The use of coal as a source for primary energy has been on the decline, while the use of natural gas considerably increased. The United States consumes, by far, the largest amount of natural gas worldwide, at around 846.6 billion cubic meters in 2019. Following the Fukushima disaster, nuclear energy consumption experienced a slight slump between 2010 and 2012 but has been on a steady increase since its decline. Consumption of renewable energy has also been experiencing a steady growth worldwide. This is partially due to increased awareness of the sharp increase in global carbon emissions over the years, leading to greater international investment in renewable energy.
The industrial sector is expected to see an increase of energy use from 238.9 quadrillion British thermal units in 2018 to 316.7 quadrillion British thermal units by 2050. The projected energy consumption worldwide for that same year is estimated to reach about 910.7 quadrillion British thermal units.