China’s State Power Investment Corp (SPIC) has secured final approvals needed to start work on a 6GW onshore wind project in Inner Mongolia that it says will be the world’s largest, at a cost of 42.5bn yuan ($6.2bn).

“This is so far the biggest single onshore wind base in the world,” said SPIC in a statement that does not set a schedule for completing the project or specify which turbines will be used.

SPIC said the Ulanqab wind project will sell power with no subsidies, making it the first Chinese mega-project embarked upon on a zero-subsidy basis.