The pie chart presents the amount of power generated from various sources in a country between 1985 and 2003.
Overall, the amount of energy made from oils in 1985 and 2003 was the highest, but in the meantime, Hydrogen and other renewable energy sources were used for making the least amount of energy.
In 1985, Power generated from oils was 52 percent, indicate the major source of electricity. In the meantime, nuclear energy contributes 22% to the overall energy production while coal contributes 8% to the energy generation. In the same year, natural gas corporates only 13 percent to this, moreover, renewable energy sources play a least role, i.e, only 1%.
During 2003, the data shows that the oil still contributes the most to the electricity production that is 39 percent. But here, natural gas overcomes the nuclear role for generating enectricity which rose to 23%, leaving atomic energy proportion behind that is 17 percent. However, Coal reaches to 13 percent while hydrogen and renewable energy sources are equally participating, i.e, 4% for each.