Énergir (French: [enɛʁʒiʁ]), formerly known as Gaz Métro, is an energy company with 535,000 customers in Quebec and the northeastern United States.

Near the end of the 1940s, industrialists began planning the construction of a pipeline that would connect Alberta and the large cities of Ontario.

Several meetings were organized, and the Quebec Hydroelectric Commission ordered internal studies and sought expert advice.

Negotiations began with several groups and the sale of the network to the Quebec Natural Gas Corporation was concluded in the spring of 1957.

As such, Hydro-Québec was once again under the control of André Caillé, who left the position of President and CEO three months later to become the head of the Québec state company.

[7] In 2004, Hydro-Québec sold its shares of Noverco to the Caisse de dépôt et placement du Québec.

LNG comes from Gaz Métro's liquefaction, storage and regasification (LSR) plant in Montréal East, in operation since 1969.

[20] Biomethane is a renewable and carbon-neutral energy with the same properties as regular natural gas, and it is produced from organic material.

Saint-Hyacinthe became the first municipality in Québec to produce energy through biomethanation, and several projects are now being developed elsewhere in the province of Quebec.

[21] Green Mountain Power (GMP), a subsidiary of Énergir, is the largest electricity distributor in Vermont, serving over 70% of the market and near 265,000 customers.

[22] Green Mountain Power generates a portion of the electricity it distributes but most of its supply is purchased from other producers.

GMP also buys electricity produced with "cow power," a process that uses methane from the manure of dairy cattle to generate clean energy.