Wind Power Tax Incentives Act of 2005 - Amends the Internal Revenue Code to permit: (1) individual taxpayers with adjusted gross incomes (taxable incomes in the case of corporate taxpayers) of $1 million or less to offset passive activity losses and credits from energy-producing wind facilities against regular income; and (2) tax-exempt cooperative organizations (including farmers' cooperatives) to apportion pro rata among their shareholders tax credits received for investment in energy-producing wind facilities.