Renewable Energy and Resources

14.Emerging Technologies

Besides of renewable energy technologies like solar, bioenergy, wind and hydro energy technologies other technologies are still under development, and include cellulosic ethanol, hot-dry-rock geothermal power, and marine energy. These technologies are not yet widely established, these technologies have limited commercialization. In cellulosic ethanol process  ethanol (ethyl alcohol)is produced from the cellulose (the stringy fiber of a plant) rather than from the plant's  seed or plant fruits and also It is a biofuel produced from grasses, wood, algae, or other plants. The fibrous parts of the plants are mostly inedible to animals, including humans, except for ruminants (grazing, cud-chewing animals such as cows or sheep). An enhanced geothermal system (EGS) generates geothermal electricity without the need of natural convective hydro sources or thermal sources. For economical view and for more renewable resources, geothermal power systems have demoralized only resources where naturally occurring energies like heat, water, and rock permeability are sufficient to allow energy extraction. However,by future most of the geothermal energy within reach of conventional techniques in dry and impermeable rock. Enhanced geothermal system technologies enhance or create geothermal resources in this hot dry rock (HDR) through hydraulic stimulation.