Construction on Summit’s pipeline can’t start until the project moves ahead in North Dakota. It has inspired a debate over risk of a leak and the value of of carbon capture for ethanol as a climate solution.

The Summit Carbon Solutions project would pipe liquid carbon dioxide from ethanol plants in Minnesota, Iowa, Nebraska, South Dakota and North Dakota to sequester it deep underground near Bismarck.

With Minnesota signing off on Ames-based Summit Carbon Solutions' proposed pipeline, it now only needs approval from South Dakota.