This system is a hybrid, which uses multiple processes starting with a high efficiency reverse osmosis (hero) followed by evaporation and crystallization. ... The benefit to using hydroelectric power is that the water resource is not consumed once the energy is collected, as is the case with other sources of energy such as coal and oil. ... Another difficulty with wide span use of hydroelectric power is that it takes strong flowing water that is not geographically available everywhere where electricity is needed. ... In July 2013, TVA purchased 1,515 megawatts of energy from eight wind far...

• Word Count: 2430
• Approx Pages: 10
• Grade Level: Undergraduate