Golden Grain Energy, LLC

Golden Grain Energy, LLC is a privately‑held, member‑owned ethanol producer in Mason City, Iowa that converts locally grown corn into clean‑burning ethanol. The company markets co‑products including dried and wet distillers grains (DDGS) and non‑food grade corn oil. Founded in the early 2000s, GGE operates a large‑scale plant producing around 100+ million gallons annually and serves domestic and international feed and fuel markets.