Deepwater Offshore Wind Incentive Act - Amends the Internal Revenue Code to allow a general business tax credit for the production of energy from a deep water offshore wind facility. Makes such credit equal to the product of 3.04 cents and the kilowatt hours of electricity produced at a facility during a 10-year period and sold by a taxpayer to an unrelated person during the taxable year. Defines "deep water offshore wind facility" as facility that uses wind to produce electricity, operates in 60 meters or more of water, is located within the internal or territorial waters of the United States, and is placed in service after the enactment of this Act and before January 1, 2030.