Hokkaido Electric Power Co., Inc.
Tohoku Electric Power Co., Inc.
Tokyo Electric Power Co., Inc.
Chubu Electric Power Co., Inc.
Hokuriku Electric Power Co., Inc.
The Kansai Electric Power Co., Inc.
The Chugoku Electric Power Co., Inc.
Shikoku Electric Power Co., Inc.
Kyushu Electric Power Co., Inc.
The Okinawa Electric Power Co., Inc.