The Danish developer announced in October that Brookfield would acquire the shares in Hornsea 1, Hornsea 2, Walney Extension, and Burbo Bank Extension.
Altogether the transaction gives Brookfield a stake in 3.5GW of wind farms currently under long term contracts for difference.
The transaction is worth some £1.745b.
Orsted retains a 37.55 % ownership interest in the four assets.