Over at Climate Progress, Stephen Lacey recently asked why there isn't more development of micro hydro in the U.S., given its potential to provide more than 30,000 low-cost megawatts of power to U.S. (and bipartisan political support).

We can't answer that question any better than Stephen, but we can provide a good illustration of that potential, replicating a map from our 2010 report Energy Self-Reliant States (click here for a larger version):

New Micro Hydro Power Potential (Percent of State Electricity Sales)