Between next year and 2023 pre-construction work, ongoing detailed design plans and procurement processes will take place on the Boreas scheme, which will consist of between 90 and 156 towering turbines.
The indicative timeline produced by Vattenfall goes onto show that between 2023 and 2025 onshore works will take place on the project, which when completed overall will see a 40-mile cable route stretching from north Norfolk's Happisburgh to an expanded substation at Necton, near Swaffham.
The detailed timeline then shows the next stage would be for offshore work to start in the mid to late 2020s with the first power being generated in that period.
A final timeline section says offshore construction would be due to start in 2025 with cable pulling work taking place inland.
Vattenfall also still needs to secure the actual contract with the government to provide power.
The Swedish company says the Boreas Wind Farm and a second scheme called Vanguard could generate power for up to 3.9 million homes nation-wide.
And Vattenfall country manager Danielle Lane believes of the 67,000 UK offshore wind jobs predicted by 2030 10pc will now be in the East.
The granting of permission and the stepping up of Vattenfall's scheme was welcomed by the newly-elected chairman of the East of England Offshore Wind Industry Cluster, Andrew Harston.
Mr Hartson said: “This is fantastic news for Vattenfall and for the offshore wind supply chain in the East of England.
“Norfolk Boreas and Norfolk Vanguard will create tremendous opportunities both during development as well as generations of jobs in terms of operations and maintenance support and provide huge opportunities for skills development."
A decision has yet to be made on Vattenfall's Norfolk Vanguard wind farm bid.