Consolidated Subsidiaries

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Tokyo Electric Power Company Holdings, Inc.

As of the end of FY2023

Company Name Location Capital
(Japanese companies:million yen)
Description of Major Business Ratio of voting rights owned by TEPCO Group
- The number shown in the parentheses “( )” indicates the indirect ownership ratio and is included in the left ratio.
TEPCO Fuel & Power, Incorporated Chiyoda-ku, Tokyo 30,000 Managing the business activities of affiliates that engage in fuel and thermal power businesses. 100.00% -
TEPCO Power Grid, Incorporated Chiyoda-ku, Tokyo 80,000 Electric power transmission and distribution businesses 100.00% -
TEPCO Energy Partner, Incorporated Chiyoda-ku, Tokyo 260,000 Retail electricity businesses 100.00% -
TEPCO Renewable Power, Incorporated Chiyoda-ku, Tokyo 1,000 Renewable energies business 100.00% -
TODEN REAL ESTATE Co., Inc. Chuo-ku, Tokyo 7,831 Rental and management of office space, company housing 100.00% -
Tokyo Power Technology Ltd. Koto-ku, Tokyo 100 Construction/ operation/ maintenance of power generation equipment, etc., environmental/energy business, and Oze region business 100.00% -
Tokyo Electric Power Services Company, Limited (TEPSCO) Koto-ku, Tokyo 40 Civil engineering, construction and electric facility design and supervision 100.00% -
TEPCO SYSTEMS CORPORATION Koto-ku, Tokyo 350 Computer system planning, development, and maintenance 100.00% -
TEPCO RESOURCES INC. Canada CAN$ 246,960,000 Mining, smelting and sales of uranium 100.00% -
TEPCO HUMMING WORK CO., LTD. Hino-shi, Tokyo 60 Printing, cleaning, gardening service, support of administration/general affairs, and others 100.00% -
Toso Real Estate Management Co., Ltd Futaba-gun, Fukushima 20 Leasing/borrowing of real estate, repair and cleaning of building, and management of cafeterias and dormitories 100.00% -
Tepco Partners Co.,Ltd. Toshima-ku, Tokyo 50 Nursing-care insurance business and training related business 100.00% -
TEPCO Ventures, Inc. Chiyoda-ku, Tokyo 50 New businesses, investment and financing for start-up ventures, incubation 100.00% -
TEPCO Fintech, Inc. Chiyoda-ku, Tokyo 150 Financial service which focusing on business development and deployment, installment and lease in arena of finance and clearance 100.00% -
TEPCO Global Energy Pte. Ltd. Singapore US$ 5.85mil Investing in solar business at ASEAN 100.00% -
Tokyo Electric Power Timeless Capital, Inc.

Chiyoda-ku, Tokyo

50 Investment, financing and administrative guidance to companies 90.00% -
Recyclable-Fuel Storage Company Mutsu-shi, Aomori 3,000 Storage and management of spent fuel from nuclear power plants and incidental businesses 80.00% -
ATEMA KOGEN RESORT INC. Tokamachi-shi, Niigata 100 Hotel and golf course management 80.00% -
Tousou Mirai Technology Co. Ltd. Futaba-gun, Fukushima 1,000 Research and development for fuel debris removal, and basic design of systems and facilities 75.00% -
TOUSOU MIRAI MANUFACTURING, INC Futaba-gun, Fukushima 750 Manufacture and sell decommissioning related products, such as casks for the transportation and storage of spent nuclear fuel 66.67% -
e-Mobility Power Co.,Inc. Minato-ku, Tokyo 10,000 Build EV charging infrastructure and provide charging network services 54.66% -
Iitate Bio Partners Company Limited

Souma-gun, fukushima

300 Biomas power generation business in Iitate Village focusing on accelerating revitalizing Fukushima and forestry industry by effectively utilizing timber from Fukushima as main fuel such as piled up timbers from forest thinning and bark. 60.00% (20.00%)
TOSETSU CIVIL ENGINEERING CONSULTANT INC. Bunkyo-ku, Tokyo 10 Survey, measurement, inspection of civil engineering facilities 100.00% (100.00%)
TEPCO Innovation and Investments US, Inc. USA US$ 4 mil Investment/management of venture businesses in the United States 100.00% (100.00%)
TEPSCO Vietnam Vietnam 622.5 mil
Vietnam Don
Construction consulting-related sales and project support 100.00% (100.00%)
Tokyo Electric Power Timeless Capital 1, ILP Chiyoda-ku, Tokyo 3,076 The acquisition and ownership of shares, equity, share warrant, designated securities, monetary claim, and benefitial interest in trust. Investment in investment partnership and management of surplus funds. 100.00% (100.00%)
Tokyo Electric Power Timeless Capital 2, ILP Chiyoda-ku, Tokyo 23,173 The acquisition and oweneship of shares or share warrant, and management of surplus funds 100.00% (100.00%)
Tokyo Electric Power Timeless Capital 3, ILP Chiyoda-ku, Tokyo 225 Acquisition and holding of shares or stock acquisition rights, and investment of surplus funds 100.00% (100.00%)
TF Uchisaiwaicho TMK Chiyoda-ku, Tokyo 9,623 Managing the asset securitization for the purpose of acquiring reserved land in the southern zone of the Hibiya area for the "Machi-Zukuri Project (Urban development project)". 100.00% (100.00%)
TOKYO RECORDS MANAGEMENT CO., INC Shinagawa-ku, Tokyo 20 Production, storage and management of information records 70.00% (70.00%)

TEPCO Power Grid, Inc.

As of the end of FY2023

Company Name Location Capital
(Japanese companies:million yen)
Description of Major Business Ratio of voting rights owned by TEPCO Group
- The number shown in the parentheses “( )” indicates the indirect ownership ratio and is included in the left ratio.
Tokyo Densetsu Service Co., Ltd. Taito-ku, Tokyo 50 Power facilities, steel/concrete structures, renewable energy facility consulting/design/construction/inspection and diagnostics/monitoring control 100.00% (100.00%)
Tepco Town Planning Corporation Limited Minato-ku, Tokyo 100 Power facility construction/maintenance, utility pole advertisement sales/management, consulting and schedule adjustment services pertaining to subterranean facilities and regional development 100.00% (100.00%)
Tokyo Land Management Corporation Arakawa-ku, Tokyo 100 Utility pole site work, management of power transmission line sites and other land owned by TEPCO, acquisition of utility pole and power transmission line sites, consulting the acquisition and management service of sites, etc. for business use 100.00% (100.00%)
Tepco Solution Advance Co., Ltd. Minto-ku, Tokyo 10 Back-office operation of power and gas (such as accepting application, cost calculation, income management), field business of power (dispatch service, research ), BPO business 100.00% (100.00%)
TEPCO Power Grid UK Limited UK 74.19 mil UK
pounds(£m)
Investing, financing and management in power transmission and distribution business in Europe and consulting on management, technology, finance and administrative operation related to these business. Moreover, sales of technology, know-how, and information. 100.00% (100.00%)
Agile Energy X, Inc. Minato-ku, Tokyo 175 Projects contributing to the effective use of clean energy resources and the optimisation of the electricity system through distributed energy resource equipment, such as distributed computing devices 100.00% (100.00%)
TEPCO LOGISTICS CO., LTD. Shinagawa-ku, Tokyo 50 Procurement, storage, transportation, delivery, and customs clearance of electric power equipment. Sales and rental of materials and equipment 80.00% (80.00%)
Energy gateway Co., Ltd. Minato-ku, Tokyo 30 IoT platform service provision 60.00% (60.00%)
TEPCO OPTICAL NETWORK ENGINEERING INC. Bunkyo-ku, Tokyo 150 Maintenance of telecommunication cables for power security, construction and maintenance of telecommunication and equipment for telecommunication business, and ASP business 51.00% (51.00%)
FI1 Limited UK 8.89 mil UK
pounds(£m)
Investment in the UK-Germany international interconnection line project (NeuConnect) 100.00% (100.00%)

TEPCO Energy Partner, Inc.

As of the end of FY2023

Company Name Location Capital
(Japanese companies:million yen)
Description of Major Business Ratio of voting rights owned by TEPCO Group 
- The number shown in the parentheses “( )” indicates the indirect ownership ratio and is included in the left ratio.
Tepco Customer Service Corporation Limited Minatoku, Tokyo 10 Sales, construction work, and leasing of machinery and equipment related to the new electric power business, electricity and other energy use, and sales-related work (e.g. calculation of electricity charges and income management). 100.00% (100.00%)
FAMILYNET JAPAN CORPORATION Minato-ku,Tokyo 490 Internet access services for apartment buildings, electricity and energy sales, brokerage and supply
Energy monitoring and energy information utilization services, settlement agency services, etc.
100.00% (100.00%)
JAPAN FACILITY SOLUTIONS, INC Shinagawa-ku, Tokyo 490 Energy service business, energy management business, energy consulting business, ESCO service business 100.00% (100.00%)
TEPCO Frontier Partners, LLC. Chiyoda-ku, Tokyo 8 Investment and financing for start-up ventures 100.00% (100.00%)
Morigasaki Energy Service Co., Ota-ku, Tokyo 100 Electric power and hot water supply and power load adjustment for Morigasaki Wastewater Treatment Center,Tokyo Bureau of Sewerage 100.00% (100.00%)
PinT Chiyoda-ku, Tokyo 400 Electricity retailing, gas retailing, telecommunications, development and sale of energy-related services 100.00% (100.00%)
Houseplus Corporation, Inc. Minato-ku, Tokyo 907 Assessment and issuance of residential certificates for buildings, liability insurance, security-related matters, etc. 61.34% (61.34%)
Japan Natural Energy Company Limited Shinagawa-ku, Tokyo 395 Providing environmental value through "Green Electric Power Certificate System" and Green Heat Certificate System 57.98% (57.98%)
TEPCO HomeTech, Inc. Sumida-ku, Tokyo 475 Planning, proposal, design and construction for new and existing buildings to save energy, etc. 51.00% (51.00%)
TEPCO Energy Partner International (Thailand) Co.,Ltd. Thailand 15 mil
Thai baht(THB)
Energy service (EX, co-generation/heat sources/solar) provision, Green power certificate sales 49.00% (49.00%)
NF Power Service Co.,Ltd Minato-ku, Tokyo 100 Sales, purchase, brokerage and supply of electricity and energy, etc. 51.00% (51.00%)
HFP Test Center, LLC. Yokohama-shi, Kanagawa 5 Performance evaluation tests for fire-resistant construction components, and performance tests for fire-resistant construction 51.00% (51.00%)

TEPCO Renewable Power, Inc.

As of the end of FY2023

Company Name Location Capital
(Japanese companies:million yen)
Description of Major Business Ratio of voting rights owned by TEPCO Group
- The number shown in the parentheses “( )” indicates the indirect ownership ratio and is included in the left ratio.
TEPCO Renewable Power Singapore Pte. Ltd. Singapore US$82.38 mil Investment in overseas hydroelectric power projects 100.00% (100.00%)
Flotation Energy Ltd UK 126.7 mil UK
pounds (£m)
Development, construction and operation of offshore wind power projects 100.00% (100.00%)
The Tokyo Electric Generation Co.,Ltd. Taito-ku, Tokyo 12,500 Electricity generation and electricity sales 80.00% (80.00%)
Flotation Energy Taiwan Ltd Taiwan 500,000 New
Taiwan dollars
(NTD)
Development, construction and operation of offshore wind power projects 100.00% (100.00%)
Blackwater Offshore Wind Holdco Limited UK 100 UK
pounds
Investment, holding company 100.00% (100.00%)
Blackwater OWL Offshore Wind Farm Limited Ireland 100
Euro
Development, construction and operation of offshore wind power projects 100.00% (100.00%)
Flotation Energy Pty Ltd Australia AUD$101 Development, construction and operation of offshore wind power projects 100.00% (100.00%)
Flotation Energy (Japan) Co. Ltd. Niigata-shi, Niigata 1 Development, construction and operation of offshore wind power projects 100.00% (100.00%)
Greystones Offshore Wind Holdco Limited UK 100 UK
pounds
Investment, holding company 100.00% (100.00%)
Greystones OWL Offshore Wind Farm Limited Ireland 100
EUR
Development, construction and operation of offshore wind power projects 100.00% (100.00%)
White Cross Offshore Wind Holdco Ltd UK 100 UK
pounds
Investment, holding company 100.00% (100.00%)
White Cross Offshore Windfarm Ltd UK 100 UK
pounds
Development, construction and operation of offshore wind power projects 100.00% (100.00%)
Sea Dragon Holdco Ltd UK 100
UK pounds
Investment, holding company 100.00% (100.00%)
Flotation Energy Sea Dragon Pty Ltd Australia AUD$100 Development, construction and operation of offshore wind power projects 100.00% (100.00%)
SEADRAGON OFFSHORE WIND PTY LTD Australia AUD$100 Development, construction and operation of offshore wind power projects 100.00% (100.00%)
TAIWAN OFFSHORE WIND LTD UK 100 UK
pounds
Investment, holding company 100.00% (100.00%)
Tsuru Biomass Power Generation LLC. Taito-ku, Tokyo 100 operation of using woody biomass fuel power projects 90.00% (90.00%)

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