On August 29, 2016, the Energy Regulatory Commission of Mexico (CRE) published fuel regulation NOM-016-CRE-2016 in the Mexican Federal Register. This fuel standard allows for the blending and sale of up to 5.8 percent ethanol in the nation's fuel supply outside of Mexico City, Guadalajara, and Monterrey. These new regulations will go into effect 60 days after publication of the bill, marking the first ethanol mandate to impact rural areas of Mexico. Guadalajara currently has a 2 percent ethanol blend mandate that is eventually expected to expand to Mexico City and Monterrey.