Humboldt Bay Power Plant
E134751
Humboldt Bay Power Plant is a decommissioned power-generating facility in Northern California that formerly included both nuclear and fossil-fuel units serving the surrounding region’s electricity needs.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Humboldt Bay Nuclear Power Plant Unit 3 | 1 |
| Humboldt Bay Power Plant canonical | 1 |
| Humboldt Bay fossil-fuel units | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1177459 — 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: Humboldt Bay Power Plant Context triple: [Humboldt Bay, hasNearbyFacility, Humboldt Bay Power Plant]
-
A.
Hatch Nuclear Power Plant
Hatch Nuclear Power Plant is a commercial nuclear power generating facility in Georgia that supplies electricity to the regional grid as part of Southern Company's energy portfolio.
-
B.
Devil Canyon Powerplant
Devil Canyon Powerplant is a hydroelectric generating facility in Southern California that produces power as part of the State Water Project’s water conveyance and energy system.
-
C.
Glenwood Power Station
Glenwood Power Station is an early 20th-century, now-abandoned industrial power plant on the Hudson River in Yonkers, New York, noted for its grand Beaux-Arts architecture and historic significance.
-
D.
Hyatt Powerplant
Hyatt Powerplant is a major hydroelectric generating facility in California that harnesses water from Lake Oroville as part of the State Water Project’s power and water delivery system.
-
E.
Enrico Fermi Nuclear Generating Station
The Enrico Fermi Nuclear Generating Station is a nuclear power plant complex located on the shore of Lake Erie in Michigan, known for housing multiple reactor units including the Fermi 2 boiling water reactor.
- 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: Humboldt Bay Power Plant Target entity description: Humboldt Bay Power Plant is a decommissioned power-generating facility in Northern California that formerly included both nuclear and fossil-fuel units serving the surrounding region’s electricity needs.
-
A.
Hatch Nuclear Power Plant
Hatch Nuclear Power Plant is a commercial nuclear power generating facility in Georgia that supplies electricity to the regional grid as part of Southern Company's energy portfolio.
-
B.
Devil Canyon Powerplant
Devil Canyon Powerplant is a hydroelectric generating facility in Southern California that produces power as part of the State Water Project’s water conveyance and energy system.
-
C.
Glenwood Power Station
Glenwood Power Station is an early 20th-century, now-abandoned industrial power plant on the Hudson River in Yonkers, New York, noted for its grand Beaux-Arts architecture and historic significance.
-
D.
Hyatt Powerplant
Hyatt Powerplant is a major hydroelectric generating facility in California that harnesses water from Lake Oroville as part of the State Water Project’s power and water delivery system.
-
E.
Enrico Fermi Nuclear Generating Station
The Enrico Fermi Nuclear Generating Station is a nuclear power plant complex located on the shore of Lake Erie in Michigan, known for housing multiple reactor units including the Fermi 2 boiling water reactor.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
electric power station
ⓘ
power plant ⓘ |
| commissioned | 1950s ⓘ |
| coolingSource | Humboldt Bay ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentUse | decommissioning and storage site ⓘ |
| decommissioningActivity |
reactor dismantlement
ⓘ
site remediation ⓘ spent fuel management ⓘ |
| decommissioningStart | 1970s ⓘ |
| energySource |
fossil fuel
ⓘ
nuclear power ⓘ |
| environmentalConcern |
fossil-fuel emissions
ⓘ
radioactive waste management ⓘ |
| formerTechnology | boiling water reactor ⓘ |
| fuelType | uranium (for nuclear unit) ⓘ |
| gridConnection |
California electrical grid
ⓘ
surface form:
California electricity grid
|
| gridOperator | Pacific Gas and Electric Company ⓘ |
| gridRole |
baseload generation (historical)
ⓘ
regional reliability support ⓘ |
| hasPart |
Humboldt Bay Power Plant
self-linksurface differs
ⓘ
surface form:
Humboldt Bay Nuclear Power Plant Unit 3
Humboldt Bay Power Plant self-linksurface differs ⓘ
surface form:
Humboldt Bay fossil-fuel units
|
| hasUnit |
Unit 3 (nuclear)
ⓘ
fossil-fuel steam units ⓘ gas turbine units ⓘ |
| historicalUse | combined nuclear and fossil-fuel generation ⓘ |
| industrySector | electric power industry ⓘ |
| locatedIn |
Humboldt County
ⓘ
surface form:
Humboldt County, California
Northern California ⓘ |
| locatedNear |
Eureka, California
ⓘ
Humboldt Bay ⓘ |
| locatedOn | Pacific coast of the United States ⓘ |
| notableFeature | one of the earliest commercial nuclear power plants in California ⓘ |
| operator | Pacific Gas and Electric Company ⓘ |
| ownedBy | Pacific Gas and Electric Company ⓘ |
| primaryFuel | natural gas ⓘ |
| purpose | electricity generation ⓘ |
| region | West Coast of the United States ⓘ |
| regulatoryBody |
California Energy Commission
ⓘ
U.S. Nuclear Regulatory Commission ⓘ |
| safetyClassification | nuclear facility (historical) ⓘ |
| secondaryFuel | fuel oil ⓘ |
| served | regional electricity needs in Northern California ⓘ |
| servedRegion |
Humboldt County
ⓘ
North Coast of California ⓘ
surface form:
North Coast region of California
|
| state |
California, United States
ⓘ
surface form:
California
|
| status | decommissioned ⓘ |
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: Humboldt Bay Power Plant Description of subject: Humboldt Bay Power Plant is a decommissioned power-generating facility in Northern California that formerly included both nuclear and fossil-fuel units serving the surrounding region’s electricity needs.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Humboldt Bay Nuclear Power Plant Unit 3
this entity surface form:
Humboldt Bay fossil-fuel units