Ethanol can be used :
- as a transport fuel to replace gasoline
- as a fuel for power generation by thermal combustion
- as a fuel for fuel cells by thermochemical reaction
- as a fuel in cogeneration systems
- as a feedstock in the chemicals industry
The most cost-effective aid is the blending of ethanol with a small proportion of a volatile fuel such as gasoline. Thus, various mixture of bioethanol with gasoline or diesel fuels have been used. The most well-known blends are (by volume):
· E5G to E26G (5-26% ethanol, 95-74% gasoline)
· E85G (85% ethanol, 15% gasoline)
· E15D (15% ethanol, 85% diesel)
· E95D (95% ethanol, 5% water, with ignition improver)