The pie charts compare the percentage of electric energy production in America from 1970 to 1980 as a major source.
Overall, it is clear that coal provided half of the energy in both years, while nuclear energy only produced a small portion but increased after 10 years. In contrast, natural gas ranked second and hydro energy ranked third in generating power.
Both years (1970 and 1980) recorded the highest percentage of energy production from coal: 47% and 51% respectively. Electricity from natural energy accounted for 24% and 15% between 1970 and 1980, where American got most of the energy from after coal. Furthermore, electric energy from hydro power (water) was decreased by 4 percentage points to, 12%.
On the contrary, America got only 1% of its electricity from nuclear power in 1970. As years went by, in 1980, they were able to extract 11% of power from nuclear energy. With the small difference portion, electricity from oil accounted for 12 to 11 percent during 1970 to 1980.
