The graph, drawn in 2008, provides a breakdown of how much energy was consumed in the USA in the year 1980 with the predictions about 50 years later.
Overall, the figure for the amount of fossil fuels consumption registers an increase, while renewable energy sources make of negligible part of overall energy sources utilized by people.
Fossil fuels, namely coal, natural gas, petrol, and oil experienced an upward trend beginning from the 1980s. With certain fluctuations, the petrol and oil consumption began at 35 quadrillion units reaching at 40 quadrillion units in the year 2005. By 2030, it is anticipated that reliance on petrol and oil will be too much, precisely, over 45 quadrillion units. Coal also followed a similar trend until 2005 with high volatility. Coal usage is set to witness above 25 quadrillion units in the following years. Natural gas, on the other hand, is the type of energy which experienced the highest fluctuations until it leveled off beginning from 2015, and it is projected to remain stable until 2030.
Turning to renewable energy sources, all of them followed the same pattern at a small unit until 1990. Later, nuclear consumption gradually increased while solar and wind energy usage registered less amount. Finally, the U.S. saw a stable trend in the consumption of hydropower as of 2010, after certain fluctuations.