Constellation Energy
E394176
Constellation Energy is a U.S.-based energy company that generates and supplies electricity, with a significant focus on nuclear power and other low-carbon energy sources.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Constellation Energy canonical | 2 |
| Baltimore Gas and Electric | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3881053 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Constellation Energy Context triple: [Calvert Cliffs Nuclear Power Plant, owner, Constellation Energy]
-
A.
Exelon
Exelon is a major American energy company and utility services holding corporation, known for operating one of the largest fleets of nuclear power plants in the United States.
-
B.
Berkshire Hathaway Energy
Berkshire Hathaway Energy is a major U.S.-based energy company focused on regulated utilities and renewable power generation, operating as a key subsidiary of Warren Buffett’s Berkshire Hathaway conglomerate.
-
C.
PSE&G
PSE&G (Public Service Electric and Gas Company) is a major regulated utility in New Jersey that provides electric and natural gas service to millions of customers.
-
D.
Xcel Energy
Xcel Energy is a major U.S. electric and natural gas utility company serving millions of customers across several Midwestern and Western states.
-
E.
Reliant Energy
Reliant Energy is a U.S.-based retail electricity provider and energy company known for supplying power to residential and commercial customers, particularly in Texas.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Constellation Energy Target entity description: Constellation Energy is a U.S.-based energy company that generates and supplies electricity, with a significant focus on nuclear power and other low-carbon energy sources.
-
A.
Exelon
Exelon is a major American energy company and utility services holding corporation, known for operating one of the largest fleets of nuclear power plants in the United States.
-
B.
Berkshire Hathaway Energy
Berkshire Hathaway Energy is a major U.S.-based energy company focused on regulated utilities and renewable power generation, operating as a key subsidiary of Warren Buffett’s Berkshire Hathaway conglomerate.
-
C.
PSE&G
PSE&G (Public Service Electric and Gas Company) is a major regulated utility in New Jersey that provides electric and natural gas service to millions of customers.
-
D.
Xcel Energy
Xcel Energy is a major U.S. electric and natural gas utility company serving millions of customers across several Midwestern and Western states.
-
E.
Reliant Energy
Reliant Energy is a U.S.-based retail electricity provider and energy company known for supplying power to residential and commercial customers, particularly in Texas.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
energy company
ⓘ
public company ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| emphasis |
decarbonization
ⓘ
low-carbon electricity ⓘ |
| energySource |
hydroelectric
ⓘ
natural gas ⓘ nuclear ⓘ renewable energy ⓘ solar ⓘ wind ⓘ |
| focusesOn |
clean energy
ⓘ
low-carbon energy ⓘ nuclear power ⓘ |
| foundedIn | 2022 spin-off from Exelon generation business ⓘ |
| hasAttribute |
low-carbon intensive generation portfolio
ⓘ
major U.S. nuclear operator ⓘ |
| hasBusinessActivity |
electricity generation
ⓘ
electricity marketing ⓘ energy trading ⓘ retail energy supply ⓘ wholesale energy supply ⓘ |
| hasGoal |
reducing carbon emissions
ⓘ
supporting energy transition ⓘ |
| headquartersLocation |
Baltimore, Maryland, United States
ⓘ
surface form:
Baltimore, Maryland
|
| industry |
electricity generation
ⓘ
electricity supply ⓘ energy ⓘ |
| listedOn |
NASDAQ
ⓘ
surface form:
Nasdaq
|
| operates |
natural gas-fired power plants
ⓘ
nuclear power plants ⓘ renewable energy facilities ⓘ |
| parentCompany |
Exelon
ⓘ
surface form:
Exelon Corporation
|
| provides |
energy management services
ⓘ
power purchase agreements ⓘ sustainable energy solutions ⓘ |
| regionServed |
United States of America
ⓘ
surface form:
United States
|
| separatedFrom |
Exelon
ⓘ
surface form:
Exelon Corporation
|
| servesMarket |
commercial customers
ⓘ
industrial customers ⓘ residential customers ⓘ |
| tickerSymbol | CEG ⓘ |
| website | https://www.constellationenergy.com/ ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Constellation Energy Description of subject: Constellation Energy is a U.S.-based energy company that generates and supplies electricity, with a significant focus on nuclear power and other low-carbon energy sources.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Baltimore Gas and Electric