In 2015, 14.77 million gallons of E85 were sold in California, with Propel selling 9.3 million of those gallons, or 63% of the market, according to California Air Resources Board data. Previously, ethanol production leaders Minnesota and Iowa led the nation; according to revenue records these states sold 13.1 million gallons each in 2015.

Propel’s study is a comprehensive survey of the state’s low carbon fuel customers and was conducted at the pump while customers filled up. More than 970 surveys were completed at 11 Propel locations in the San Francisco Bay Area, Sacramento, Los Angeles, Fresno, Inland Empire and San Diego.