Energy Transfer Partners plans to double the Dakota Access pipeline's capacity from more than 500,000 barrels per day to as much as 1.1 million barrels, The Bismarck Tribune reported.
The pipeline carries oil from North Dakota through South Dakota and Iowa to a shipping point in Illinois. The expansion will meet growing demand without additional pipelines or rail shipments, the company told North Dakota Public Service Commission in a letter on Wednesday.
Before the pipeline was completed and began moving oil in 2017, it sparked massive protests near the Standing Rock Indian reservation. The company said last year that it was planning to ship more crude to the Gulf Coast.