TransAlta Corporation (formerly Calgary Power Company, Ltd.) is an
electricity
Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwel ...
power generator and
wholesale marketing
The consumption and production of marketed food are spatially separated. Production is primarily in rural areas while consumption is mainly in urban areas. Agricultural marketing is the process that overcomes this separation, allowing produce to ...
company headquartered in
Calgary
Calgary () is a major city in the Canadian province of Alberta. As of 2021, the city proper had a population of 1,306,784 and a metropolitan population of 1,481,806 making it the third-largest city and fifth-largest metropolitan area in C ...
,
Alberta
Alberta is a Provinces and territories of Canada, province in Canada. It is a part of Western Canada and is one of the three Canadian Prairies, prairie provinces. Alberta is bordered by British Columbia to its west, Saskatchewan to its east, t ...
, Canada. It is a privately owned corporation and its shares are traded publicly. It operates 76
power plants in
Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
, the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, and
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
. TransAlta operates
wind
Wind is the natural movement of atmosphere of Earth, air or other gases relative to a planetary surface, planet's surface. Winds occur on a range of scales, from thunderstorm flows lasting tens of minutes, to local breezes generated by heatin ...
,
hydro
Hydro (from ) may refer to:
Energy technologies
* Water-derived power or energy:
** Hydropower, derived from water
** Hydroelectricity, in electrical form
* "Hydro", AC mains electricity in parts of Canada
* Micro hydro, a type of hydroelect ...
,
natural gas
Natural gas (also fossil gas, methane gas, and gas) is a naturally occurring compound of gaseous hydrocarbons, primarily methane (95%), small amounts of higher alkanes, and traces of carbon dioxide and nitrogen, hydrogen sulfide and helium ...
, and
coal
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other Chemical element, elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
Coal i ...
power generation facilities. The company has been recognized for its leadership in
sustainability
Sustainability is a social goal for people to co-exist on Earth over a long period of time. Definitions of this term are disputed and have varied with literature, context, and time. Sustainability usually has three dimensions (or pillars): env ...
by the Dow Jones Sustainability North America Index, the FTSE4Good Index, and the Jantzi Social Index. TransAlta is Canada's largest investor-owned renewable energy provider.
TransAlta operated Canada's largest surface strip coal mine from 1970 until 2021 through its subsidiary company Sunhills Mining. The 12,600-hectare mine produced 13 million tonnes of thermal grade coal a year. The company announced that it would decommission the Highvale mine by 2021.
On November 2, 2023, it was announced that TransAlta bought Heartland Generation (the third largest electricity generation company at the time) for $658 million. The purchase means that TransAlta now controls 46% of the electricity generation market in Alberta - a development that has been criticized by numerous academics and industry officials as "a catastrophe" and likely to lead to
economic withholding.
History
In 1909, TransAlta began the planning and construction of the Horseshoe Falls Hydro Plant in
Seebe, Alberta. Two years later, Calgary Power Company, Ltd. was born.
That first dam was built by a crew of about 200 with primitive tools such as picks and wheelbarrows. It initially had a 10 MW capacity (13,500
horsepower
Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are t ...
). A second dam was commissioned in 1913 at Kananaskis Falls and was built by close to 500 workers.
At the time, streetcars were responsible for a significant share of Calgary's electrical load. Residential power was just being introduced, and many homes were lit for the first time with electrical lamps because of Calgary Power. Calgary Power's cheap energy is credited with
Canadian Pacific Railway
The Canadian Pacific Railway () , also known simply as CPR or Canadian Pacific and formerly as CP Rail (1968–1996), is a Canadian Class I railway incorporated in 1881. The railway is owned by Canadian Pacific Kansas City, Canadian Pacific Ka ...
's decision to locate its regional engine repair shop in
Ogden, Calgary
Ogden is a residential area, residential neighbourhood in the southeast quadrant of Calgary, Alberta. It includes the districts of ''Lynnwood'' and ''Millican Estates''. It is bounded by Glenmore Trail to the south, Deerfoot Trail and the Bow R ...
, spurring the city's economic development.
Notable leaders from the company's early years included
W. Max Aitken (later known as Lord Beaverbrook) and
R.B. Bennett, who went on to become Canada's Prime Minister from 1930 to 1935.
The company's monopoly position and behaviour made its status as a private corporation unpopular among rural customers and some Calgary residents, and a move to nationalize it was converted to a province-wide referendum in 1948, which came down very narrowly on the side of maintaining its private ownership.
In 1981, the company changed its name to its current name of TransAlta Corporation.
At the end of 2010, TransAlta became the first company to own and operate more than 1,000 MW of installed wind capacity in Canada—almost 30 per cent of the country's total.
TransAlta has gradually been transitioning its energy-generating facilities away from coal, due to adverse environmental effects, towards natural gas. Its last remaining operational coal mine, in Highvale, AB, will cease mining operations on December 31, 2021, and transition to
mine reclamation
Mine reclamation is the process of modifying land that has been mined to restore it to an ecologically functional or economically usable state. Although the process of mine reclamation occurs once mining is complete, the planning of mine recl ...
in the years to follow.
Governance
As of November 2023, TransAlta's corporate officers/senior managers are:
As of November 2023, TransAlta's board of directors consisted of:
Ghost River Reservoir
Since the
2013 Alberta floods, as a temporary partial solution to mitigate flood damage during those months when there is a greater risk of rising water that might cause flooding, the Government of Alberta entered into an agreement with TransAlta to manage water on the Bow River at its
Ghost Reservoir facility. This was extended in 2016 with a new five-year agreement that included water management of its Kananaskis Lakes system (which includes Interlakes, Pocaterra and Barrier) for drought mitigation.
Controversies
On March 21, 2014, the Alberta Market Surveillance Administrator (MSA) filed an application with the Alberta Utilities Commission (AUC) alleging TransAlta manipulated the price of electricity when it took outages at its Alberta coal-fired generating units in late 2010 and early 2011. While TransAlta disputed the MSA's allegations, the AUC ruled TransAlta's actions in relation to four outage events spanning 11 days in 2010 and 2011 restricted or prevented a competitive response from the associated Power Purchase Agreement (PPA) buyers and manipulated market prices away from a competitive market outcome. On Sept. 30, 2015, TransAlta and the province's MSA reached an agreement to settle all outstanding proceedings before the AUC. The settlement, which is in the form of a consent order, was approved by the AUC on Oct. 29, 2015.
Under the terms of the agreement, TransAlta paid a total amount of (CDN) $56 million, including approximately $27 million as a repayment of economic benefit, approximately $4 million to cover the MSA's legal and related costs, and a $25 million administrative penalty. As part of the settlement agreement, TransAlta agreed to discontinue its court appeal of the AUC's decision concerning the four outage events.TransAlta's legal appeal came as a result of the AUC's determination in its ruling that the “MSA did not prove, on the balance of probabilities, that the company breached applicable legislation on the basis that its compliance policies, practices, and oversight thereof, were inadequate and deficient.”
In response to the dispute regarding its understanding of Alberta market rules governing forced outages, TransAlta implemented two independent, third-party reviews of its compliance procedures. The results of the reviews by McCarthy Tétrault and PricewaterhouseCoopers LLP were publicly released, including recommendations for improvement.
In 2015 the Alberta Utility Commission ruled that TransAlta manipulated the price of electricity when it took outages at its Alberta coal-fired generating units in late 2010 and early 2011.
In 2016, it was revealed that TransAlta gave $54,000 to University of Alberta professor Warren Kindzierski to research the health impacts of coal-fired plants near Edmonton. The study concluded that 'the high number of coal-fired power plants near the city of Edmonton doesn't negatively impact the health of local residents,' and was used by TransAlta as 'scientific backing' to push for an alternative to Alberta's then-plan to phase out coal by 2030. Between 2013 and 2015, TransAlta provided an additional $175,000 to the
University of Alberta
The University of Alberta (also known as U of A or UAlberta, ) is a public research university located in Edmonton, Alberta, Canada. It was founded in 1908 by Alexander Cameron Rutherford, the first premier of Alberta, and Henry Marshall Tory, t ...
in sponsorship agreements for research and academic projects. The incident was highlighted by members of the university'
Corporate Mapping Projectfor exemplifying the deeper issue of undisclosed corporate funding and influence in academic research in Canada.
Hydro facilities in British Columbia
Upper Mamquam, built by
Canadian Hydro Developers and operational since 2005, is a run-of-the-river hydroelectric plant 5 km northeast of
Squamish, BC. The penstock is 1.6 km long, dropping 120 meters to the powerhouse containing two 12.5 MW Pelton wheel generators.
Bone Creek a hydroelectric plant constructed in 2011, has a 5 km penstock dropping 148 meters to a powerhouse with two 9.6MW Francis turbines. It is located 90 km south of
Valemount, BC and operated by Valisa Energy Inc. Approximately 72 GWh of power annually is sold to BC Hydro.
Akolkolex, built by
Canadian Hydro Developers and operational since 1995, uses two Francis turbines in a 10 MW run-of-river hydroelectric plant discharging into
Arrow Lakes. It is located 25 km SE of Revelstoke, B.C. The plant produces approximately 37 GWh of electricity annually.
Pingston Creek has a 12 meter high sheetpile rock-fill dam which diverts water to the western shore of
Arrow Lakes. It was built by
Canadian Hydro Developers and Brascan Power and began operation as Pingston Power Inc. in 2003. A 4 km tunnel achieves a huge drop of 557 meters to three 15 MW Pelton wheels to generate about 200 GWh annually.
The project is 53 km south of
Revelstoke, BC.
Energy generation summary

* 8,128 megawatts (MW) of aggregate generation capacity (2020).
* 24,980 gigawatt hours (GWh) were produced at an average plant availability of 90.3 per cent for the year ended December 31, 2020.
* 76 facilities in three geographies: Canada, U.S., Australia
* One surface coal mine in operation: Highvale in Alberta, Canada. Its operations will transition to 100 per cent mine reclamation effective Jan. 1, 2022.
Net Capacity Owned by Fuel Typebr />
(in operation and in development 2021)
Net Capacity Owned by Geographybr />
(in operation and development)
See also
*
References
Citations
Sources
TransAlta Annual Information Form – March 2, 2021*
ttp://www.transalta.com/about-us TransAlta QuickFacts*
ttps://web.archive.org/web/20120205120851/http://www.transalta.com/sustainability/report-sustainability TransAlta 2010 Report on SustainabilityTransAlta History: Celebrating 100 YearsAlberta Utilities Commission (AUC)Market Surveillance Administrator (MSA)Powering Generations: The TransAlta Story, 1911–2011
External links
Company websiteTransAlta Corporation Careers
{{Authority control
1911 establishments in Alberta
Companies based in Calgary
Companies listed on the New York Stock Exchange
Companies listed on the Toronto Stock Exchange
Energy companies established in 1911
Electric power companies of Alberta
Electric power companies of Canada
Canadian companies established in 1911