Tsugaru Offshore Energy's 615 MW Aomori project enters a market that has missed every build target so far
Japan's newest offshore wind proposal lands in a sector where GWEC forecasts just 3.5 GW online by 2030 against a 10 GW official target.
Tsugaru Offshore Energy has filed plans for a 615 MW offshore wind project off Tsugaru City and Ajigasawa Town in Aomori Prefecture, targeting full commercialization in fiscal 2027. The proposal arrives in a Japanese market that has commissioned just over 0.5 GW of offshore wind to date, and where the gap between official ambition and actual delivery keeps widening.5,1
Japan's offshore wind targets stand at 10 GW by 2030 and 30–45 GW by 2040, but the Global Wind Energy Council forecasts only 3.5 GW online by 2030 and 8.4 GW by 2035. The Tsugaru project alone represents nearly a fifth of everything GWEC expects Japan to build in the next four years. Anyone pricing Japanese power or underwriting the country's energy transition needs to account for that arithmetic.1
The delivery shortfall is not a forecasting artifact. Japan ended 2025 with 6.43 GW of total installed wind capacity, including 1.28 GW in Hokkaido, and that growth came almost entirely from onshore projects. Offshore capacity only crossed the 0.5 GW threshold in 2026 following commissioning of the 220 MW Hibikinada and 16.8 MW Goto floating wind projects.1
Auction design and project development challenges have been the binding constraint, according to GWEC's assessment. The sector has also lost a major foreign participant. Equinor said it is ending its offshore wind business in Japan and will close its Tokyo office by the end of the year, part of the Norwegian major's realignment away from non-oil and gas activities.1,2
Still, capital continues to flow into Japanese offshore wind via different channels. JERA Nex bp, the 50:50 offshore wind joint venture between JERA and BP, completed the purchase of Sumitomo Corp's stakes in two Belgian offshore wind farms with combined capacity of 384 MW. That deal, involving the 165 MW Nobelwind array commissioned in 2017, shows Japanese capital seeking offshore wind returns outside the domestic market.4
The Belgian acquisition and the Aomori proposal point in opposite directions. JERA Nex bp bought into operationally proven North Sea assets with established revenue. Tsugaru Offshore Energy is asking the Japanese system to deliver something it has not yet managed at scale: moving a project from announcement to grid connection within a defined window.4,5
Global wind markets are expanding rapidly elsewhere. Total global wind capacity hit a record 165 GW of new installations in 2025, up 40% year on year, led by China, the US and India, with 28,395 wind turbines now installed across 57 countries. Japan's contribution to that build-out remains marginal.1
Commodity prices keep competing thermal generation expensive. JKM Asian LNG stood at $24.02/MMBtu on Monday (2026-09-07), and TTF gas was at €71.95/MWh on the same morning. Those levels should theoretically support the case for domestic renewables, but they also inflate the steel, copper and vessel costs that offshore wind developers must absorb.1
Japan's auction framework has drawn repeated criticism for slowing the pipeline. GWEC attributes the deployment gap to "auction-design and project challenges" that emerged after the initial round — a diplomatic formulation for a mechanism that has not produced the volume the government promised.1
Equinor's exit compounds the problem. When a major European offshore wind developer concludes that Japan is not worth the effort despite the country's 30–45 GW target, it signals something about bankability and risk allocation that domestic project sponsors are not publicly addressing.2,1
Tsugaru Offshore Energy's fiscal 2027 commercialization target looks ambitious against recent precedent. The offshore wind project off Oga City, Katagami City and Akita City in Akita Prefecture, which received a certificate of conformity from Bureau Veritas Japan, targets commercial operations for June 2028. A comparable Japanese offshore project is running roughly two years behind Tsugaru's stated timeline.3,5
Japanese firms are meanwhile committing large sums to offshore wind outside their home market. Plans to invest up to £9 billion in 5.9 GW of UK floating offshore wind projects, including Ossian, Green Volt and Erebus, suggest domestic developers see better risk-adjusted returns in the North Sea than at home.1
The next signal worth tracking is the award schedule for Japan's upcoming auction round and whether grid connection slots are actually available in Aomori. If fiscal 2027 passes without steel in the water, the project joins a pattern where Japan's offshore wind targets function as planning documents rather than delivery commitments.5,1