Petrol and oil are the dominant fuel sources throught this period, with 35 quadrillion (35q) units used in 1980, rising to 42q in 2012. Despite some initial fluctation, from 1995 there was a steady increase. This is expected to continue, reaching 47q in 2012.
Consumption of energy derived from natural gas and coal is similar over the period. From 20q and 15q respectively in 1980, gas showed an initial fall and coal a gradual increase, with the two fuel equal between 1985 and 1990. Consumption has fluctuated since 1990 but both now provide 2q. Coal is predicted to increase steadily to 31q in 2030, whereas after 2014, gas will remain stable at 25q.
In 1980, energy from nuclear, hydro and solar/wind power was equal at only 4q. Nuclear has risen nby 3q, and solar/wind by 2. After slight increase, hydropower has fallen back to the 1980 figure. It is expected to maintain this level until 2030, while the others should rise slightly after 2025.
Overall, the US will continue to rely on fossil fuels with sustainable and nuclear energy sources remaining relayively insignificant.
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