When you have been involved in this industry for five decades, it’s hard to look at where solar energy is today -- compared to where it was in the 1970s -- and not be thankful.
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.