Imatra hydropower plant
E316282
The Imatra hydropower plant is one of Finland’s largest and oldest hydroelectric stations, harnessing the rapids at Imatra to generate electricity and serving as a notable industrial and tourist landmark.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Imatra hydroelectric power plant | 1 |
| Imatra hydropower plant canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2990062 — 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: Imatra hydropower plant Context triple: [Vuoksi River, hasHydropowerPlant, Imatra hydropower plant]
-
A.
Plavinas Hydroelectric Power Plant
Plavinas Hydroelectric Power Plant is one of the largest hydroelectric power stations in the Baltic region, located in Latvia and serving as a major source of renewable electricity.
-
B.
Kegums Hydroelectric Power Plant
Kegums Hydroelectric Power Plant is a major Latvian hydroelectric facility on the Daugava River that generates electricity and helps regulate water flow for the region.
-
C.
Riga Hydroelectric Power Plant
Riga Hydroelectric Power Plant is a major hydroelectric facility in Latvia that generates electricity for the region using the flow of the Daugava River.
-
D.
Alfalfal hydroelectric plant
The Alfalfal hydroelectric plant is a power-generating facility in Chile that harnesses the flow of the Maipo River to produce electricity.
-
E.
Ivankovo Hydroelectric Station
Ivankovo Hydroelectric Station is a major Soviet-era hydroelectric power plant on the Volga River in Russia, forming part of the Upper Volga cascade and supplying electricity as well as regulating water levels for navigation and water management.
- 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: Imatra hydropower plant Target entity description: The Imatra hydropower plant is one of Finland’s largest and oldest hydroelectric stations, harnessing the rapids at Imatra to generate electricity and serving as a notable industrial and tourist landmark.
-
A.
Plavinas Hydroelectric Power Plant
Plavinas Hydroelectric Power Plant is one of the largest hydroelectric power stations in the Baltic region, located in Latvia and serving as a major source of renewable electricity.
-
B.
Kegums Hydroelectric Power Plant
Kegums Hydroelectric Power Plant is a major Latvian hydroelectric facility on the Daugava River that generates electricity and helps regulate water flow for the region.
-
C.
Riga Hydroelectric Power Plant
Riga Hydroelectric Power Plant is a major hydroelectric facility in Latvia that generates electricity for the region using the flow of the Daugava River.
-
D.
Alfalfal hydroelectric plant
The Alfalfal hydroelectric plant is a power-generating facility in Chile that harnesses the flow of the Maipo River to produce electricity.
-
E.
Ivankovo Hydroelectric Station
Ivankovo Hydroelectric Station is a major Soviet-era hydroelectric power plant on the Volga River in Russia, forming part of the Upper Volga cascade and supplying electricity as well as regulating water levels for navigation and water management.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
hydroelectric power station
ⓘ
power plant ⓘ |
| annualGeneration | about 1 TWh ⓘ |
| architect | Uno Ullberg ⓘ |
| architecturalStyle | Nordic Classicism ⓘ |
| commissioned | 1929 ⓘ |
| connectsTo | Imatra switchyard ⓘ |
| connectsToGridOf | Finnish national grid ⓘ |
| constructionMaterial | reinforced concrete ⓘ |
| country | Finland ⓘ |
| designedFor | harnessing Imatrankoski rapids ⓘ |
| gridRole | base-load generation ⓘ |
| hasBuilding | powerhouse ⓘ |
| hasDam | Imatra dam ⓘ |
| hasFunction |
frequency regulation support
ⓘ
peak load support ⓘ |
| hasHeritageStatus | culturally significant built environment in Finland ⓘ |
| hasSpillway | Imatra spillway ⓘ |
| hasTouristFeature |
guided tours
ⓘ
viewing platforms ⓘ |
| hasType | run-of-the-river plant ⓘ |
| historicalSignificance | early large-scale hydropower project in Finland ⓘ |
| inception | 1929 ⓘ |
| installedCapacity | about 192 MW ⓘ |
| isOneOfLargestIn | Finland ⓘ |
| isOneOfOldestIn | Finland ⓘ |
| locatedIn |
Imatra
NERFINISHED
ⓘ
South Karelia ⓘ |
| locatedNear |
Imatra
ⓘ
surface form:
Imatra city centre
|
| locatedOnWatercourse | Vuoksi River NERFINISHED ⓘ |
| near | Russian border ⓘ |
| numberOfTurbines | 7 ⓘ |
| operator |
Fortum
ⓘ
Imatran Voima ⓘ |
| ownedBy | Fortum ⓘ |
| partOf | Finnish hydropower system ⓘ |
| primaryEnergySource | hydropower ⓘ |
| purpose |
electricity generation
ⓘ
industrial power supply ⓘ tourist attraction ⓘ |
| region |
South Karelia
ⓘ
surface form:
South Karelia region
|
| startOfConstruction | 1922 ⓘ |
| status | operational ⓘ |
| turbineType | Francis turbine ⓘ |
| usesWaterSource | Imatrankoski rapids ⓘ |
| watercourseRegulation | Vuoksi River flow regulation ⓘ |
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: Imatra hydropower plant Description of subject: The Imatra hydropower plant is one of Finland’s largest and oldest hydroelectric stations, harnessing the rapids at Imatra to generate electricity and serving as a notable industrial and tourist landmark.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Imatra hydroelectric power plant