The Environmental Protection Agency (EPA) in the United States is carefully considering whether or not to allow higher blends of ethanol to be mixed in with standard petrol. This decision will not specifically mandate that ethanol must be blended with petroleum based fuels, however it would allow for the current limit of a 10% blend to be increased to a 15% blend – effectively giving a 50% demand boost to the currently suffering biofuel market within the US.
The current primary concern of the EPA lies not with the source of the fuel itself but with the actual effects the fuel blends may have on car engines and what the overall environmental impact might be.