pipeline capacity allocation

Enbridge’s long-running effort to revamp how it allocates space — and charges for service — on its 2.9-MMb/d Mainline crude oil pipeline system is about to enter a new and important phase. On July 15, the Calgary, AB-based midstream giant plans to initiate an open season for shippers interested in locking up long-term capacity on the Mainline, which serves as the primary conduit for heavy and light crude from Western Canada to U.S. crude hubs and refineries. If all goes well, shippers will know by late in the year how much space they will have on the system starting in mid-2021, assuming Enbridge’s plan is approved by regulators. This is a huge change. The Mainline isn’t just the largest crude pipeline system out of Western Canada, it’s also the only major line whose service is currently 100% “uncommitted” — that is, the Mainline has no capacity under long-term contracts with shippers. Today, we discuss the latest on the midstreamer’s Mainline tolling plan.

The recently mandated reduction in Alberta crude oil production has helped to ease takeaway constraints out of Western Canada, but only temporarily. Worse yet, it’s unclear how long it will take to add new takeaway capacity from challenged projects like the Trans Mountain Expansion Project or Keystone XL. In the midst of all this trouble and uncertainty, Enbridge is pursuing a potentially controversial plan to revamp how it allocates space — and charges for service — on its 2.8-MMb/d Mainline system, the primary conduit for heavy and light crudes from Western Canada to U.S. crude hubs and refineries. Today, we begin a series on the company’s push to shift to a system that would allocate most of the space on its multi-pipe Mainline system to shippers that sign long-term contracts.