Market stage
Active market with a track record of projects and visible policy support.
Japan
Japan offshore wind overview.
Japan is an established offshore wind market with early commercial projects operating and a structured promotion-zone auction system. Port-side and fixed-bottom projects lead the near-term pipeline, while floating wind is essential for unlocking deeper waters around much of the coastline. Cost pressure and auction reform are now central issues for the next phase of delivery.Asia Pacific125m people
At a Glance
Installed offshore wind
200 MW National target
30GW by 2030Currently 0.7% achievedOperational projects
11 Pipeline capacity
50.6 GWPlanned, consented and in buildRenewables share
42%of installed capacityOffshore wind share
0.1%of installed capacityCapacity growth since 2020
3% Fastest-growing technology since 2020
Solar PV+20.3 GWMarket Readiness
Consenting window
Typical offshore wind consenting timescale: 38-77 months.
Electricity system
Liberalised market post-2016 reform. Multiple regional utilities (TEPCO, Kansai, Chubu etc.) own generation and distribution. OCCTO (Organisation for Cross-regional Coordination of Transmission Operators) coordinates transmission. METI and MLIT jointly manage offshore wind via Offshore Wind Act (2018, amended 2025 for EEZ). FIT/FIP support via Agency for Natural Resources and Energy. Environmental assessment 4-5 years per METI guidance. Fisheries council coordination mandatory for each Promotion Zone.
Grid context
Grid connection for offshore wind in Japan is managed by regional TSOs under the Japan Electric Power Exchange (JEPX) framework, with the Promotion Area designation process under the Offshore Wind Promotion Act including grid capacity assessment as a key selection criterion. Connection costs and onshore reinforcement requirements are a significant factor in Japanese project economics given the fragmented regional grid structure. Grid capacity at potential connection points has been a published constraint in several designated promotion areas.
Largest Projects
Planned
4.1 GWPlanned
3 GWPlanned
1.8 GWPlanned
1.5 GWPlanned
1.5 GWAuthorities
Policy
Ministry of Economy Trade and IndustryMETIRegulator
Agency for Natural Resources and EnergyANRESeabed Leasing
METI (Promoted Sea Areas designation)METIGrid Operator
OCCTO (Organisation for Cross-regional Coordination of Transmission Operators)OCCTOEnvironment
Ministry of EnvironmentMOEMaritime Safety
Japan Coast GuardJCGPermitting
Ministry of Land Infrastructure Transport and TourismMLIT