The project has the potential to create around 2,000 jobs during its construction phase with up to 300 additional jobs supported directly and indirectly throughout its operational phase.
Hornsea Project One will span a huge area of approximately 407 square kilometres, which is over five times the size of the city of Hull. The offshore wind farm will use 7 megawatt (MW) wind turbines, with each one 190 metres tall – larger than the Gherkin building in London.
Siemens has been named preferred supplier for the 7 MW wind turbines and the new Siemens turbine production facilities in Hull will support the project. A £25 million contract has also been awarded to UK infrastructure company Balfour Beatty for the construction of the onshore substation, underlining DONG Energy's positive impact on the UK supply chain.
Brent Cheshire added:
"This is a historic milestone for Hornsea Project One as we are now making a firm and final commitment to invest fully in the project. Almost a decade on from initial planning, and following years of vital development work from a number of different companies in the supply chain, we are now ready to build the world's largest offshore wind farm."
As part of the project, DONG Energy will construct the longest ever offshore wind farm high voltage AC electrical system in the world. It will take the clean electricity produced by the wind turbines, transmit it to shore and then feed it into the national grid. This system includes more than 900 kilometres of cables, enough to stretch from Land's End to John O'Groats.
DONG Energy is the sole owner of Hornsea Project One after acquiring the 66.66% ownership share of SMart Wind in February 2015. DONG Energy also has the project rights to Hornsea Project Two and Hornsea Project Three, which have the potential of 3 GW of offshore wind power capacity in total.
Hornsea Project One is expected to be fully commissioned in 2020.