Over the past 50 years, the development of the oilsands has changed the face of Alberta, driving innovation and technology to make oilsands a reality. The oilsands are the third largest oil reserve on earth, and despite a cycle of boom and busts, contribute to the prosperity of the province. Industry, however, has not addressed many of the largest environmental impacts generated by the oilsands, and much work is still left to be done. This blog is part of a series where we look back at the last 50 years of the oilsands industry and shed light on a number of the remaining challenges. See Part 2 here and Part 3 here.

After 50 years of production, the oilsands remain among the world’s most carbon intensive large-scale crude oil operations. Studies continue to back this up. The Carnegie Endowment’s Oil-Climate Index suggests most oilsands crude is associated with 31 per cent more emissions than the average North-American crude from the point of extraction through its lifecycle to the point of end use (See Figure 1).

Figure 1. Emissions associated with the full lifecycle of a crude (from extraction to combustion) for a selection of crudes produced in North America

When looking at the carbon pollution associated with the extraction and processing, the Oil-Climate Index suggests that the oilsands generate 2.2 times as many emissions per barrel than the average crude extracted in North America (See Figure 2).

Figure 2. Emissions associated with the extraction and processing for a selection of crudes produced in North America

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