Jusqu'à maintenant, l'Alberta raffinait environ les deux tiers de son bitume, mais la proportion devrait passer de deux tiers à environ 47 %, soit moins de la moitié, d'ici 2017, d'après l'Office de conservation des ressources énergétiques de l'Alberta.
That is in the U.S. Alberta has traditionally upgraded about two-thirds of its bitumen, but that would drop from two-thirds down to about 47%, less than half, by 2017, according to the Alberta Energy Resources Conservation Board.