🇯🇵 Japan Electrical Grid

Reference profile of the Japan electricity grid — grid frequency, synchronous area, and the main transmission & distribution operators with their operating voltages. Compiled from the TransformerPath worldwide grid census.

Region East AsiaFrequency 50/60 HzSynchronous area Two sync areasOperators 2

Grid operators

OCCTO + 10 regional TSOsEast 50 Hz / West 60 Hz, bridged by frequency-converter stations (~2.1 GW)500 kVSite →

TEPCO Power GridLargest regional TSO (Tokyo, 50 Hz)500 kVSite →

Related TransformerPath

Japan market hub Japan manufacturers (9)

Transformer-relevant projects

Hokkaido–Honshu HVDC interconnection (Kitahon) Pole 1 renewal · ±250 kV HVDC · awarded
Hokkaido–Honshu 2 GW HVDC interconnection (Japan Sea route) · · planned
Miyagi Central (Miyagi Chuo) 500 kV substation reinforcement · 500 kV · construction

Reference profile from the TransformerPath grid census; operator, voltage and frequency data are as recorded and may change. Report a correction.

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