Casa Diablo power plants
E278440
Casa Diablo power plants are a group of geothermal power facilities near Mammoth Lakes, California, that generate electricity by tapping the volcanic heat of the Long Valley Caldera.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Casa Diablo power plants canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2565337 — 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: Casa Diablo power plants Context triple: [Long Valley Caldera, geothermalDevelopmentArea, Casa Diablo power plants]
-
A.
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.
-
B.
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.
-
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.
Comanche Peak Nuclear Power Plant
Comanche Peak Nuclear Power Plant is a commercial nuclear power generating facility in North Texas that supplies electricity to the region and is one of the state’s major nuclear power stations.
-
E.
Kingston Fossil Plant
Kingston Fossil Plant is a large coal-fired power plant operated by the Tennessee Valley Authority, known for its significant electricity generation and for a major coal ash spill in 2008.
- 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: Casa Diablo power plants Target entity description: Casa Diablo power plants are a group of geothermal power facilities near Mammoth Lakes, California, that generate electricity by tapping the volcanic heat of the Long Valley Caldera.
-
A.
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.
-
B.
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.
-
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.
Comanche Peak Nuclear Power Plant
Comanche Peak Nuclear Power Plant is a commercial nuclear power generating facility in North Texas that supplies electricity to the region and is one of the state’s major nuclear power stations.
-
E.
Kingston Fossil Plant
Kingston Fossil Plant is a large coal-fired power plant operated by the Tennessee Valley Authority, known for its significant electricity generation and for a major coal ash spill in 2008.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
electric power generation facility
ⓘ
geothermal power plant complex ⓘ |
| category |
Energy infrastructure in Mono County, California
ⓘ
Geothermal power stations in California ⓘ Renewable energy power stations in the United States ⓘ |
| coolingMethod | air-cooled condensers ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| emissionsProfile | low greenhouse gas emissions ⓘ |
| energySourceType | renewable energy ⓘ |
| environmentalConcern |
potential impact on local hot springs
ⓘ
seismic monitoring requirements ⓘ |
| fuelType | geothermal steam ⓘ |
| geologicalSetting |
Basin and Range Province
ⓘ
active volcanic caldera ⓘ |
| gridConnection | California electrical grid ⓘ |
| hasPart |
Casa Diablo I
ⓘ
Casa Diablo I ⓘ
surface form:
Casa Diablo II
Casa Diablo I ⓘ
surface form:
Casa Diablo III
Casa Diablo I ⓘ
surface form:
Casa Diablo IV
|
| heatSource |
Casa Diablo geothermal field
ⓘ
surface form:
Long Valley Caldera geothermal system
volcanic heat ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Long Valley Caldera ⓘ Mammoth Lakes area ⓘ
surface form:
Mammoth Lakes, California
Mono County, California ⓘ Eastern Sierra ⓘ
surface form:
eastern Sierra Nevada
|
| nearbyFeature |
Hot Creek Geological Site
ⓘ
Inyo National Forest ⓘ Mammoth Lakes area ⓘ
surface form:
Mammoth Lakes
|
| operator | Ormat Technologies ⓘ |
| primaryTechnology |
binary cycle geothermal power
ⓘ
flash steam geothermal power ⓘ |
| purpose | electricity generation ⓘ |
| regulatoryJurisdiction |
U.S. Bureau of Land Management
ⓘ
surface form:
Bureau of Land Management
California Energy Commission ⓘ |
| serves | local communities in eastern California ⓘ |
| usesEnergySource |
geothermal energy
ⓘ
hydrothermal resources ⓘ |
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: Casa Diablo power plants Description of subject: Casa Diablo power plants are a group of geothermal power facilities near Mammoth Lakes, California, that generate electricity by tapping the volcanic heat of the Long Valley Caldera.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.