George P. Shultz served as U.S. Secretary of State, Treasury and Labor under two GOP Presidents. Today, Shultz is co-chair of Stanford University’s Hoover Institution task force on energy policy.
Renewable Energy: An Overview - Biomass
The most important issue facing the goal of extensive biomass production in Arizona is the availability of land and water for such purposes. While land availability does not appear to be a problem in this state, water availability is.
More on bioenergy here.