Exelon
E167165
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.
All labels observed (8)
| Label | Occurrences |
|---|---|
| Exelon Corporation | 3 |
| Commonwealth Edison Company | 2 |
| Baltimore Gas and Electric Company | 1 |
| Commonwealth Edison | 1 |
| Exelon canonical | 1 |
| Exelon (minority stake) | 1 |
| Exelon Generation Company | 1 |
| PECO Energy Company | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1450103 — 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: Exelon Context triple: [Tom Ridge, boardMemberOf, Exelon]
-
A.
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.
-
B.
Southern Company
Southern Company is one of the largest U.S. energy providers, primarily supplying electricity and natural gas across the southeastern United States through its regulated utilities and related businesses.
-
C.
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.
-
D.
PSEG Power
PSEG Power is a major U.S. energy generation company that operates as the power production subsidiary of Public Service Enterprise Group, supplying electricity through a portfolio of power plants.
-
E.
Southern Power
Southern Power is a U.S.-based wholesale energy company that develops, owns, and operates a portfolio of power generation assets, primarily focused on clean and renewable energy.
- 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: Exelon Target entity description: 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.
-
A.
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.
-
B.
Southern Company
Southern Company is one of the largest U.S. energy providers, primarily supplying electricity and natural gas across the southeastern United States through its regulated utilities and related businesses.
-
C.
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.
-
D.
PSEG Power
PSEG Power is a major U.S. energy generation company that operates as the power production subsidiary of Public Service Enterprise Group, supplying electricity through a portfolio of power plants.
-
E.
Southern Power
Southern Power is a U.S.-based wholesale energy company that develops, owns, and operates a portfolio of power generation assets, primarily focused on clean and renewable energy.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
energy company
ⓘ
public company ⓘ utility holding company ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| energySource |
natural gas
ⓘ
nuclear ⓘ renewables ⓘ |
| foundedByMergerOf |
PECO Energy Company
ⓘ
Unicom Corporation ⓘ |
| hasBusinessSegment |
power generation
ⓘ
regulated utilities ⓘ |
| hasCustomerType |
commercial customers
ⓘ
industrial customers ⓘ residential customers ⓘ |
| hasSubsidiary |
Atlantic City Electric
ⓘ
Constellation Energy ⓘ
surface form:
Baltimore Gas and Electric
Exelon self-linksurface differs ⓘ
surface form:
Commonwealth Edison
Delmarva Power ⓘ Exelon self-linksurface differs ⓘ
surface form:
PECO Energy Company
Pepco Holdings ⓘ Pepco Holdings ⓘ
surface form:
Potomac Electric Power Company
|
| headquartersLocation |
Chicago, Illinois, United States
ⓘ
surface form:
Chicago, Illinois
|
| industry |
electric utility
ⓘ
energy ⓘ nuclear power ⓘ |
| legalForm | corporation ⓘ |
| listedIn |
S&P 500 Index
ⓘ
surface form:
S&P 500 index
|
| notableFor | operating one of the largest fleets of nuclear power plants in the United States ⓘ |
| operates | nuclear power plants ⓘ |
| operatesIn |
United States of America
ⓘ
surface form:
United States
|
| owns |
electric distribution infrastructure
ⓘ
electric transmission infrastructure ⓘ |
| predecessor |
PECO Energy Company
ⓘ
Unicom Corporation ⓘ |
| providesService |
electricity distribution
ⓘ
electricity generation ⓘ energy retail services ⓘ |
| regulator |
Federal Energy Regulatory Commission
ⓘ
U.S. Nuclear Regulatory Commission ⓘ state public utility commissions ⓘ |
| scopeOfOperations | multi-state ⓘ |
| sector | utilities ⓘ |
| stockTicker | EXC ⓘ |
| subjectTo |
environmental regulations
ⓘ
nuclear safety regulations ⓘ |
| tradesOn | NASDAQ ⓘ |
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: Exelon Description of subject: 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.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Baltimore Gas and Electric Company
this entity surface form:
Commonwealth Edison Company
this entity surface form:
Commonwealth Edison
this entity surface form:
PECO Energy Company
this entity surface form:
Exelon Corporation
this entity surface form:
Exelon Generation Company
this entity surface form:
Exelon (minority stake)
this entity surface form:
Commonwealth Edison Company
this entity surface form:
Exelon Corporation
this entity surface form:
Exelon Corporation