Born in 2009 from a group of farmer-owned ethanol cooperatives, Guardian Energy turns locally grown Midwest corn into renewable fuel and useful animal-feed co-products. The company operates three production plants in Janesville and Lima, plus Hankinson, under a management team based in Prior Lake, and processes about 50 million bushels of corn each year. Its dry-mill operation also recovers corn oil and produces low-carbon-intensity ethanol from corn fiber.