What Electricity Sources Power the World?
By Chris Dickert
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Graphics/Design:
Sam Parker
In 2022, 29,165.2 terawatt hours (TWh) of electricity was generated around the world, an increase of 2.3% from the previous year.
In this visualization, we look at data from the latest Statistical Review of World Energy, and ask what powered the world in 2022.
Coal is Still King
Coal still leads the charge when it comes to electricity, representing 35.4% of global power generation in 2022, followed by natural gas at 22.7%, and hydroelectric at 14.9%.
Over three-quarters of the world’s total coal-generated electricity is consumed in just three countries. China is the top user of coal, making up 53.3% of global coal demand, followed by India at 13.6%, and the U.S. at 8.9%.
Burning coal—for electricity, as well as metallurgy and cement production—is the world’s single largest source of CO2 emissions. Nevertheless, its use in electricity generation has actually grown 91.2% since 1997, the year when the first global climate agreement was signed in Kyoto, Japan.
Renewables on the Rise
However, even as non-renewables enjoy their time in the sun, their days could be numbered.
In 2022, renewables, such as wind, solar, and geothermal, represented 14.4% of total electricity generation with an extraordinary annual growth rate of 14.7%, driven by big gains in solar and wind. Non-renewables, by contrast, only managed an anemic 0.4%.
The authors of the Statistical Review do not include hydroelectric in their renewable calculations, even though many others, including the International Energy Agency, consider it a “well-established renewable power technology.”
With hydroelectric moved into the renewable column, together they accounted for over 29.3% of all electricity generated in 2022, with an annual growth rate of 7.4%.
France’s Nuclear Horrible Year
Another big mover in this year’s report was nuclear energy.
In addition to disruptions at the Zaporizhzhia nuclear power plant in Ukraine, shutdowns in France’s nuclear fleet to address corrosion found in the safety injection systems of four reactors led to a 4% drop in global use, year-over-year.
The amount of electricity generated by nuclear energy in that country dropped 22% to 294.7 TWh in 2022. As a result, France went from being the world’s biggest exporter of electricity, to a net importer.
Powering the Future
Turning mechanical energy into electrical energy is a relatively straightforward process. Modern power plants are engineering marvels, to be sure, but they still work on the same principle as the very first generator invented by Michael Faraday in 1831.
But how you get the mechanical energy is where things get complicated: coal powered the first industrial revolution, but heated the planet in the process; wind is free and clean, but is unreliable; and nuclear fission reliably generates emission-free electricity, but also creates radioactive waste.
With temperature records being set around the world in the summer, resolving these tensions isn’t just academic and next year’s report could be a crucial test of the world’s commitment to a clean energy future.
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