Why do state and federal governments really like ethanol blended fuels?
Because mandating the use of ethanol blended fuel is a disguise for a hike in gasoline taxes.
Adding alcohol to gasoline dilutes the fuel, and lowers the heat energy.
One US gallon of Gasoline (regular unleaded) = 114,100 BTU/gal
One US gallon of Ethanol (E100) = 76,100 BTU/gal [67% of gasoline BTU]
One US gallon of 10% Ethanol/Gasoline Blend (E10) = 111,300 BTU/gal [97% of gasoline BTU]
So adding 10% ethanol to gasoline requires burning 3% more fuel to accomplish the same task.
Ethanol blended gasoline requires buying more gallons of fuel in order to travel the same distance.
Highway fuels are taxed “by the gallon”, so governments collect more taxes with “watered down” alcohol blended fuels.
Interesting thought there on ethanol.
But the Baraqqi Depression has torpedo’d gas taxes by driving consumption to 1997 levels