IN DEPTH: Japan's fixed foundations

The Hibikinada project has a concrete base built for stability in an earthquake

The Hibikinada project has a concrete base built for stability in an earthquake

Pioneering floating wind projects may have stolen the limelight in Japan, but cheaper fixed-foundation offshore developments are likely to be built on a commercial-scale first.

Although the island nation’s narrow continental shelf means its potential for shallow-water projects is limited to a maximum of 23GW, compared to 519GW of floating wind, the cost of energy of the former is expected to be four to six times cheaper — ¥50 ($0.48) per kWh against ¥200-300.

So on top of investing billions of yen in floating pilot schemes, the government is ploughing ¥4bn into two shallow-water demonstration projects that are testing different types of fixed-foundation technologies.

Just off the eastern coast, near Choshi in Chiba prefecture, a concrete gravity base Log in to read complete article.

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