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# Nuclear energy

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This field describes nuclear energy used for production of electricity. The information covers all countries with operational nuclear reactors used to produce electricity; the information does not include research reactors. Subfields include the current *number of operational nuclear reactors*, the *number of* *nuclear reactors under construction*, the *net capacity of operational nuclear reactors* expressed in gigawatts (GW), the *percent of total electricity production* from nuclear energy, the *percent of total energy produced* from nuclear energy, and the *number of nuclear reactors permanently shut down*. Watts are a measure of power, describing the rate at which electricity is being used at a specific moment. A gigawatt is 1 billion watts.

### Argentina

**Number of operational nuclear reactors:**3 (2023)

**Number of nuclear reactors under construction:**1

**Net capacity of operational nuclear reactors:**1.64GW (2023)

**Percent of total electricity production:**7.2% (2021)

**Percent of total energy produced:**3.6% (2021)

**Number of nuclear reactors permanently shut down:**0

### Armenia

**Number of operational nuclear reactors:**1 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**0.42GW (2023)

**Percent of total electricity production:**25.3% (2021)

**Percent of total energy produced:**52.3% (2021)

**Number of nuclear reactors permanently shut down:**0

### Bangladesh

**Number of operational nuclear reactors:**0

**Number of nuclear reactors under construction:**2 (2023)

**Net capacity of operational nuclear reactors:**0GW

**Percent of total electricity production:**0%

**Percent of total energy produced:**0%

**Number of nuclear reactors permanently shut down:**0

### Belarus

**Number of operational nuclear reactors:**2 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**2.22GW (2023)

**Percent of total electricity production:**14.1% (2021)

**Percent of total energy produced:**40.8% (2021)

**Number of nuclear reactors permanently shut down:**0

### Belgium

**Number of operational nuclear reactors:**5 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**3.93GW (2023)

**Percent of total electricity production:**50.8% (2021)

**Percent of total energy produced:**71% (2021)

**Number of nuclear reactors permanently shut down:**2

### Brazil

**Number of operational nuclear reactors:**2 (2023)

**Number of nuclear reactors under construction:**1

**Net capacity of operational nuclear reactors:**1.88GW (2023)

**Percent of total electricity production:**2.5% (2021)

**Percent of total energy produced:**1% (2021)

**Number of nuclear reactors permanently shut down:**0

### Bulgaria

**Number of operational nuclear reactors:**2 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**2.01GW (2023)

**Percent of total electricity production:**34.6% (2021)

**Percent of total energy produced:**40% (2021)

**Number of nuclear reactors permanently shut down:**2

### Canada

**Number of operational nuclear reactors:**19 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**13.62GW (2023)

**Percent of total electricity production:**15% (2021)

**Percent of total energy produced:**4% (2021)

**Number of nuclear reactors permanently shut down:**2

### China

**Number of operational nuclear reactors:**55 (2023)

**Number of nuclear reactors under construction:**21

**Net capacity of operational nuclear reactors:**53.18GW (2021)

**Percent of total electricity production:**5.02% (2021)

**Percent of total energy produced:**3% (2021)

**Number of nuclear reactors permanently shut down:**0

### Czechia

**Number of operational nuclear reactors:**6 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**3.93GW (2023)

**Percent of total electricity production:**36.7% (2021)

**Percent of total energy produced:**38.3% (2021)

**Number of nuclear reactors permanently shut down:**0

### Egypt

**Number of operational nuclear reactors:**0

**Number of nuclear reactors under construction:**3 (2023)

**Net capacity of operational nuclear reactors:**0GW

**Percent of total electricity production:**0%

**Percent of total energy produced:**0%

**Number of nuclear reactors permanently shut down:**0

### Finland

**Number of operational nuclear reactors:**5 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**4.39GW (2023)

**Percent of total electricity production:**32.8% (2021)

**Percent of total energy produced:**41.3% (2021)

**Number of nuclear reactors permanently shut down:**0

### France

**Number of operational nuclear reactors:**56 (2023)

**Number of nuclear reactors under construction:**1

**Net capacity of operational nuclear reactors:**61.37GW (2021)

**Percent of total electricity production:**70% (2021)

**Percent of total energy produced:**77% (2021)

**Number of nuclear reactors permanently shut down:**6

### Germany

**Number of operational nuclear reactors:**0

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**0GW

**Percent of total electricity production:**0%

**Percent of total energy produced:**0%

**Number of nuclear reactors permanently shut down:**33

### Hungary

**Number of operational nuclear reactors:**4 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**1.92GW (2023)

**Percent of total electricity production:**46.8% (2021)

**Percent of total energy produced:**44% (2021)

**Number of nuclear reactors permanently shut down:**0

### India

**Number of operational nuclear reactors:**19 (2023)

**Number of nuclear reactors under construction:**8

**Net capacity of operational nuclear reactors:**6.29GW (2023)

**Percent of total electricity production:**3% (2021)

**Percent of total energy produced:**2.7% (2021)

**Number of nuclear reactors permanently shut down:**0

### Iran

**Number of operational nuclear reactors:**1 (2023)

**Number of nuclear reactors under construction:**1

**Net capacity of operational nuclear reactors:**0.92GW (2023)

**Percent of total electricity production:**0.1% (2021)

**Percent of total energy produced:**0.19% (2021)

**Number of nuclear reactors permanently shut down:**0

### Italy

**Number of operational nuclear reactors:**0

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**0GW

**Percent of total electricity production:**0%

**Percent of total energy produced:**0%

**Number of nuclear reactors permanently shut down:**4

### Japan

**Number of operational nuclear reactors:**10 (2023)

**Number of nuclear reactors under construction:**2

**Net capacity of operational nuclear reactors:**9.49GW (2023)

**Percent of total electricity production:**7% (2018)

**Percent of total energy produced:**24% (2021)

**Number of nuclear reactors permanently shut down:**17

### Kazakhstan

**Number of operational nuclear reactors:**0

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**0GW

**Percent of total electricity production:**0%

**Percent of total energy produced:**0%

**Number of nuclear reactors permanently shut down:**1

### Korea, South

**Number of operational nuclear reactors:**25 (2023)

**Number of nuclear reactors under construction:**3

**Net capacity of operational nuclear reactors:**24.49GW (2021)

**Percent of total electricity production:**27.4% (2021)

**Percent of total energy produced:**76.5% (2021)

**Number of nuclear reactors permanently shut down:**2

### Lithuania

**Number of operational nuclear reactors:**0

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**0GW

**Percent of total electricity production:**0%

**Percent of total energy produced:**0%

**Number of nuclear reactors permanently shut down:**2

### Mexico

**Number of operational nuclear reactors:**2 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**1.55GW (2023)

**Percent of total electricity production:**5.3% (2021)

**Percent of total energy produced:**1.9% (2021)

**Number of nuclear reactors permanently shut down:**0

### Netherlands

**Number of operational nuclear reactors:**1 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**0.48GW (2023)

**Percent of total electricity production:**3.1% (2021)

**Percent of total energy produced:**3% (2021)

**Number of nuclear reactors permanently shut down:**0

### Pakistan

**Number of operational nuclear reactors:**6 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**3.26GW (2023)

**Percent of total electricity production:**10.6% (2021)

**Percent of total energy produced:**8.7% (2021)

**Number of nuclear reactors permanently shut down:**0

### Romania

**Number of operational nuclear reactors:**2 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**1.3GW (2023)

**Percent of total electricity production:**18.5% (2021)

**Percent of total energy produced:**12.9% (2021)

**Number of nuclear reactors permanently shut down:**0

### Russia

**Number of operational nuclear reactors:**37 (2023)

**Number of nuclear reactors under construction:**3

**Net capacity of operational nuclear reactors:**27.73GW (2021)

**Percent of total electricity production:**20.7% (2021)

**Percent of total energy produced:**3.6% (2021)

**Number of nuclear reactors permanently shut down:**4

### Slovakia

**Number of operational nuclear reactors:**5 (2023)

**Number of nuclear reactors under construction:**1

**Net capacity of operational nuclear reactors:**2.31GW (2023)

**Percent of total electricity production:**52.3% (2021)

**Percent of total energy produced:**70.4% (2021)

**Number of nuclear reactors permanently shut down:**1

### Slovenia

**Number of operational nuclear reactors:**1 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**0.69GW (2023)

**Percent of total electricity production:**36.9% (2021)

**Percent of total energy produced:**40.6% (2021)

**Number of nuclear reactors permanently shut down:**0

### South Africa

**Number of operational nuclear reactors:**2 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**1.85GW (2023)

**Percent of total electricity production:**6% (2021)

**Percent of total energy produced:**2.3% (2021)

**Number of nuclear reactors permanently shut down:**0

### Spain

**Number of operational nuclear reactors:**7 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**7.12GW (2023)

**Percent of total electricity production:**21.38% (2016)

**Percent of total energy produced:**33.2% (2021)

**Number of nuclear reactors permanently shut down:**1

### Sweden

**Number of operational nuclear reactors:**6 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**6.94GW (2023)

**Percent of total electricity production:**30.8% (2021)

**Percent of total energy produced:**34% (2021)

**Number of nuclear reactors permanently shut down:**4

### Switzerland

**Number of operational nuclear reactors:**4 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**2.97GW (2023)

**Percent of total electricity production:**28.8% (2021)

**Percent of total energy produced:**34.2% (2021)

**Number of nuclear reactors permanently shut down:**1

### Taiwan

**Number of operational nuclear reactors:**2 (2023)

**Number of nuclear reactors under construction:**0

**Net capacity of operational nuclear reactors:**1.87GW (2023)

**Percent of total electricity production:**11% (2021)

**Percent of total energy produced:**63.9% (2021)

**Number of nuclear reactors permanently shut down:**2

### Turkey (Turkiye)

**Number of operational nuclear reactors:**0

**Number of nuclear reactors under construction:**4 (2023)

**Net capacity of operational nuclear reactors:**0GW

**Percent of total electricity production:**0%

**Percent of total energy produced:**0%

**Number of nuclear reactors permanently shut down:**0

### Ukraine

**Number of operational nuclear reactors:**15 (2023)

**Number of nuclear reactors under construction:**2

**Net capacity of operational nuclear reactors:**13.11GW (2023)

**Percent of total electricity production:**53.9% (2019)

**Percent of total energy produced:**37% (2021)

**note**- This information does not take into account the effects from the current conflict in Ukraine and should be considered the prewar status

### United Arab Emirates

**Number of operational nuclear reactors:**3 (2023)

**Number of nuclear reactors under construction:**1

**Net capacity of operational nuclear reactors:**4.01GW (2023)

**Percent of total electricity production:**1.3% (2021)

**Percent of total energy produced:**0.17% (2021)

**Number of nuclear reactors permanently shut down:**0

### United Kingdom

**Number of operational nuclear reactors:**9 (2023)

**Number of nuclear reactors under construction:**2

**Net capacity of operational nuclear reactors:**5.88GW (2023)

**Percent of total electricity production:**14.8% (2021)

**Percent of total energy produced:**8% (2021)

**Number of nuclear reactors permanently shut down:**8

### United States

**Number of operational nuclear reactors:**93 (2023)

**Number of nuclear reactors under construction:**1

**Net capacity of operational nuclear reactors:**95.83GW (2021)

**Percent of total electricity production:**20% (2021)

**Percent of total energy produced:**8.2% (2021)

**Number of nuclear reactors permanently shut down:**20

**note:**The US has the World's largest nuclear energy program with 26% of the World's net capacity of nuclear reactors

### World

**Number of operational nuclear reactors:**410 (2023)

**Number of nuclear reactors under construction:**57

**Net capacity of operational nuclear reactors:**368.61GW (2023)

**Percent of total electricity production:**10% (2021)

**Percent of total energy produced:**4.6% (2021)

**note:**Three countries, the US, France, and China, have 57% of the World's net capacity of operational nuclear reactors