Energy

Key Facts

—The rule. From 21 August, all Guatemalan filling stations must sell E10, a blend of 90% gasoline and 10% ethanol.

—The delay. The public launch slipped from 30 June to 21 August to give stations time to prepare.

—The scale. Around 2,200 stations are affected, and the country needs roughly 100 million gallons of ethanol a year.