According to an article in InForum:

The facility, which has been estimated to cost between $1 billion and $1.5 billion, could supply fertilizer for up to 12 percent of corn and wheat acreage in North Dakota, South Dakota and Minnesota, Tom Lilja, president of the North Dakota Corn Growers Association said last summer, when the group initially announced plans to build a plant somewhere in North Dakota.

The plant will address two problems, according to the corn growers: It would use the natural gas that now is largely flared off – or wasted – in western North Dakota, while providing farmers in the region with a guaranteed supply of fertilizer without relying on imports.

Construction is planned to begin in 2015 and be completed in 2017.  FG

—From article by Kevin Bonham in InForum