China opened the Gulf of Tonkin for offshore wind development, after an agreement with the city of Beihai brought a major new area off the nation’s southern coast into play for more than 5GW of potential development.

A framework agreement between state-owned energy group China Guodian and municipal authorities in Behai – a harbor city in China's southern Guangxi Zhuang Autonomous Region – saw the former commit to 90bn yuan ($12.6bn)