ProjectOilGoes south
Enbridge Mainline Optimization Phase 1
Enbridge expansion adding 150,000 barrels a day of Mainline capacity from western Canada to the US border, plus 100,000 barrels a day on the Flanagan South pipeline inside the US, to carry Canadian heavy oil to Midwest and Gulf Coast refiners. Enbridge took the final investment decision on November 14, 2025; the cost is about US$1.4 billion and the capacity is expected in 2027. A second phase of 250,000 barrels a day was postponed in July 2026.
- Status
- Final investment decision
- Direction
- South: Carries Canadian output to the United States.
- Capacity
- 150 kb/d
- Where
- Alberta
- Investment decision
- 14 November 2025
- In service
- 2027
- Needs new laws?
- No: can proceed under existing rules