There’s roughly enough wind off the West Coast to power all of the United States. Alla Weinstein is determined to harness as much of it as she can. Weinstein is chief executive officer of Principle Power, a Seattle company that has developed a ballast system that buoys wind turbines so they don’t have to be bolted to the seabed. On Feb. 5, Principle received approval from the U.S. Department of the Interior to build a 30-megawatt floating wind farm off Oregon’s coast, the nation’s first in the Pacific Ocean.