Energi Panas Bumi yang disebut Geothermal berasal dari kata yunani yang berarti Geo itu Bumi dan Thermal itu Panas. Ethanol, other alcohol fuels (biobutanol) and biogasoline have widespread use an automotive fuel. Most alcohols have less energy per liter than gasoline and are often blended with gasoline. Alcohols are used for a variety of reasons – to increase octane, to improve emissions, and as a substitute for petroleum based mostly gasoline, since they can be made out of agricultural crops. Brazil’s ethanol program gives about 20% of the nation’s automotive gasoline wants, as a result of the mandatory use of E25 blend of gasoline throughout the country, three million vehicles that operate on pure ethanol, and 6 million dual or flexible-fuel autos bought since 2003. that run on any mix of ethanol and gasoline. The business success of “flex” automobiles, as they’re popularly known, have allowed sugarcane primarily based ethanol gas to realize a 50% market share of the gasoline market by April 2008.