---
title: "NuclearReactor"
language: "en"
type: "Entity"
summary: "Notable active and decommissioned nuclear reactors around the world."
canonical_url: "https://reference.wolfram.com/language/ref/entity/NuclearReactor.html"
source: "Wolfram Language Documentation"
related_guides: 
  - 
    title: "Entity Types"
    link: "https://reference.wolfram.com/language/guide/EntityTypes.en.md"
---
# NuclearReactor

Notable active and decommissioned nuclear reactors around the world.		[Related Interpreter](https://reference.wolfram.com/language/ref/interpreter/NuclearReactor.en.md)

Entity["NuclearReactor", name] or Entity[...] represents an entity of type "NuclearReactor".

Entity[...][prop] gives the value of a specified property.

Entity[...][{propi, …}] gives the value of a list of properties.

Entity[...][prop, {quali -> vali, …}] gives the value of a specified property modified by qualifier rules quali -> vali.

Entity[...][Dated[prop, date]] gives the value of a property associated with a particular date specification.

EntityClass["NuclearReactor", {propi -> speci, …}] represents a class of entities with values of propi defined by speci.

## Sample Entities

* Entity["NuclearReactor", "AvrJuelichAvr"]Entity["NuclearReactor", "Bruce2"]Entity["NuclearReactor", "Chapelcross4"]Entity["NuclearReactor", "Chernobyl2"]Entity["NuclearReactor", "Hamaoka5"]Entity["NuclearReactor", "Leningrad4"]Entity["NuclearReactor", "Monju"]Entity["NuclearReactor", "Phenix"]Entity["NuclearReactor", "StAlban1"]Entity["NuclearReactor", "Trojan"]**…**

## Sample Entity Classes

* EntityClass["NuclearReactor", "UnderConstruction"]EntityClass["NuclearReactor", "PermanentShutdown"]EntityClass["NuclearReactor", "Operational"]EntityClass["NuclearReactor", "ThreeMileIsland"]EntityClass["NuclearReactor", "Chernobyl"]EntityClass["NuclearReactor", "FukushimaDaiichi"]EntityClass["NuclearReactor", "DonaldCook"]EntityClass["NuclearReactor", "Olkiluoto"]EntityClass["NuclearReactor", "Bruce"]EntityClass["NuclearReactor", "Qinshan"]**…**

## Properties

|                                    |                                      |
| ---------------------------------- | ------------------------------------ |
| AdministrativeDivisions            | administrative divisions             |
| AnnualEnergyAvailabilityFactor     | annual energy availability factor    |
| AnnualEnergyProduction             | annual energy production             |
| CapacityAnnual                     | annual net capacity                  |
| Cities                             | city                                 |
| CommercialOperationStartDate       | first commercial operation           |
| ConnectedToGridDate                | connection to grid                   |
| ConstructionStartDate              | construction started                 |
| Coordinates                        | coordinates                          |
| Countries                          | country                              |
| CumulativeEnergyProduced           | cumulative energy produced           |
| CumulativeEnergyUnavailableFactor  | cumulative energy unavailable factor |
| CumulativeOperatingFactor          | cumulative operating factor          |
| EnergyAvailabilityFactorCumulative | lifetime energy availability factor  |
| EntityClasses                      | entity classes                       |
| EntityTypeList                     | entity type list                     |
| FirstCriticalityDate               | first criticality                    |
| GrossCapacity                      | gross capacity                       |
| Image                              | image                                |
| Latitude                           | latitude                             |
| LoadFactorAnnual                   | annual load factor                   |
| LoadFactorCumulative               | lifetime load factor                 |
| Longitude                          | longitude                            |
| LongTermShutdownDate               | long term shutdown                   |
| Name                               | name                                 |
| NetCapacity                        | net capacity                         |
| NuclearReactorSite                 | nuclear reactor site                 |
| OperationalFactorAnnual            | annual operational factor            |
| OperationalFactorCumulative        | lifetime operational factor          |
| Operator                           | operator                             |
| Owner                              | owner                                |
| PermanentShutdownDate              | permanent shutdown                   |
| Position                           | position                             |
| Status                             | status                               |
| TimeOnLineAnnual                   | annual time on line                  |
| TimeOnLineCumulative               | lifetime time on line                |
| Type                               | reactor type                         |

## Details

* ``"NuclearReactor"`` entities include devices that instantiate nuclear chain reactions, often for the purpose of generating electricity.

* ``"NuclearReactor"`` entity classes include power plants as well as collections of reactors grouped by operational status.

* Some properties are available for the ``"NuclearReactor"`` entity type as a whole and can be given using the form ``EntityValue["NuclearReactor", property]``. Such properties include:

|                               |                                                                    |
| ----------------------------- | ------------------------------------------------------------------ |
| "Properties"                  | the list of available properties                                   |
| "PropertyCanonicalNames"      | the standard names of available properties                         |
| "SampleEntities"              | a sample list of available entities (typically of length 10)       |
| "SampleEntityClasses"         | a sample list of available entity classes (typically of length 10) |
| "EntityCount"                 | number of entities available                                       |
| "Entities"                    | the list of available entities                                     |
| "EntityCanonicalNames"        | the standard names of available entities                           |
| "EntityClasses"               | the list of available entity classes                               |
| "EntityClassCanonicalNames"   | the standard names of available entity classes                     |
| "PropertyClasses"             | the list of available property classes                             |
| "PropertyClassCanonicalNames" | the standard names of available property classes                   |
| "PropertyCount"               | number of properties available                                     |

* The following annotations can be used in the third argument of ``EntityValue["NuclearReactor", property, annotation]`` :

|     |     |
| --- | --- |
| "Source" | source information for the property |
| "Date" | the date associated with the entity-property value (if any) |
| "EntityAssociation" | an association of entities and entity-property values |
| "PropertyAssociation" | an association of properties and entity-property values |
| "EntityPropertyAssociation" | an association in which the specified entities are keys, and values are a nested association of properties and entity-property values |
| "PropertyEntityAssociation" | an association in which the specified properties are keys, and values are a nested association of entities and entity-property values |
| "Dataset" | a dataset in which the specified entities are keys, and values are an association of property names and entity-property values |

* The following annotations can be used in the second argument of ``EntityValue[property, annotation]`` :

|                          |                                                                 |
| ------------------------ | --------------------------------------------------------------- |
| "Qualifiers"             | the list of possible qualifiers for the property                |
| "QualifierValues"        | the list of possible values that can be given to each qualifier |
| "DefaultQualifierValues" | the list of default values for the property's qualifiers        |
| "Description"            | a brief textual description of the property                     |
| "Definition"             | a detailed textual definition of the property                   |
| "PhysicalQuantity"       | the physical quantity associated with the entity-property value |
| "Unit"                   | the unit associated with the entity-property value              |

* A qualifier value of ``Automatic`` indicates that an applicable format of values can be used; e.g. for the ``"Date"`` qualifier, this includes a proper date or date span.

---

## Examples (4)

### Basic Examples (4)

Use ctrl+= for entity discovery:

```wl
In[1]:= \[FreeformPrompt]["superphenix nuclear reactor"]

Out[1]= Entity["NuclearReactor", "SuperPhenix"]
```

---

Find a property value for an entity:

```wl
In[1]:= Entity["NuclearReactor", "Monju"]["FirstCriticalityDate"]

Out[1]= DateObject[{1994, 4, 5}, "Day"]
```

---

Retrieve a dataset of all available properties for an entity:

```wl
In[1]:= Entity["NuclearReactor", "Phenix"]["Dataset"]

Out[1]=
Dataset[Association[EntityProperty["GeoLocation", "Coordinates"] -> {44.143333, 4.711667}, 
  EntityProperty["GeoLocation", "Latitude"] -> Quantity[44.143333, "AngularDegrees"], 
  EntityProperty["GeoLocation", "Longitude"] -> Quantity[4.711667, "A ... yClasses"] -> {EntityClass["NuclearReactor", "AllReactors"], 
    EntityClass["NuclearReactor", "PermanentShutdown"]}, 
  EntityProperty["Thing", "EntityTypeList"] -> {EntityType["NuclearReactor"]}, 
  EntityProperty["Thing", "Name"] -> "Phenix"]]
```

---

Find the nuclear reactors that produce the most energy each year:

```wl
In[1]:= EntityClass["NuclearReactor", {"AnnualEnergyProduction" -> TakeLargest[5]}]//EntityList

Out[1]= {Entity["NuclearReactor", "Isar2Kki2"], Entity["NuclearReactor", "ChoozB2"], Entity["NuclearReactor", "PaloVerde3"], Entity["NuclearReactor", "EmslandKke"], Entity["NuclearReactor", "KashiwazakiKariwa6"]}
```

## See Also

* [`NuclearTestSite`](https://reference.wolfram.com/language/ref/entity/NuclearTestSite.en.md)
* [`NuclearExplosion`](https://reference.wolfram.com/language/ref/entity/NuclearExplosion.en.md)
* [`WeatherStation`](https://reference.wolfram.com/language/ref/entity/WeatherStation.en.md)
* [`AstronomicalObservatory`](https://reference.wolfram.com/language/ref/entity/AstronomicalObservatory.en.md)
* [`ParticleAccelerator`](https://reference.wolfram.com/language/ref/interpreter/ParticleAccelerator.en.md)
* [`NuclearReactor`](https://reference.wolfram.com/language/ref/interpreter/NuclearReactor.en.md)
* [`NuclearReactorClass`](https://reference.wolfram.com/language/ref/interpreter/NuclearReactorClass.en.md)
* [`ComputedNuclearReactor`](https://reference.wolfram.com/language/ref/interpreter/ComputedNuclearReactor.en.md)
* [`NuclearReactor`](https://reference.wolfram.com/language/ref/textcontent/NuclearReactor.en.md)

## Related Guides

* [Entity Types](https://reference.wolfram.com/language/guide/EntityTypes.en.md)

## History

* [Introduced in 2019 (12.0)](https://reference.wolfram.com/language/guide/SummaryOfNewFeaturesIn120.en.md)