Hydro-Québec

• 1. Introduction

  ›

  Hydro-Québec's logo is a stylized letter Q, built from a circle and a lightning bolt. The Montreal design agency Gagnon/Valkus created it in 1960. By then the company already ran electricity across most of the province. Today, Hydro-Québec is one of the largest hydropower producers in the world. More than 40 percent of Canada's water resources sit inside Quebec's borders, and Hydro-Québec manages most of them. The company generates, transmits, and distributes power across the province, and sends electricity south into New England. It now supplies about 10 percent of that region's power needs. Yet Hydro-Québec began as an act of nationalization. In 1944, the Quebec government seized Montreal Light, Heat & Power and its subsidiary, Beauharnois Power, from private ownership. How did that single takeover grow into a company running 63 hydroelectric stations with a combined capacity of 37,370 megawatts? Why does its dividend to the Quebec government spark argument decade after decade? And what has building dams across the province's north cost the land, the climate ledger, and the Indigenous communities who live there?

• 2. Nationalizing Power

  ›

  Advocates for a public hydroelectric utility in Quebec pointed to high costs, poor rural service, and English-dominated management as reasons for change. Premier Adélard Godbout answered with a policy to spend 10 million dollars a year on rural electrification. That same year the government changed, and new premier Maurice Duplessis opposed any government role in the economy. Rural communities formed local cooperatives instead, to bring in power on their own. Duplessis stayed in office until 1960. During his rule, Hydro-Québec mainly served the Montreal area, and there were no further nationalizations.

  Between 1944 and 1962, Hydro-Québec's installed capacity climbed from 616 megawatts to 3,661 megawatts. Over the same years, it cut residential rates in the Montreal area in half. Duplessis died in office in 1959, closing an era Quebecers still call the Grande Noirceur. Jean Lesage's Liberal Party then swept to power, opening what became known as the Quiet Revolution.

  In 1962, the United States government lent Quebec 300 million dollars. The province used the money to buy up independent power companies. The new government also gave Hydro-Québec sole authority to develop new sites. In 1963, it authorized the company to acquire private distributors, including the Gatineau Power Company and the Shawinigan Water & Power Company. That gave Hydro-Québec reach across the entire province. All 46 rural cooperatives accepted its 1963 buyout offer, except one, Saint-Jean-Baptiste-de-Rouville, which still operates today. In 1964, British Columbia lent Quebec 100 million dollars, and 60 million of that went to Hydro-Québec, a move that stirred controversy in the legislature.

  Quebec's engineers were about to turn their attention to rivers far to the north, chasing power on a scale the province had never attempted.

• 3. Damming The North

  ›

  The Bersimis-1 generating station started producing power in 1956, at a capacity of 1,125 megawatts. Bersimis-2 followed in 1959, at 845 megawatts. The Beauharnois Hydroelectric Generating Station was completed in 1961, at 1,903 megawatts, and the Carillon Generating Station, built between 1959 and 1964, added 752 megawatts.

  Next came the seven-dam Manicouagan-Outardes Project. It included the Jean-Lesage generating station, at 1,145 megawatts, the René-Lévesque generating station, at 1,244 megawatts, and the Daniel-Johnson Dam, at 2,596 megawatts. These stations were originally named Manic-2, Manic-3, and Manic-5. Because they sat roughly 700 kilometres from the cities of southern Quebec, engineer Jean-Jacques Archambault led the effort to raise transmission voltage to 735 kilovolts, the first line anywhere in the world built to run that strong.

  In Labrador, the Churchill Falls Generating Station added 5,428 megawatts. Quebec negotiated a contract letting Hydro-Québec buy that power at 1969 prices all the way to 2041, a deal that became a lasting source of conflict with Newfoundland. In December 2024, Newfoundland premier Andrew Furey and Quebec premier François Legault signed a 50-year memorandum of understanding. It leaves the original contract in place but has Hydro-Québec pay a fixed amount above the 1969 price, still well below market value. If ratified, the company would pay an average of 2.7 cents per kilowatt hour for Churchill Falls power until 2075.

  The first phase of the James Bay Project broke ground in this same era. Hydro-Québec also partnered with Atomic Energy of Canada Limited to build the Gentilly Nuclear Generating Station, a CANDU-design reactor that ran until it was shut down in 2012.

  A downturn in the economy cut electricity demand sharply in the early 1980s, forcing structural change. Hydro-Québec became a joint stock company, with the Government of Quebec as its sole shareholder, paying an annual dividend. It also gained a mandate to export power and work in any energy-related field. In 1986, the Quebec-New England Transmission line began carrying James Bay power roughly 1,100 kilometres south to the Boston area. The second phase of the James Bay Project started in 1987 and took nine years to finish. Construction on the Denis-Perron Dam began in 1994.

  All that power had to travel hundreds of kilometres before it reached a customer, over wires exposed to Quebec's harshest weather.

• 4. Grid Under Strain

  ›

  In 1988, an equipment failure at a substation on the North Shore knocked out power across all of Quebec and parts of New England and New Brunswick.

  The March 1989 geomagnetic storm tripped circuit breakers throughout the transmission network, causing a nine-hour blackout across the province.

  The North American ice storm of 1998 brought five days of freezing rain. It collapsed 600 kilometres of high-voltage lines and more than 3,000 kilometres of smaller distribution lines in southern Quebec. As many as 1.4 million customers went without power, some for as long as five weeks.

  TransÉnergie, Hydro-Québec's transmission division, now operates the largest electricity transmission network in North America. Its high-voltage lines stretch over 33,630 kilometres, including 11,422 kilometres running at 765 and 735 kilovolts, linked by 514 substations. Seventeen ties connect the network to neighbouring provinces and the United States, with a maximum reception capacity of 10,850 megawatts and a maximum transmission capacity of 7,994 megawatts.

  Quebec's grid runs asynchronously from its neighbours on the Eastern Interconnection. It uses the same 60 hertz frequency as the rest of North America, but not the same phase. TransÉnergie relies on back-to-back HVDC converters to trade power across that divide. That separation let Hydro-Québec stay largely unaffected by the Northeast Blackout of the 14th of August 2003, apart from five hydro plants on the Ottawa River tied directly into Ontario's grid. A new 1,250-megawatt back-to-back HVDC tie at the Outaouais substation, near the Ontario border in L'Ange-Gardien, has been running since 2009. Its 315-kilovolt line has been fully operational since 2010.

  Keeping the lights on took massive investment, and where the profits from that investment should go has divided the province for decades.

• 5. Dividends And The Privatization Debate

  ›

  In 2023, Hydro-Québec paid 2.47 billion dollars in dividends to its sole shareholder, the Government of Quebec.

  That obligation traces back to 1981. That year, the Parti Québécois government issued itself 43,741,090 shares in the company, each valued at 100 Canadian dollars. The same amendment required Hydro-Québec to pay out up to 75 percent of its net earnings as dividends, reshaping the social pact the company was built on in 1944.

  Economist Marcel Boyer and businessman Claude Garcia are both tied to the Montreal Economic Institute, a conservative think tank. They have long argued that private management would run the company better, and that a sale could shrink Quebec's public debt.

  During the 2008 election, Mario Dumont of the Action démocratique du Québec floated selling a minority stake in the company. A Léger Marketing poll that November found 53 percent of Quebecers opposed his plan to sell 7.5 percent of the company's equity, while 38 percent favoured it.

  Appearing on Guy A. Lepage's talk show, former premier Jacques Parizeau said the idea would be deeply unpopular. He noted that Quebecers see Hydro-Québec as a national success story and a source of pride. The Liberal government has repeatedly said the company is not for sale.

  Yvan Allaire of Montreal's business school HEC argued for raising electricity rates instead, as a way to grow the government's dividend without selling any part of the company. Columnist Bertrand Tremblay of Saguenay's Le Quotidien took the opposite view. In his words, Quebec was once "somewhat of a banana republic, almost giving away its forestry and water resources."

  Academics Léo-Paul Lauzon and Gabriel Sainte-Marie of UQAM argued that privatization would raise costs for residential customers and break the social pact between the province and its people.

  Owning the company was one debate. What its dams had done to the land they flooded was another matter entirely.

• 6. Rivers, Mercury And Northern Communities

  ›

  Since the late 1970s, Hydro-Québec has run a network of 27 monitoring stations in the James Bay area, tracking its dams' effects on the environment.

  Thirty years of that research found mercury levels in fish rise three to six times within 5 to 10 years after a reservoir floods. Levels then gradually decline back to normal within 20 to 30 years, a pattern matched by similar studies in Canada, the United States, and Finland.

  Flooding does displace or kill animals that cannot migrate, turning land into water. But habitat lost to flooding is partly replaced along the exposed banks of the rivers below the dams, and reservoir islands support wildlife similar to natural ones. Migratory species such as caribou have grown so numerous that hunting quotas have been expanded.

  Greenhouse gas emissions from a new reservoir rise for a few years after it floods, then settle after about a decade to levels close to nearby natural lakes. Gross emissions from reservoirs in the James Bay area run around 30,000 tonnes of carbon dioxide equivalent per terawatt-hour generated. Hydro-Québec says its hydroelectric plants release 35 times less greenhouse gas than comparable gas-fired plants, and 70 times less than coal-fired ones.

  Hydroelectric development accelerated a shift toward settled life among the Innu of the North Shore and the Cree and Inuit of northern Quebec, a process that had begun in the 1950s. A Hydro-Québec report on the years from 1970 to 2000 found some Cree communities had reached a point "where they increasingly resemble the industrialized society of the South." The same report noted that unemployment and social problems grew once large construction projects wound down in the 1990s.

  Public opposition helped kill the Suroît project in November 2004. Afterward, under new chief executive Thierry Vandal, the company set three conditions for any new hydroelectric project: it had to be cost effective, environmentally acceptable, and welcomed by local communities. Since 2007, Hydro-Québec has reported under the Global Reporting Initiative. It employs 250 professionals and managers in its environmental field, working under an ISO 14001-certified management system.

  The Innu Nation filed a $4 billion claim against Hydro-Québec in October 2020, seeking compensation for damages caused by the Churchill Falls Generating Station.

• 7. Rates And Everyday Customers

  ›

  By the end of 2010, Hydro-Québec served 4,060,195 customers, split across residential and farm, commercial and institutional, and industrial rate categories.

  The average residential and farm customer used 16,857 kilowatt-hours of electricity in 2011. Electric heating drives most of that demand, supplying 77 percent of homes' space heat and 90 percent of their hot water.

  Despite Quebec's cold winters, the residential sector produced just 5.5 percent of the province's greenhouse gas emissions in 2006, or 4.65 megatonnes. That figure had fallen 30 percent since 1990.

  Because so many homes rely on electric heat, demand swings sharply with the weather, and Hydro-Québec's system peaks in winter rather than summer. A new all-time record was set on the 23rd of January 2013, with a load of 38,910 megawatts. It surpassed earlier records of 37,717 megawatts in 2011-37,230 megawatts in 2009, and 36,268 megawatts in 2004.

  Residential rates carry a daily subscription fee of 40.64 cents, plus tiered pricing. As of the 1st of April 2012, customers paid 5.32 cents per kilowatt-hour for the first 30 daily kilowatt-hours, and 7.51 cents beyond that. The average residential bill ran about 100 Canadian dollars a month in 2008. A five-year rate freeze between May 1998 and January 2004 gave way to eight separate increases through 2010, totalling 18.4 percent. Rollbacks of 0.4 percent in 2011 and 0.5 percent in 2012 followed.

  In 2007, Hydro-Québec pulled out of a federal smart meter initiative, saying it would be "too costly to deliver real savings." A two-year pilot with 2,000 customers in four cities followed. A 2010 report found only minimal savings from time-of-use pricing, though the company still planned to phase in advanced metering between 2011 and 2017.

  Industrial customers bought 68.4 terawatt-hours of power in 2010-40.4 percent of everything Hydro-Québec sold domestically. Since 1974, the province has reserved the right to allocate large blocks of power to companies case by case. That allocation threshold fell from 175 megawatts to 50 megawatts under a 2006-2015 energy strategy. In 2010, the largest industrial users paid an average of 4.66 cents per kilowatt-hour, while companies with special contracts paid 3.07 cents.

  In 1987, Hydro-Québec struck risk-sharing power deals with aluminum producers Alcan and Alcoa, pricing electricity partly on world aluminum prices and the Canadian dollar. On the 10th of May 2007, the province renewed Alcan's water rights on the Saguenay and Peribonka rivers, in exchange for continued investment and jobs in Quebec, a deal that survived Alcan's later merger with Rio Tinto. On the 19th of December 2008, Hydro-Québec signed a similar agreement with Alcoa, running until 2040. It covers three smelters, in Baie-Comeau, Bécancour, and Deschambault-Grondines, and lets Alcoa expand its Baie-Comeau plant by 110,000 tonnes a year, to a total of 548,000 tonnes.

  Economists Jean-Thomas Bernard and Gérard Bélanger of Université Laval estimated in 2008 that each job tied to a new aluminum smelter costs the province between 255,357 and 729,653 Canadian dollars a year, once lost export revenue is counted. Luc Boulanger, who heads the association representing Quebec's large industrial customers, disputed that math: "We find that the more we export, the less lucrative it gets."

  In 2018, after China cracked down on cryptocurrency mining, Bitcoin miners began flocking to Quebec, drawn by a provincial energy surplus equal to 10 terawatt-hours a year.

• 8. Exports, Research And Ventures Abroad

  ›

  In 2017, Hydro-Québec earned net export revenue of 1,651 million dollars from 34.4 terawatt-hours of electricity, sold mostly to New England, 53 percent, New York, 23 percent, and Ontario, 13 percent.

  Most export sales are short-term deals, but the company has signed long-term contracts too. In 1990, it agreed to a 328-megawatt deal with 13 electric distributors in Vermont. On the 11th of March 2010, Vermont's two largest utilities, Green Mountain Power and Central Vermont Public Service, signed a tentative 26-year deal to buy up to 225 megawatts of hydro power from 2012 through 2038. The deal depended on large hydro being legally classified as renewable energy.

  With Ontario, Hydro-Québec signed a 500-megawatt seasonal capacity-sharing deal in 2015, since Ontario's demand peaks in winter while Quebec's peaks in summer. A follow-up long-term agreement, signed in 2016 and running from 2017 to 2023, sends 2 terawatt-hours a year to Ontario, in exchange for backup capacity during Quebec's winter peaks.

  Hydro-Québec's ventures outside Quebec began in 1978, when it created the subsidiary Hydro-Québec International to sell its expertise abroad. Over the following 25 years, it invested in Transelec in Chile, the Cross Sound Cable in the United States, Consorcio Transmantaro in Peru, Hidroelectrica Rio Lajas in Costa Rica, Murraylink in Australia, and the Fortuna generating station in Panama.

  In 1999, it briefly held a 17 percent stake in SENELEC, Senegal's electric utility, when the Senegalese government sold part of the company to a consortium led by the French firm Elyo. That sale was cancelled in 2000, after Abdoulaye Wade won Senegal's presidential election.

  The same year, Hydro-Québec International bought a 20 percent stake in China's Meiya Power Company for 83 million Canadian dollars, holding it until July 2004. Its staff also trained Chinese engineers in management, finance, and dam-building at projects including the Three Gorges Dam. Between 2003 and 2006, the company sold off all of its foreign investments at a profit, sending the proceeds to Quebec's Generations Fund, a trust set up to pay down public debt. In 2022, through its subsidiary HQI US Holding, Hydro-Québec bought Great River Hydro for 2.2 billion US dollars.

  Alongside its dealmaking, Hydro-Québec has invested in research for more than 40 years. Engineer Lionel Boulet founded its research institute, IREQ, in 1967, in Varennes, on Montreal's South Shore, giving Hydro-Québec the only large research institute run by a utility in North America. It operates on an annual budget of roughly 100 million Canadian dollars, focused on high voltage systems, mechanics, and network simulation.

  In 1994, IREQ engineer and physicist Pierre Couture built the first prototype of an electric wheel motor that caught public attention in Quebec. A 1998 spinoff, TM4 Electrodynamic Systems, later carried the idea forward, partnering with France's Dassault and Heuliez to build prototype electric cars called the Cleanova in 2006. In early 2009, at the Montreal International Auto Show, Hydro-Québec announced that Tata Motors had chosen its engine for a demonstration version of the Indica, to be road-tested in Norway.

  In April 2011, the Quebec government set a target for a quarter of new cars sold in 2020 to be electric, and asked Hydro-Québec to build public charging infrastructure. The first 30 stations of what became the Electric Circuit network opened in March 2012, and its first 400-volt fast charger followed in 2013. By 2023, the network offered nearly 3,500 public charging stations across Quebec and eastern Ontario.

  Recent research by Gazar and colleagues, published in 2024, modelled how cross-border transmission links, new hydroelectric capacity, and energy demand in the northeastern United States and Canada relate to each other, using a Bayesian network analysis. Their work found that growth in Quebec's hydroelectric capacity has tracked domestic demand and market prices more closely than the size of transmission corridors heading south, a finding likely to shape whether future US-Canada intertie projects must weigh new reservoir development in their environmental reviews.