Iowa is one of the best solar markets in the country. It's residents are strong believers in renewable energy and, by all accounts, are educated early adopters of solar.
One thing that hinders solar in Iowa, however, is the vast difference in interconnections between co-ops and investor owned utilities. Some co-ops buy back energy under a true Net Metering agreement, which pays or credits the customer at the retail rate. Others, however, attempt to stifle solar projects by installing smart-grid meters and not giving their customers any compensation for the solar electricity that is sent back out to the grid.
Today, a great article was published in Midwest Energy News on this topic.