A crop residue gasification based power generation system was developed at SardarPatel Renewable Energy Research Institute (SPRERI). The performance of the gasifier alone and the whole power generation system was evaluated using selected crop residues briquettes as fuel. Short duration experiments were carried out using selected crop residues briquettes of 40 mm, 55 mm, 57 mm and 60 mm diameters. A continuous 50h operation of the system was also carried outto understand the effect of various operating condition on gasification process. The gasifier performance was found most acceptable with 40 mm diameter briquettes.