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The Agency’s 2020 projections remained largely in line with the previous year’s
projections. In the high case, global nuclear electricity generating capacity was
projected to increase by 82% to 715 gigawatts (electrical) (GW(e)) by 2050,
corresponding to 11% of global electricity generation, versus around 10% in
2019. The low case projected a decrease of 7% to 363 GW(e), representing a
6% share of global electricity generation.
At the end of 2020, the world’s total nuclear power capacity was 392.6 GW(e),
generated by 442 operational nuclear power reactors in 32 countries. The
nuclear sector adapted to national guidelines with regard to the coronavirus
disease (COVID-19) pandemic by taking effective measures. At the outset of the
pandemic in early 2020, the Agency established the COVID-19 Nuclear Power
Plant Operating Experience Network to help share information on measures
taken to mitigate the pandemic and its impact on the operation of nuclear power
plants (NPPs). None of the 32 countries with operating nuclear power plants
reported any impact on safe and reliable NPP operation due to the pandemic.
As a clean, reliable, sustainable and modern energy source, nuclear power makes
a significant contribution to reducing greenhouse gas emissions worldwide,
while fulfilling the world’s increasing energy demands and supporting sustainable
development and post COVID-19 pandemic recovery. Nuclear power supplied
2553.2 terawatt-hours of electricity in 2020, accounting for nearly a third of the
world’s low carbon electricity production. It is widely recognized that, to address
the challenges of a clean energy transition, nuclear power will have to play a
significant role.
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