Soon after man found fire, did he learn that he could harness it for energy and for centuries wood and wood byproducts have been our largest source of renewable fuel. But recently, biomass has been up against some challenges and opposition. Some question just how green the energy is, saying that biomass can damage forests, cause air pollution and create more greenhouse gasses than its saves. But supporters point to a recent EPA announcement saying biomass ‘plays an important role in addressing climate change and enhancing forest management”. Then there is the cost. In the Granite State, the possibility of four small biomass plant not getting their short term energy contracts renewed by PSNH could mean a big hit to the industry and a sign that biomass may have some larger struggles ahead.