Midwest AgEnergy is a North Dakota biofuels enterprise that owns Blue Flint, a 70 million gallon per year biorefinery in oper ... ation since 2007 near Underwood, ND and Dakota Spirit, a 70 million gallon per year biorefinery near Spiritwood, ND in operation since 2015. Together with our partners, we are building a renewable energy future for the country, increasing value for North Dakota farmers, and bringing prosperity to our communities. read more