|
Technologies > Ethanol
Ethanol is a renewable, domestic fuel made from various plant materials, called "biomass”, which can include starchy feed stocks (like corn or sugar cane) or cellulosic feedstocks (like perennial grasses, wood, old newspapers, or even municipal waste). Ethanol is compatible with internal combustion engines, in fact, nearly 70% of U.S. gasoline contains a 10% level of ethanol (“E-10”) to oxygenate the fuel and reduce air pollution. E85 (85% ethanol, 15% gasoline) is becoming increasingly popular and can be used in flex fuel vehicles (FFVs), which are designed to tolerate a high ethanol content as well as gasoline.
There are many benefits to using ethanol, especially E85. Although E85 has about 27% less energy per gallon than gasoline, it is typically priced 10% to 30% less than gasoline, which can offset the loss in fuel economy. Also, E85 is increasing in popularity, and is therefore readily available to the general public. As of 2008, more than 1,600 U.S. fueling stations offered E85 to the more than 7 million FFVs on U.S. roadways. Besides a significant reduction of harmful emissions and greenhouse gases, E85 is a renewable, biodegradable, domestic fuel and could displace up to 10% of American gasoline use without affecting food supplies.
|