The Minnesota Commerce Department has endorsed Enbridge Energy's plan to boost the capacity of its Alberta Clipper crude oil pipeline across Minnesota, warning that the state's two oil refineries face shortages if the project doesn't go ahead.
The agency backed the controversial project in written testimony for regulatory hearings that began Tuesday in St. Paul. Enbridge seeks approval of $160 million in new or expanded pumping stations to increase the line's capacity by 40 percent to 800,000 barrels per day.
It is the second expansion of the pipeline, also known as Line 67, which runs 1,000 miles from Hardisty, Alberta, to Superior, Wis., including 285 miles through Minnesota. State regulators last year approved the line's first capacity expansion. The Phase I construction work already is underway.
Demand by U.S. refiners for Canadian oil is growing faster than existing pipelines' capacity, forcing Enbridge into a form of rationing, known as "apportionment,'' that affects new and existing shippers under common-carrier rules, the department said.
"Minnesota's refineries could lose even their existing supplies of crude oil," said Laura Otis, an analyst for the department's energy resources division, in prepared testimony.
Flint Hills Resources' Pine Bend refinery in Rosemount and Northern Tier Energy's refinery in St. Paul Park get North Dakota and Canadian crude oil via jointly owned pipelines from Enbridge's Clearbrook, Minn., terminal.
"Without the Alberta Clipper Phase II upgrade, Pine Bend projects that it will be short crude, which could adversely affect consumers and force the refinery to consider other modes of transport for delivering the crude," Flint Hills spokesman Jake Reint said in an e-mail.
The Commerce Department's favorable view of the upgrade is likely to carry weight with state regulators. But it's a blow to climate activists who oppose this and similar pipelines, like TransCanada's proposed Keystone XL pipeline through Montana, South Dakota and Nebraska. These pipelines carry heavy oil, known as tar sands or oil sands crude, extracted in Alberta.