It is time to better understand the Canadian Refinery system.
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Despite a decline in the number of total refineries, the average capacity per refinery in Canada has increased. This indicates that consolidation has resulted in larger refineries and greater efficiencies. The average capacity per refinery in 2016, reached 18 10exp3 m3/d (114 Mb/d) – an all-time high. There had been no new refineries built in Canada in 30 years. However, in late 2017, the Sturgeon Refinery located northeast of Edmonton began operations. "
"Canada is the seventh largest crude oil producer in the world. Despite this, Canadian refineries process
less than 30% of that crude oil. (Figure 7) This is mainly because of the size of Canada’s refining industry
compared to the resource size, the location of its refineries, and the lack of cross-country pipeline
connectivity. Canadian refineries operate mostly to meet domestic needs, with some exports.
Most refineries, including those in Canada, do not operate at 100% capacity. This is mostly due to planned/
unplanned maintenance and outages. In 2017, Canadian refineries operated at 84% of their capacity."
https://www.neb-one.gc.ca/nrg/sttstc/crdlndptrlmprdct/rprt/2018rfnryrprt/2018cndnrfnrvrvw-eng.pdf