Ms Harber said: “It’s important for the future. It’s the biggest thing around.”
The factory will manufacture 377ft (115m) blades for the windfarm, which will be built about 20 miles (about 32km) out to sea.
Mr Davidson described the deal as a “magnificent order” and said the factory was “acting as a catalyst for economic growth and green jobs across the region”.
“We’re really active in trying to get future orders so we can continue to support the growth in offshore wind and making that product here in Hull,” he added.
The deal comes after Scottish Power announced plans to double its investment in the UK, from £12bn to £24bn, by 2028.
East Anglia TWO is one of three windfarms being developed by the company off the coast of Norfolk and Suffolk. When completed, it is expected they will provide enough green electricity to power the equivalent of more than three million homes.
Keith Anderson, chief executive of Scottish Power, said: “Getting more projects like East Anglia TWO off the blocks quicker will turbo-boost the UK’s supply chain, giving companies like Siemens Gamesa the confidence to invest in facilities like this blade factory in Hull.”
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