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The Role of Forecasts in Planning for Energy Infrastructure: A Historical Look at Past Futures in Postwar Quebec

Published online by Cambridge University Press:  06 May 2024

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Abstract

Forecasts play a central role in the development of energy infrastructure. Since building energy infrastructure is long and costly, energy system planners try to anticipate future demand to avoid both shortages and overcapacity. But energy demand forecasts aren’t neutral: they represent a certain vision of the future that forecasters hope to bring into being. This article uses a historical case study to open the black box of forecasting and the world it contains. It studies electricity demand forecasts made by Hydro-Québec, one of the biggest industrial firms in North America, from the 1960s to the 1980s. Based on linear extrapolation models forecasting exponential demand and endless growth, the state-owned firm embarked on huge hydroelectric megaprojects with deep consequences on the environment and Indigenous lands. The energy crisis of the 1970s, by disturbing energy systems, led to criticism from the provincial government and civil society towards Hydro-Québec’s bullish forecasts that justified its expansionist agenda. This uncertain context favored other methods of predicting the future, like scenario analysis, and brought scrutiny towards the hydroelectric powerhouse’s business. At the crossroads of business history, energy history, and science and technology studies, the article argues that energy forecasts are used by actors like energy suppliers and governments to produce and project power relations onto the future. They become performative when powerful interests coalesce around their vision of the future to implement it.

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Article
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of Business History Conference
Figure 0

Figure 1. The four kinds of energy forecasts produced in postwar Quebec.Source: Hatton-Proulx, 2023.

Figure 1

Figure 2. Forecast of available electricity capacity at Hydro-Québec between 1972 and 1985. White indicates the infrastructure currently under construction until 1977. Gray indicates the deficit between currently planned infrastructure and projected demand.Source: Évolution et prévision des besoins d’électricité au Québec, Hydro-Québec, Archives d’Hydro-Québec, 1973. Used with permission.

Figure 2

Figure 3. Graph representing the historical evolution of electricity demand (dotted line) and a linear extrapolation forecast of future demand (solid line).Source: Dossier argumentaire sur l’Hydro-Québec, Division Relations Collectivités, Service de l’information et Direction Relations Publiques, Archives d’Hydro-Québec, 1977. Used with permission.

Figure 3

Figure 4. Map showing Hydro-Québec’s network in 1979. The province of Québec is dark brown, Ontario light brown, New Brunswick green, and the United States orange. The area of the James Bay project is in red. The Manic-Outardes project is in the center-right of the map. Transmission lines are in orange (already built) and dotted yellow (to be built). Power stations with an installed capacity over 500 MW are indicated by red squares (already built) and yellow squares (under construction). Orange dots indicate major transmission substations.Source: Annual Report, Hydro-Québec, Archives d’Hydro-Québec, 1979. Used with permission.

Figure 4

Figure 5. Quebec’s energy mix in the mid-1970s.Source: Bilan énergétique du Québec (1958-1974), Pellegrin, Bibliothèque et Archives nationales du Québec, 1974. Used with permission.

Figure 5

Figure 6. Presentation of three different energy scenarios predicted by Hydro-Québec until 2000. Scenario A is the most optimistic one regarding economic growth and electricity demand, and scenario C is the most pessimistic.Source: Recommandations de l’Hydro-Québec pour une politique énergétique québécoise, Boyd, Archives d’Hydro-Québec, 1977. Used with permission.

Figure 6

Figure 7. Forecasts of future average annual electricity demand growth produced by Hydro-Québec (blue dots) and the provincial government of Quebec (yellow dots) from 1967 to 1985.Source: Hatton-Proulx, 2023.

Figure 7

Figure 8. Average annual electricity consumption growth on Hydro-Quebec’s network divided by five-year periods.Source: Hydro-Québec’s annual reports, 1965-1985.