The solar power operated paddy winnower was developed and performance was evaluated out at three feed rates 189.99 kg/h, 196.94 kg/h, and 203.94 kg/h for (Bangladesh Rice Research Institute) BRRI dhan29 and 195.99 kg/h, 196.56kg/h and 200.42kg/h for BRRI dhan28 respectively. The paddy winnower was mounted with a 0.25 hp DC motor and connected to a 360-watt photovoltaic solar panel. The highest cleaning efficiency of about 94.6 % was achieved for a feed rate of 209.30kg/h at the main outlet. The highest output capacity of 203.94kg/h was achieved at a feed rate of 225 kg/h. It was observed that the cleaning efficiency for both the paddy varieties decreased by increasing the feed rate.