Ishikari Bay New Port Offshore Wind Farm

The Ishikari Bay New Port Offshore Wind Farm is an offshore wind farm off Ishikari Bay, Ishikari, Hokkaido, Japan. As of May 2024, it is, at 112MW, the largest commercial offshore wind farm in Japan.

The project was originally developed by Green Power Investment Corporation (GPI), the Japanese affiliate of Pattern Energy. The project ownership changed upon the sale in May 2023 of GPIto JERA - the joint venture of TEPCO Fuel & Power and Chubu Electric Power - and NTT Anode Energy. The duo reportedly paid more than $US 2bn for GPI.

The project uses the typhoon and seismic certified SG 8.0-167 DD offshore wind turbine from Siemens Gamesa (where DD denotes its gearbox-less direct drive generator). It is the first project in Japan to use 8MW turbines. Due to limited electrical transmission capacity to Honshu, and Hokkaido's relatively small, mainly rural, population, the local Transmission System Operator requires that all major renewable generator directly connect projects to a Battery Energy Storage System (BESS), and so the Ishikari Bay project is paired to a 100MW/180MWh BESS.