Feed-in tariffs have been shown to increase the pace of renewable energy development as well as level the playing field for distributed, locally owned generators. U.S. Reps Jay Inslee and Bill Delahunt are trying to replicate the successes of the feed-in tariff in the United States with a new bill in the 2009 Congress. Read more about the policy concept here (Feed-in Tariffs in America) or check out the news story below.
Note: one fallacy in the linked article must be addressed. With state renewable energy mandates, federal tax incentives and accelerated depreciation, state and utility rebates, and utility bidding processes, there is no "free market" in electricity. A feed-in tariff encourages competition among manufacturers to drive price down just as renewable portfolio standards encourage competition to make the utility bids.