Enbridge Announces $1.4 B Mainline Optimization Phase 1 Expansion Amid Q3 Earnings Miss

ENB
November 14, 2025

Enbridge disclosed a final investment decision for its Mainline Optimization Phase 1 (MLO1) project, a $1.4 billion expansion that will add 150,000 barrels per day to the Mainline system and 100,000 barrels per day to the Flanagan South Pipeline. The additional capacity is slated to become available in 2027 and is underpinned by long‑term take‑or‑pay contracts that provide predictable revenue streams.

In its most recent quarterly report, Enbridge reported adjusted earnings per share of $0.46, falling short of the consensus estimate of $0.53, and revenue of $10.633 billion, below the $10.860 billion forecast. Adjusted EBITDA rose to $4.3 billion from $4.2 billion in the same quarter a year earlier, but the earnings miss was driven by higher financing costs and depreciation, as well as lower contributions from the Flanagan South and Spearhead pipelines.

The Liquids Pipelines segment, which includes the Mainline and Flanagan South lines, saw a decline in adjusted EBITDA due to weaker performance in the Flanagan South and Spearhead segments. However, other segments offset this weakness, allowing overall adjusted EBITDA to grow modestly. The mix shift toward higher‑margin assets helped maintain profitability despite the headwinds in the core liquids network.

CEO Greg Ebel emphasized that Enbridge remains well‑positioned to support Canadian oil production and U.S. refining demand, citing the company’s extensive footprint and the strategic value of the MLO1 expansion. Executive Vice President Colin Gruending highlighted that the project will deliver capital‑efficient, timely egress capacity from Canada, reinforcing the company’s role as a key energy infrastructure provider.

Shares of Enbridge fell 2.54 % on the day of the earnings release, a decline largely attributed to the adjusted EPS and revenue misses. Investors focused on the short‑term financial performance rather than the long‑term benefits of the MLO1 project, underscoring the market’s sensitivity to quarterly results.

The MLO1 expansion leverages existing infrastructure, reducing capital intensity and accelerating deployment. While the project signals Enbridge’s commitment to long‑term growth in the Canadian liquids market, the Q3 earnings miss highlights ongoing headwinds such as financing costs and segment‑specific performance. Management has maintained its full‑year guidance, indicating confidence in the company’s ability to navigate short‑term challenges while pursuing strategic expansion.

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