A multi-stage, $2.1 billion expansion, the Southern Access Pipeline involved the construction of 454 miles of new 42-inch pipe within the existing Enbridge pipeline easement between Superior, Wis. and Enbridge's Flanagan, Ill. terminal along with new pump stations in Wisconsin and Illinois. The Southern Access Pipeline met the increased demand of Chicago-area refineries with additional supplies of Canadian heavy crude petroleum, supplies of which were increasing from production in Alberta 's oil sands. The final stages of the Southern Access Pipeline became operational in 2009. The pipeline provides an added capacity of 400,000 barrels per day (bpd), which is expandable to 1.2 million bpd with additional pump stations.
The Alberta Clipper Pipeline is an integral part of Enbridge's ongoing efforts to meet North America's needs for reliable and secure energy supplies. Alberta Clipper is a crude oil pipeline that provides service between Hardisty, Alberta, and Superior, Wis. This 36-inch, 1,000-mile pipeline was designed to resolve expected capacity constraints and was completed in 2010. The $1 billion Alberta Clipper Pipeline complements the Southern Access Project to provide Midwestern refineries with crude oil supplies from Western Canada as supplies from this resource continue to increase. Initial capacity is 450,000 bpd, with ultimate capacity of up to 800,000 bpd available.
Enbridge’s Southern Lights Project fills a gap between the available supply of light hydrocarbons (referred to as "diluents") from U.S. refineries and supply centers and an increased demand for diluent by petroleum producers in Alberta’s oil sands and heavy crude oil production regions in Western Canada. Diluents are light hydrocarbons that are used to dilute heavy crude oil and bitumen (a thick form of oil found in the oil sands) to a consistency that is thin enough to be transported by pipeline. Running north from Manhattan, Ill. to Edmonton, Alberta, the $2.2 billion Southern Lights Pipeline was built in segments between 2007 and 2009 alongside the Southern Access and Alberta Clipper Pipelines and within existing Enbridge right-of-way. The 20-inch pipeline provides 180,000 bpd of diluent to Canadian producers.