Hydro Review, July 2014, by Luke Rose and Rebecca K. Blood.
http://www.hydroworld.com/articles/hr/print/volume-33/issue-6/articles/legislation-may-usher-in-a-new-golden-age-for-u-s-hydropower.html

"With its revival for fiscal year 2014, the Hydroelectric Production Incentives Program shows promise as a new federal revenue stream for hydro facilities."