Planned to be built in the northern half of the East Anglia Offshore Wind Farm development zone, the two wind farms are expected to generate electricity to meet power needs of 2.6 million British households.
Development work of the Norfolk Vanguard wind project has commenced and that of Norfolk Boreas project is scheduled in 2017.
Vattenfall intends to apply for planning permission for the Norfolk Vanguard wind project in 2018 with consent expected in late 2019.
Vattenfall Norfolk Vanguard project manager Ruari Lean said: "Vattenfall wants to work with Norfolk to capture the benefits of offshore wind. There is an opportunity for Norfolk business and securing Norfolk jobs."
The two wind farms, however, will follow the planning process for nationally significant infrastructure projects (NSIP).
Vattenfall Wind head Gunnar Groebler said: "We are very pleased to have been given a green light to develop this northern part of the large East Anglia region.
"It will deliver a substantial increase of electricity for the UK, and will also enable Vattenfall to continue expanding its focus on renewable energy production."
Vattenfalls said that the Norfolk Vanguard project contributes to its aim to have 7GW of installed wind capacity in Northern Europe by 2025 as it shifts its focus to a more sustainable energy business.
Expected to secure financing in 2022 or 2023, the Norfolk Vanguard wind farm is estimated to cost about £5bn to £5.5bn ($7.09bn to $7.79bn), reported Bloomberg New Energy Finance.
Since 2010, Vattenfall and ScottishPower Renewables have been jointly developing wind projects in East Anglia Development Zone.
However, the firms agreed to split it in two in 2015 to develop the projects separately within the zone.
Image: Vattenfalls plans to have 7GW of installed wind capacity in Northern Europe by 2025. Photo: courtesy of xedos4/ FreeDigitalPhotos.net.
