Here’s an interesting story about a community college that cut its electric bill by 90%, not to mention greenhouse gas emissions by 20%, when it started heating the school by burning wood chips.  Some other local government agencies are converting to "biomass energy plants" as well. 

Tim Maker, executive director of the nonprofit Biomass Energy
Resource Center in Montpelier, Vt., said about 30 schools in his state
are heated with woodchips. He said biomass heating plants are popular
in Montana, Nevada, Utah, North Dakota and Idaho, where forests provide
a renewable supply of wood.

"Biomass is a commonsense approach to
getting fuel," Maker said. "When you look out the window, chances are
you’ll see trees. So you start asking if your fuel is going to come
from Iraq or that hillside out your window?"

Kind of puts the tree-huggers in a quandary doesn’t it?