Ishikari Bay Offshore Wind Farm Operational at 112 MW, Reduced from Initial 520 MW Plan
The Ishikari Bay Offshore Wind Farm in Hokkaido, Japan, commenced operations in January 2024 with a capacity of 112 MW, significantly less than the originally proposed 520 MW. This project is part of a broader strategy to support the growing chip manufacturing sector in the region, aligning with Japan's expanding semiconductor industry.
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The Ishikari Bay Offshore Wind Farm, with a capacity of 112 MW, began commercial operations in January 2024. Initially proposed as a 520 MW project by JERA in 2020, the facility now includes 14 Siemens Gamesa turbines and a 180 MWh battery system, supplying power under a 20-year agreement with Hokkaido Electric Power Network.
In September 2025, ownership expanded to include Hokkaido Electric Power and Tohoku Electric Power, reflecting the demand for stable energy in Hokkaido's chip sector. The project construction started in October 2022, and it is ranked as Japan's largest operational offshore wind farm at commissioning. The broader implications include enhanced energy security for regional semiconductor manufacturing and potential future offshore capacity expansions.
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