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Japan's 1 Gigawatt Floating Wind Farm Plan Faces 2035 Deadline Doubts
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SCMP Economy4/27/2026Energy1 min readChina

Japan's 1 Gigawatt Floating Wind Farm Plan Faces 2035 Deadline Doubts

Governor Yuriko Koike's ambitious project aims to power Tokyo and Izu Islands, but analysts question technical feasibility

Quick Look

  • Japan plans to build a 1-gigawatt floating wind farm in the Izu Islands to power Tokyo and the islands themselves by 2035, announced by Governor Yuriko Koike at a 2024 climate conference in Azerbaijan.
  • The project would produce equivalent capacity to a nuclear reactor, but faces skepticism over its 2035 timeline, power generation forecasts, and technical demands, especially given the world's largest current floating wind farm in Norway produces just 94.6 megawatts.

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Why It Matters

Japan is pursuing floating wind turbine technology as an alternative to traditional offshore wind farms, aiming to reduce environmental impact on the marine ecosystem while generating significant clean power capacity.

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But the plan, championed by Governor Yuriko Koike, is facing questions over whether it can be delivered by 2035. There are also doubts about the power generation forecast and whether Japan could tackle the technical demands of such a megaproject. Koike first announced the wind farm project at a climate change conference in Azerbaijan in 2024. The plan calls for floating and tethered wind turbines to produce 1 gigawatt of power, equivalent to the capacity of a nuclear reactor, according to the government's plans. In comparison, the world's largest operational floating wind farm, in Norway, generates 94.6 megawatts, according to analysts. Tokyo intends to use floating turbines because they can have less impact on the marine environment during construction than units permanently anchored to the seabed. The plans call for electricity supplied from the turbines to the Izu Islands and Tokyo, around 160km to the north, via submarine transmission cables.

Open Questions

  • Can Japan technically deliver a 1-gigawatt floating wind farm by 2035?
  • Will the power generation forecasts prove accurate?
  • Can the technical demands of such a megaproject be met?

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This article was originally published by SCMP Economy.

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