1. TEPCO Power Grid, Inc.
2. Kansai Transmission & Distribution, Inc.
3. Chubu Electric Power Grid Co., Inc.
4. Shikoku Electric Power Transmission & Distribution Co., Inc.
5. Hokkaido Electric Power Network, Inc.
6. Toshiba Energy Systems & Solutions Corp.
7. Hitachi, Ltd.
8. Mitsubishi Electric Corp.