Kemper Project power plant
E533457
The Kemper Project power plant is a controversial, partially abandoned integrated gasification combined cycle (IGCC) power facility in Mississippi that became known for massive cost overruns and the failure of its “clean coal” technology ambitions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kemper Project power plant canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5505053 — 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: Kemper Project power plant Context triple: [Kemper County, Mississippi, containsFacility, Kemper Project power plant]
-
A.
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.
-
B.
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.
-
C.
Gianelli Pumping–Generating Plant
The Gianelli Pumping–Generating Plant is a major hydroelectric and pumping facility in California that moves water for irrigation and storage while generating electricity as part of the state’s Central Valley Project.
-
D.
Lewiston Pump-Generating Plant
The Lewiston Pump-Generating Plant is a hydroelectric pumped-storage facility near Niagara Falls that works in tandem with the Robert Moses Niagara Power Plant to balance electricity supply and demand.
-
E.
Alexander Generating Station
Alexander Generating Station is a hydroelectric power facility located on the Nipigon River in Ontario, Canada, that generates 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: Kemper Project power plant Target entity description: The Kemper Project power plant is a controversial, partially abandoned integrated gasification combined cycle (IGCC) power facility in Mississippi that became known for massive cost overruns and the failure of its “clean coal” technology ambitions.
-
A.
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.
-
B.
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.
-
C.
Gianelli Pumping–Generating Plant
The Gianelli Pumping–Generating Plant is a major hydroelectric and pumping facility in California that moves water for irrigation and storage while generating electricity as part of the state’s Central Valley Project.
-
D.
Lewiston Pump-Generating Plant
The Lewiston Pump-Generating Plant is a hydroelectric pumped-storage facility near Niagara Falls that works in tandem with the Robert Moses Niagara Power Plant to balance electricity supply and demand.
-
E.
Alexander Generating Station
Alexander Generating Station is a hydroelectric power facility located on the Nipigon River in Ontario, Canada, that generates electricity from the river’s flow.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
energy infrastructure project
ⓘ
integrated gasification combined cycle power plant ⓘ power plant ⓘ |
| actualGasificationAbandonmentDate | 2017 ⓘ |
| announced | around 2006 ⓘ |
| constructionStartDate | 2010 ⓘ |
| costOverrun | more than 4 billion US dollars above initial estimate ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| criticizedFor |
being an example of clean coal technology risk
ⓘ
high costs to consumers ⓘ technical failures of gasification system ⓘ |
| currentPrimaryFuel | natural gas ⓘ |
| designedToCapture | carbon dioxide ⓘ |
| designedToSell | captured carbon dioxide for enhanced oil recovery ⓘ |
| designedToUse | locally mined lignite ⓘ |
| environmentalClaim | intended to significantly reduce CO2 emissions compared to conventional coal plants ⓘ |
| estimatedFinalCost | over 7 billion US dollars ⓘ |
| estimatedInitialCost | approximately 2.4 billion US dollars ⓘ |
| fuelTypePlanned |
lignite coal
ⓘ
natural gas ⓘ |
| gasificationTechnologyDeveloper |
KBR
NERFINISHED
ⓘ
Southern Company NERFINISHED ⓘ |
| gasificationTechnologyType | transport integrated gasification (TRIG) ⓘ |
| hasPlannedCapacity |
about 582 MW net electric output
ⓘ
approximately 582 megawatts ⓘ |
| hasProjectType |
clean coal project
ⓘ
demonstration project ⓘ |
| initialPlannedCompletion | 2014 ⓘ |
| locatedIn |
Kemper County, Mississippi
NERFINISHED
ⓘ
Mississippi NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| notableFor |
construction delays
ⓘ
controversy over ratepayer costs ⓘ failure of gasification and carbon capture systems to enter commercial operation ⓘ massive cost overruns ⓘ |
| originalConcept | clean coal power plant with carbon capture ⓘ |
| ownedBy | Mississippi Power NERFINISHED ⓘ |
| parentCompanyOfOwner | Southern Company NERFINISHED ⓘ |
| receivedFederalSupportFrom | U.S. Department of Energy NERFINISHED ⓘ |
| receivedFederalSupportType | clean coal demonstration funding ⓘ |
| regulator | Mississippi Public Service Commission NERFINISHED ⓘ |
| regulatoryOutcome | Mississippi Public Service Commission ordered end of coal gasification portion in 2017 NERFINISHED ⓘ |
| status |
operates as natural gas combined cycle plant only
ⓘ
partially abandoned ⓘ |
| technologyType |
carbon capture and storage
ⓘ
integrated gasification combined cycle ⓘ |
| usedAsCaseStudyIn |
economic viability of clean coal technologies
ⓘ
energy policy debates ⓘ project management failures in large infrastructure ⓘ |
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: Kemper Project power plant Description of subject: The Kemper Project power plant is a controversial, partially abandoned integrated gasification combined cycle (IGCC) power facility in Mississippi that became known for massive cost overruns and the failure of its “clean coal” technology ambitions.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Kemper County, Mississippi