In 2016, the world's electricity consumption amounted to approximately 21.8 trillion kilowatt hours. One quadrillion watts is approximately equal to one petawatt.
Global consumption of electricity has increased over the last decades from 7,323 terawatt hours in 1980 to 21.8 terawatt hours In 2016 In a similar pattern.
Power consumption in China has quickly risen, reaching 6,840 terawatt hours in 2018
China is the highest consumer of electricity in the world with the United States following close behind, consuming 4,148 terawatt hours in 2016.
REFERENCES
Bilgen, S. (2014). Structure and environmental impact of global energy consumption. Renewable and Sustainable Energy Reviews. https://doi.org/10.1016/j.rser.2014.07.004
Santamouris, M., Cartalis, C., Synnefa, A., & Kolokotsa, D. (2015). On the impact of urban heat island and global warming on the power demand and electricity consumption of buildings - A review. Energy and Buildings. https://doi.org/10.1016/j.enbuild.2014.09.052