National Energy Board

Over the past five years, market circumstances and tolling on the TransCanada Mainline Pipeline System (Mainline) have evolved significantly. In the RH-003-2011 proceeding, the National Energy Board (Board or NEB) addressed toll increases and the eroding competitiveness of the Mainline and TransCanada PipeLines Limited (TransCanada) was granted tools to better manage its system and respond to changes. In the period following the RH-003-2011 proceeding, extensive litigation and a need for capital investment resulted in the 2013-2030 Settlement Agreement (Settlement) and the RH-001-2014 Reasons for Decision, which further restructured the Mainline and included an update to Mainline tolls for the 2018 to 2020 period. On the horizon is the upcoming segmentation of the Mainline post-2020, which will involve its own challenges as stakeholders confront a comprehensive change to toll design. Further developments on the Mainline may also materialize as TransCanada continues to innovate and respond to new challenges and opportunities. These unique circumstances place shippers in a dynamic environment that requires careful consideration from the regulator.