Desmoines Register: Iowa energy policymakers know that building the nation’s second-largest wind generating capacity was relatively easy compared with the next step of figuring how to transport surplus electricity to Eastern cities. One thing appears certain: If plans don’t gel relatively soon on ways to move wind energy across state lines, the slowdown in building wind farms in Iowa will turn into a complete halt. “Absolutely, Iowa will see wind energy development stopped if transmission issues aren’t solved,”…