Case name

Nadia Mbenga Molima v. Hydro-Québec


Class action

Between 2008 and 2013, Hydro-Québec deliberately manipulated the information submitted to the Régie de l’Énergie by overestimating cost projections and underestimating revenue projections to obtain a higher profit than authorized. During this period, more than $1.2 billion was illegally charged to Quebecers.

The plaintiff is therefore claiming an indemnity corresponding to the variation in Hydro-Quebec’s revenues between 2008 and 2013.


Group members

All natural and legal persons established for a private interest, companies or organizations holding one or more subscriptions who were customers for the defendant Hydro-Québec and paid invoices for their electricity consumption for one or more of the periods between January 1, 2008 and December 31, 2013.



On December 11, 2019, the Quebec Superior Court authorized the class action.

On February 28, 2020, a judge of the Court of Appeal denied Hydro-Québec’s application for leave to appeal this judgment.

On October 15, 2020, the Supreme Court of Canada denied the application for leave to appeal sought by Hydro-Québec.

On June 18, 2021, the Originating application was filed.

On February 24, 2022, the Superior Court approved the notices to members.


The Class’ lawyers

Class members are represented by Archer in collaboration with the firm Trudel Johnston & Lespérance.


To contact us, by email:

If you would like more information or would like to become a potential member of the class action, you can contact us at the following email address:


Judgment authorizing the exercise of the class action

Originating application

Notice to members