Avangrid Renewables has won the 1.5GW North Carolina offshore wind lease auction with a high bid of $9,066,650.
Statoil, Wind Future and WPD Offshore Alpha also competed in the sale, which lasted 17 rounds.
One bidder dropped out after the 11th round when the price reached $4.6m while a second quit after the 14th round when bids hit $6.8m.
Iberdrola company Avangrid is active in onshore wind projects in the US however this sale marks the company's first foray in the country's offshore sector.
Secretary of the Interior Ryan Zinke said: "The success of this lease sale reflects the continued interest of coastal communities to develop their offshore energy resources.
“This is a big win for collaborative efforts with state, local, and private sector partners."
Enbridge, PNE Wind, Northland Power, Shell and Apex Clean Energy were also eligible to bid on the 49,000-hectare Kitty Hawk site but did not participate in the sale.
The Bureau of Ocean Energy Management has raised more than $58m in six competitive lease sales so far, including a record-breaking $42.5m paid by Statoil for the 1GW New York lease area.