I was forced during the 1990's to abandon some 15 small hydro projects in various stages of the permitting process at a loss of $ millions. (wattsupwiththat.com)
About half of that is wind energy, and the rest is comprised of small hydro projects, biomass, and solar. (microgridknowledge.com)
Large hydro projects are projected to generate 2 billion carbon credits by 2020, which could be a lot of hot air. (internationalrivers.org)