Northern Growers LLC manufactures, distributes, and sells ethanol and distillers grains in the United States. The company holds interest in POET Biorefining-Big Stone, an ethanol and distiller grains plant located near Big Stone City, South Dakota. Its products include fuel grade ethanol, which is used as an oxygenated fuel additive, as an octane enhancer in fuels, and as non-petroleum based gas substitute; and distillers grains and energy feed supplements marketed primarily to the dairy, beef, sheep, swine, and poultry industries. The company was formerly known as Northern Growers Cooperative. Northern Growers LLC was founded in 2000 and is based in Big Stone City, South Dakota.