The line graph compares how much electricity was produced from coal, natural gas, and petroleum in New York between 1980 and 2000.
Overall, electricity from petroleum showed the most growth over the period, while coal production dropped. Natural gas also rose sharply and became the second biggest source by 2000.
In 1980, petroleum produced around 400 million kilowatt-hours of electricity, which was the highest among the three. Coal came next with about 200 million, and natural gas was the lowest at around 100 million. Over the next five years, petroleum production increased quickly and reached about 600 million in 1985, while coal rose slightly and natural gas stayed low.
After 1985, electricity from coal started to fall and continued to decline until it reached just under 200 million in 2000. In contrast, natural gas grew strongly after 1990, overtaking coal and reaching around 500 million by 2000. Petroleum, although it fell a little around 1990, then rose sharply and became the main source again, peaking at around 700 million kilowatt-hours in 2000.