Aemetis, Inc. operates as a renewable natural gas and renewable fuels company. The company operates through California Ethanol, California Dairy Renewable Natural Gas, and India Biodiesel segments. It engages in the operation, acquisition, development, and commercialization of low and negative carbon intensity products and technologies that replace fossil fuel products. The company also produces and sells ethanol; wet distillers grains, distillers corn oil, and condensed distillers solubles to dairies and feedlots as animal feed; and distilled biodiesel and refined glycerin products. In addition, it produces biogas from dairy waste. Aemetis, Inc. is headquartered in Cupertino, California.