The Dongtain IV projet is currently being built; the construction of Dongtai V is scheduled to begin in 2019 . Subject to the signing of the final contracts, both partners will build and operate a total installed capacity of 500 MW, which will be gradually commissioned by 2021. With 3 8 GW of offshore wind capacity already in operation, China is a promising market which should continue to grow quickly and account for nearly one half of the global fleet by 2030 with 50 GW in operation .