Summit Agricultural Group’s infrastructure in Brazil —claims it produces the “lowest cost, most sustainable gallon of ethanol in the world” —
So curious as of why Rastetters no longer own a single plant in the U.S but he is still interested in a utility model charging 6-7cpg variable costs to the U.S ethanol plants.*  

16-17C per corn bushels. 
Summit looks like an utility charging a toll fee like a RR supplying wagons and locomotives times 1050KB a day.
Carbon is a cost-center. I regret but Summit has a service that doesn't increase value or create anything..

Unlike Summit, Farming is not an utility business and I have a strong feeling that the same corn bushels do not gain in value in this type of game.  U.S Corn-based ethanol is 52 g of C02 equivalent.(GREET model) while sugar cane ethanol produce in Brazil for use in the U.S. is 35.2 g of CO2 equivalent.

Conflicting interests.

Summit is a private equity,  receives the backing from institutional investors (and likely foreign ones) represented by big lawyers.
Without knowing who is investing it is hard to identify who profits in what part exactly.  ***requesting more information***

*take a $2.5/boe/ 42. (a)
**(a) times 2.83 corn bu per ethanol cpg.