TOKYO -- With Japan recently saying for the first time that renewable energy will be a "major" source of its electricity supply, big international wind power companies are gearing up to get into the potentially lucrative market.
A sea change is underway in one of the world's last unexplored markets

Offshore wind power is generated by a facility operated by Toda in Nagasaki Prefecture. (Courtesy of the company)
TOKYO -- With Japan recently saying for the first time that renewable energy will be a "major" source of its electricity supply, big international wind power companies are gearing up to get into the potentially lucrative market.