On Tuesday, Sept. 29 at 7 p.m. Peter Cabana will give a lecture, Wind Economics 101, at the Vineyard Haven library. The lecture will begin with the basics of wind generated electricity and then follow up with what has happened in Europe, the opportunities available to the United States and how Massachusetts is positioned to lead the nation. Mr. Cabana will leave plenty of time to discuss the Massachusetts Oceans Management Plan, which outlines areas to build large-scale commercial wind farms; and the Wind Energy Siting Reform Act, which would streamline approval of land-based wind turbines around the state. These are two new legislative initiatives that would put the Vineyard on the front line of an ambitious state plan to build large-scale wind farms on land and at sea.