(As of March 31, 2012)

Corporate Profile/Stock Information

Corporate Name Electric Power Development Co., Ltd.

Communication Name J-POWER

Date of Establishment Sept. 16, 1952

Headquarters Address 15-1, Ginza 6-chome, Chuo-ku, Tokyo 104-8165, Japan

Paid-in Capital ¥152,449,600,000

Number of Shares Authorized 660,000,000

Number of Shares Outstanding 166,569,600

Number of Shareholders 38,193

Stock Exchange Listing Tokyo

Independent Public Accountants Ernst & Young ShinNihon LLC

Transfer Agent Sumitomo Mitsui Trust Bank, Limited

(As of July 1, 2012)

J-POWER Generation (Thailand) Co., Ltd.

J-POWER USA Development Co., Ltd.

J-POWER Consulting (China) Co., Ltd.

Main Subsidiaries

Organization Chart

106

Wakamatsu Operations & General Management Offi ce

Regional Headquarters (Hokkaido, East, Chubu, West)Isawa Hydro Project Construction Offi ce

Ohma Main-Transmission Line Project Construction Offi ceNishi-Tokyo Main-Transmission Line Construction Offi ceKitahon Power Cable Construction Preparation Offi ce

Thermal Power Stations (Isogo, Takasago, Takehara, Tachibanawan, Matsushima, Matsuura, Ishikawa Coal)

Onikobe Geothermal Power Station

Ohma Nuclear Power Station Construction Offi ceAomori Branch Offi ce

Beijing Offi ce

Hanoi Offi ceUpper Kotomale Hydropower Project Offi ce

Chigasaki Research InstituteWakamatsu Research Institute

Internal Audit Department

ChairmanPresident

Executive Vice PresidentsDirectors

Executive Managing Offi cers

Executive Offi cers

Board of Directors

Shareholders’ meeting Executive Committee

Management Executing Committee

Board of Corporate Auditors

Corporate AuditorsCorporate Auditors’ Offi ce

Secretarial Affairs & Public Relation Dept.

Corporate Planning & Administration Dept.

Accounting & Finance Dept.

Personnel & Employee Relations Dept.

General Affairs Dept.

Siting & Environment Dept.

Business Planning Dept.

Power Sales Dept.

Energy Business Dept.

Procurement Offi ce

Power System Operation Dept.

Civil & Architectural Engineering Dept.

Hydropower Dept.

Transmission System & Telecommunications Dept.

Thermal Power Dept.

Thermal Power Engineering Dept.

Nuclear Power Management Dept.

Nuclear Power Construction Dept.

Ohma General Management Dept.

Environment & Energy Business Dept.

International Business Management Dept.

International Business Development Dept.

Research & Development Dept.

Name or DesignationNumber of Shares Held(Thousands of Shares)

Percentage of Total Shares Outstanding

(%)

Nippon Life Insurance Company 9,120 5.48

Japan Trustee Services Bank, Ltd. (Trust Account) 8,778 5.27

The Master Trust Bank of Japan, Ltd. (Trust Account) 8,047 4.83

Mizuho Corporate Bank, Ltd. 7,465 4.48

Japan Trustee Services Bank, Ltd. (Trust Account 9) 4,747 2.85

Sumitomo Mitsui Banking Corporation 4,295 2.58

J-POWER Employees Shareholding Association 4,036 2.42

The Bank of Tokyo-Mitsubishi UFJ, Ltd. 3,331 2.00

Fukoku Life Insurance Company 2,750 1.65

The Sumitomo Trust and Banking Co., Ltd. 2,247 1.35

Notes: 1. In addition to above, J-POWER holds 16,516,790 shares. 2. As of April 1, 2012, The Sumitomo Trust and Banking Co., Ltd. (The STB) has changed its trade name to

Sumitomo Mitsui Trust Bank, Limited established through the merger of three trust banks including The STB.Note: Treasury stock of 16,516,790 shares is included in “Individuals and Others.”

Central andLocal Governments

0.00%

FinancialInvestment Firms

1.59%

DomesticCompanies

10.94%

Foreign Companies, etc.

17.12%Financial Institutions

49.91%

Individuals and Others

20.44%

5,000

4,000

3,000

2,000

1,000

0

2008

1 2 3 4 5 6 7 8 9 10 11 12

2009

1 2 3 4 5 6 7 8 9 10 11 12

2010

1 2 3 4 5 6 7 8 9 10 11 12

2011

1 2 3 4 5 6 7 8 9 10 11 12

2012

1 2 3 4 5 6

Stock Price (Yen)

Common Stock Price Range

Major Shareholders (Top 10) Breakdown of Issued Shares by Type of Shareholders

Printed in Japan2012.11