• 22.The forecast Company Use Volumes and associated Facility Carbon Charge cost estimate are subject to change based on actual Facility Volumes.

2.2 VOLUMES SUBJECT TO OBPS

• 23.Transmission of marketable natural gas is a covered activity under the OBPS and includes installations and equipment such as compressor stations, storage installations, and compressor units that have a common owner/operator within a province.19 For Enbridge Gas, this includes fuel used in transmission and storage compressor facilities (“OBPS Volumes”).

• 24.Under the GGPPA, Enbridge Gas is required, on an annual basis, to:

• calculate and report to ECCC Enbridge Gas’s emissions and emissions limit for each compliance period; and

• provide compensation for, or otherwise obtain Credits or Offset Credits to cover, any excess emissions by the applicable deadline.

• 25.OBPS-qualified facilities have a compliance obligation for the portion of their emissions that exceed an annual facility emission limit. Under the OBPS, annual facility emissions limits are calculated based on a specific OBS and annual facility production. The OBS for the transmission of marketable natural gas is 80% of production-weighted national average emissions intensity. The costs associated with OBPS Volumes will be recovered from customers as part of the Facility Carbon Charge, as detailed at Exhibit D, included in delivery or transportation charges on customers’ bills. Enbridge Gas’s forecast 2021 (January 1, 2021 to December 31,

19 The GGPPA, Part 2 (industrial GHG Emissions) and the Output Based Pricing System Regulations SOR/2019-266.