Tonstad Hydropower Station
E861088
Tonstad Hydropower Station is one of Norway’s largest hydroelectric power plants, known for its significant electricity production and role in the country’s renewable energy supply.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tonstad Hydropower Station canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10398708 — 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: Tonstad Hydropower Station Context triple: [Sirdal municipality, hasHydropowerPlant, Tonstad Hydropower Station]
-
A.
Lysebotn Hydropower Station
Lysebotn Hydropower Station is a major Norwegian hydroelectric power plant located at the end of the Lysefjord, known for its large underground facilities and significant electricity production.
-
B.
Gravfoss power station
Gravfoss power station is a hydroelectric power plant located on the Drammenselva river in Norway, generating renewable electricity from the river’s flow.
-
C.
Sarpsfossen power station
Sarpsfossen power station is a hydroelectric power plant in Norway that harnesses the energy of the Glomma River at the Sarpsfossen waterfall to generate electricity.
-
D.
Hellefoss power station
Hellefoss power station is a hydroelectric power plant located on the Drammenselva river in Norway, generating renewable energy from the river’s flow.
-
E.
Åmotfoss power station
Åmotfoss power station is a hydroelectric power plant located on the Drammenselva river in Norway, generating renewable electricity from the river’s flow.
- 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: Tonstad Hydropower Station Target entity description: Tonstad Hydropower Station is one of Norway’s largest hydroelectric power plants, known for its significant electricity production and role in the country’s renewable energy supply.
-
A.
Lysebotn Hydropower Station
Lysebotn Hydropower Station is a major Norwegian hydroelectric power plant located at the end of the Lysefjord, known for its large underground facilities and significant electricity production.
-
B.
Gravfoss power station
Gravfoss power station is a hydroelectric power plant located on the Drammenselva river in Norway, generating renewable electricity from the river’s flow.
-
C.
Sarpsfossen power station
Sarpsfossen power station is a hydroelectric power plant in Norway that harnesses the energy of the Glomma River at the Sarpsfossen waterfall to generate electricity.
-
D.
Hellefoss power station
Hellefoss power station is a hydroelectric power plant located on the Drammenselva river in Norway, generating renewable energy from the river’s flow.
-
E.
Åmotfoss power station
Åmotfoss power station is a hydroelectric power plant located on the Drammenselva river in Norway, generating renewable electricity from the river’s flow.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf | hydroelectric power station ⓘ |
| annualGeneration | about 3.8 TWh ⓘ |
| commissioned | 1968 ⓘ |
| connectedTo | regional transmission network in Southern Norway ⓘ |
| contributesTo | Norwegian electricity exports ⓘ |
| country | Norway ⓘ |
| energySource | hydropower ⓘ |
| fuelType | water potential energy ⓘ |
| generationType | baseload hydropower ⓘ |
| gridConnection | Norwegian national power grid NERFINISHED ⓘ |
| hasLanguageName | Tonstad kraftverk NERFINISHED ⓘ |
| hasMaximumHead | high-head hydropower plant ⓘ |
| hasOperatorHeadquartersIn | Rogaland NERFINISHED ⓘ |
| hasPeakLoadRole | yes ⓘ |
| hasPenstock | yes ⓘ |
| hasReservoir |
Gravatn
NERFINISHED
ⓘ
Homstølvatn NERFINISHED ⓘ Lundevatn NERFINISHED ⓘ Sirdalsvatnet NERFINISHED ⓘ |
| hasSpillway | yes ⓘ |
| hasUndergroundCavern | powerhouse cavern excavated in rock ⓘ |
| hasUndergroundPowerhouse | true ⓘ |
| installedCapacity | 960 MW ⓘ |
| locatedIn |
Agder
NERFINISHED
ⓘ
Sirdal NERFINISHED ⓘ Southern Norway NERFINISHED ⓘ |
| locatedInContinent | Europe ⓘ |
| locatedOnWatercourse | Sira-Kvina watercourse NERFINISHED ⓘ |
| nearSettlement | Tonstad NERFINISHED ⓘ |
| numberOfTurbines | 5 ⓘ |
| operatedBy | Lyse Produksjon AS NERFINISHED ⓘ |
| ownedBy | Lyse Produksjon AS NERFINISHED ⓘ |
| partOf | Norwegian renewable energy system ⓘ |
| playsRoleIn | stabilizing Norwegian power system ⓘ |
| previousOwner | Sira-Kvina Kraftselskap NERFINISHED ⓘ |
| purpose | electricity generation ⓘ |
| rankInNorwayByCapacity | among largest hydroelectric power stations in Norway ⓘ |
| region | Sirdal municipality NERFINISHED ⓘ |
| regulates | water flow in Sira-Kvina system ⓘ |
| startOfConstruction | 1960s ⓘ |
| status | operational ⓘ |
| supports | renewable energy supply in Norway ⓘ |
| technology | conventional reservoir hydropower ⓘ |
| turbineType | Francis turbine ⓘ |
| usesRiver |
Kvina River
NERFINISHED
ⓘ
Sira River NERFINISHED ⓘ |
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: Tonstad Hydropower Station Description of subject: Tonstad Hydropower Station is one of Norway’s largest hydroelectric power plants, known for its significant electricity production and role in the country’s renewable energy supply.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.