But while the future of the sector is promising, a number of long-standing issues continue to hang over the country’s ambitions.

At a seminar hosted by the Ashikaga Institute of Technology in late June, the New Energy and Industrial Technology Development Organisation (NEDO) quietly gave the official go-ahead to a 7.4MW project off the southwestern island of Kyushu.

Hitachi Zosen and French offshore wind start-up Ideol first revealed their plans last summer.