The rejection of Keystone XL is a setback for North Dakota's oil industry, even though falling oil prices and the drop in Bakken drilling and oil production have lessened the immediate need for it.
"It is a good time to say 'No, we don't want a pipeline' when you really don't need it," said Rudy Hokanson, a Minnesota-based oil analyst for Barrington Research.
TransCanada's proposed 1,200-mile crude oil pipeline from Alberta through Montana and South Dakota to Nebraska would have carried mostly Canadian oil sands crude. The takeaway capacity of a planned Bakken leg was 100,000 barrels per day, just under 10 percent of North Dakota's current production.
But North Dakota officials believe that more Bakken pipelines still will be needed to carry future oil volumes.
"We will be talking to TransCanada and to others to understand how that need can be met," Justin Kringstad, director of the North Dakota Pipeline Authority, said in an interview.
Both Canadian and North Dakota oil producers are hurting because of persistent low crude oil prices. On Friday, North Dakota reported just 64 active drilling rigs, a 71 percent drop from the peak in May 2012. North Dakota's production fell 1.7 percent in August in the latest decline since peaking last December.
Kringstad said Keystone XL was one of four proposed pipelines intended to boost the state's pipeline capacity. Nearly half of that state's crude oil is shipped by rail, much of it on long oil trains that pass through Minnesota cities, including Minneapolis and St. Paul.
Two proposed projects to transport North Dakota oil are under regulatory review — Enbridge Energy's Sandpiper pipeline across North Dakota and Minnesota and Energy Transfer Partners' Dakota Access line via South Dakota and Iowa.