Enbridge Mainline — Share of Requested Volume Not Accepted

Each month, the share of the oil that shippers asked to move on Enbridge's Canadian Mainline that Enbridge did not accept because the system was full, computed from the original and accepted nominations Enbridge reports to the Canada Energy Regulator. Starts in January 2016, the first month both figures are published. Shippers often request more space than they expect to use, so a high figure means demand for space was heavy, not that the line ran near empty. It is a whole-system figure: cuts on individual lines can be deeper. For January to September 2017 CER also published its own percentage for the system, and it ran higher — 33% against 18% for January 2017.