Fig. 2
Source: CER, Pipeline Throughput and Available Capacity Data, Commodity Tracking System’s aggregated Canadian Crude Oil Exports by Rail – Monthly Data (accessed on 25 Aug 2025), Commodity Tracking System’s confidential volumes as reported by exporters on Express, Aurora, and Milk River, aggregated in this figure to preserve confidentiality
Text Alternative: This combined stacked area and line chart displays the combined pipeline throughputs and capacities of the Enbridge Mainline, Keystone, Trans Mountain, as well as Express, Aurora, and Milk River pipeline systems from January 2018 to June 2025. The capacity displayed for Enbridge Mainline, Keystone, and Trans Mountain is the available capacity, as filed under Guide BB reporting. The capacity displayed for Express, Aurora, and Milk River is the nameplate capacity. Rail exports are also included to create a full picture of the total volume of crude oil and RPPs transported relative to available pipeline capacity.
In December 2023, total throughput (including rail exports) reached a high of 4.7 million barrels per day (MMb/d). Capacity increased with the completion of the Trans Mountain Expansion Project in May 2024, and since then a record high was set for total throughputs of 5.0 MMb/d in January 2025. The most recent data point available, June 2025, shows 4.6 MMb/d of total throughputs and 5.2 MMb/d of total pipeline capacity.
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