Between 1950 and 2000, half of electricity generated came from coal, now it’s just 32%, and the percentage coming from hydro has steadily fallen from 30% in 1950 to 6%. Conversely, natural gas, which was just 10% during the 1980s, is 33% while nuclear power went from 0% in 1970 to 20% by 1990 and has since flatlined. Renewables have steadily risen from 0% thirty 30 years ago to 8%.