Tokyo Electric Power Company

E223647

electric utility company public company

Tokyo Electric Power Company is Japan’s largest electric utility, internationally known for operating the Fukushima Daiichi nuclear plant involved in the 2011 nuclear disaster.

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All labels observed (9)

Label	Occurrences
Tokyo Electric Power Company canonical	9
TEPCO	5
Tokyo Electric Power Company Holdings, Incorporated	2
TEPCO Energy Partner, Inc.	1
TEPCO Fuel & Power, Inc.	1
TEPCO Holdings	1
TEPCO Power Grid, Inc.	1
Tokyo Electric Power Company Holdings, Inc.	1
東京電力ホールディングス株式会社	1

How this entity was disambiguated

This entity first appeared as the object of triple T1979338 — 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: Tokyo Electric Power Company
Context triple: [Fukushima Daiichi nuclear disaster, operator, Tokyo Electric Power Company]

A. Nippon Electric Company
Nippon Electric Company, now known as NEC Corporation, is a major Japanese multinational provider of information technology and electronics solutions.
B. Tokyu Corporation
Tokyu Corporation is a major Japanese private railway and real estate company based in Tokyo, known for operating extensive rail networks and developing commercial and residential areas, particularly around Shibuya.
C. Engie
Engie is a major French multinational utility company specializing in electricity, natural gas, and energy services, with a strong focus on renewable and low-carbon energy solutions.
D. Keio Corporation
Keio Corporation is a major Japanese private railway and transportation company operating rail lines and related services in the Tokyo metropolitan area.
E. Tokyo Tower Co., Ltd.
Tokyo Tower Co., Ltd. is the company responsible for operating and maintaining Tokyo Tower, one of Japan’s most iconic landmarks and tourist attractions.
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: Tokyo Electric Power Company
Target entity description: Tokyo Electric Power Company is Japan’s largest electric utility, internationally known for operating the Fukushima Daiichi nuclear plant involved in the 2011 nuclear disaster.

A. Nippon Electric Company
Nippon Electric Company, now known as NEC Corporation, is a major Japanese multinational provider of information technology and electronics solutions.
B. Tokyu Corporation
Tokyu Corporation is a major Japanese private railway and real estate company based in Tokyo, known for operating extensive rail networks and developing commercial and residential areas, particularly around Shibuya.
C. Engie
Engie is a major French multinational utility company specializing in electricity, natural gas, and energy services, with a strong focus on renewable and low-carbon energy solutions.
D. Keio Corporation
Keio Corporation is a major Japanese private railway and transportation company operating rail lines and related services in the Tokyo metropolitan area.
E. Tokyo Tower Co., Ltd.
Tokyo Tower Co., Ltd. is the company responsible for operating and maintaining Tokyo Tower, one of Japan’s most iconic landmarks and tourist attractions.
F. None of above. chosen

Statements (50)

Predicate	Object
instanceOf	electric utility company ⓘ public company ⓘ
alsoKnownAs	TEPCO ⓘ linked to: Tokyo Electric Power Company Tokyo Electric Power Company Holdings, Incorporated ⓘ linked to: Tokyo Electric Power Company
businessModel	vertically integrated electric utility ⓘ
country	Japan ⓘ
foundedBy	Japanese government-related interests ⓘ
hasHeadOfGovernment	president and CEO ⓘ
headquartersLocation	Chiyoda, Tokyo ⓘ Tokyo ⓘ
inception	1951 ⓘ
industry	electric power industry ⓘ energy ⓘ nuclear power industry ⓘ
knownFor	Fukushima Daiichi nuclear disaster ⓘ
languageOfWorkOrName	Japanese ⓘ
legalForm	kabushiki gaisha ⓘ
locatedInTimeZone	Japan Standard Time ⓘ
nativeLabel	東京電力ホールディングス株式会社 ⓘ linked to: Tokyo Electric Power Company
numberOfEmployees	over 30,000 ⓘ
operates	Fukushima Daiichi Nuclear Power Plant ⓘ Fukushima Daini Nuclear Power Plant ⓘ Kashiwazaki-Kariwa Nuclear Power Plant ⓘ distribution networks ⓘ hydroelectric power plants ⓘ thermal power plants ⓘ transmission networks ⓘ
parentOrganization	Tokyo Electric Power Company Holdings, Incorporated ⓘ linked to: Tokyo Electric Power Company
product	electricity ⓘ power distribution services ⓘ power generation services ⓘ power transmission services ⓘ
rank	largest electric utility in Japan by electricity sales ⓘ
regulator	Agency for Natural Resources and Energy (Japan) ⓘ Nuclear Regulation Authority of Japan ⓘ linked to: Nuclear Regulation Authority (Japan)
reorganizedAs	holding company structure in 2016 ⓘ
serviceArea	Kantō region ⓘ Tokyo metropolitan area ⓘ Yamanashi Prefecture NERFINISHED ⓘ eastern Shizuoka Prefecture ⓘ linked to: Shizuoka Prefecture
sharesOutstanding	listed on First Section of Tokyo Stock Exchange before reorganization ⓘ
shortName	TEPCO Holdings ⓘ linked to: Tokyo Electric Power Company
significantEvent	2011 Fukushima Daiichi nuclear accident ⓘ 2011 Tōhoku earthquake and tsunami ⓘ
stockExchange	Tokyo Stock Exchange ⓘ
subsidiary	TEPCO Energy Partner, Inc. ⓘ linked to: Tokyo Electric Power Company TEPCO Fuel & Power, Inc. ⓘ linked to: Tokyo Electric Power Company TEPCO Power Grid, Inc. ⓘ linked to: Tokyo Electric Power Company
tickerSymbol	9501 ⓘ
website	https://www.tepco.co.jp ⓘ

How these facts were elicited