All together fossil fuels accounted for about 11.2 percent growth of production however, the production of renewable energies has a growth of about 87.6 percent (Science Stats, 2009). This is a huge difference in growth potential between the two. After all, there are many sources of renewable energies that can be found around the Earth’s biosphere.
The advantage of having generating electricity from dams is that they are not expensive thus, making it more appealing for consumers They can supply a lot of people with the generated electricity.
Hydroelectric power is also very efficient and inexpensive. “Modern hydro turbines can convert as much as 90% of the available energy into electricity. The best fossil fuel plants are only about 50% efficient. Hydropower is produced for an average of 0.7 cents per kilowatt-hour (kWh). This is about one-third the cost of using fossil fuel or nuclear and one-sixth the cost of using natural gas,” as long as the costs for removing the dam and the silt it traps are not included. Efficiency could be further increased by refurbishing hydroelectric equipment. An improvement of only 1% would supply electricity to an additional 300,000 households.