Environmentally Responsible Windpower Act of 2005 - States that an onshore and above-water wind turbine project must file with the Federal Energy Regulatory Commission (FERC) its Local Approval Authorization (a resolution of approval or denial from the local governing body and local senior executive) prior to FERC issuance of its Exempt-Wholesale Generator Status, Market-Based Rate Authority, or Qualified Facility rate schedule. Prohibits FERC from issuing any of them to a wind project if the local authorities deny the siting of the project.