Switchgrass is one of the perennial grasses with scientific name Panicum virgatum. It is an ideal biomass energy source because of its moderate to high productivity, stand longevity, high moisture and nutrient use efficiency and adaptability to most agricultural regions in North America. Switchgrass produced 540% more renewable than nonrenewable energy consumed. Switchgrass can be densified into pelletized biofuel and used for space heating purpose with a close couple gasifier pellet stove.
Biomass is the from of firewood, agriculture residue and cow dung cake is consumed to meet energy requirements. Biomass as fuel is used in domestic cooking, hot water generation (estimated at 250 million tones annually) rural and urban small and unorganized industries (estimated at 25 million tones annually in India).