Nowadays, gasification is one of the progressive methods of energy production (heat and power) from biomass resources. This method is more efficient than direct combustion of the biomass, because the produced gas (syngas) can be combusted at higher temperature or maybe used in other processes to generate further energy carriers. In this study, the feasibility of syngas utilization for power generation is considered. The distribution of biomass resources plays a significant role on locating proper places for establishment of gasification power plants. The key parameters which have a great influence on selecting a specific gasification technology in any region are the amount and type of biomass resources. Here, the area under cultivation of various agricultural and orchard products, and wood farming have been estimated from the official database of the agricultural ministry of Iran through which, the amounts of agricultural residues, orchard pruning and short rotation coppices were calculated around 33.4 million tons in 2009. Proximate and ultimate analyses of the most common biomass resources in Iran including ash, moisture, volatile matter content, components and the heating value were carried out in this research. So, by means of the obtained information on heating values, it was capable to approximate the total potential of the biomass energy around 167 TWh. And finally by picking a proper coefficient for usage of biomass residues and a moderate performance for regular gasification plants, the applicable and feasible potential of biomass resources was derived for whole the country around 51 TWh.