 years of operation, RLC has represented numerous companies in Canada’s energy sector, including advising and acting in electricity, oil & gas, pipelines, and water utility matters. RLC represents clients in proceedings before the Alberta Utilities Commission, the Alberta Energy Regulator, the Canada Energy Regulator, the Courts, and in arbitrations and mediations.

Our commitment to our clients and our team is paramount in providing exceptional service in a purposeful, practical, and effective manner. With a proven track record of successful legal outcomes, our firm has been recognized as one of the top regulatory law firms in Canada.

Core Values


We take pride in our work and enjoy what we do. The team at RLC strongly believes in earning the trust of our clients, listening to their needs and desired outcomes. We do so with integrity and collegiality.


We are a high performing team of legal service providers including exceptional lawyers and paralegals who work diligently together to achieve the best outcomes for our clients. We work as a team with experts and clients.


Success for our clients depends on effective strategies. Our unique and in-depth understanding of Canada’s energy landscape allows for a strategic and tactical approach in achieving legal success.


Rosa Twyman
2024 LEXPERT-ranked Lawyer

Lawyers Worldwide Awards Magazine - Lawyers Worldwide Awards

Boutique/Regulatory Law Firm of the Year - Canada

2019, 2020, 2021, and 2022

M&A Today - Global Awards

Best in Energy Regulation/Regulatory Law - Canada

2019, 2020, and 2022

Lawyer International - Legal 100

Best in Energy Regulation Law - Canada

2017, 2019, 2020, 2021, and 2022

Global 100

Most Outstanding Energy Regulation Law Firm - Canada

2017, 2018, 2021, and 2022

Energy (Electricity) Lexpert Zenith Award

Celebrating Today’s Leaders in Practice Excellence.


M&A Today - Global Awards

Regulatory Lawyer of the Year - Canada

2019, 2020, and 2021