Bangladesh endures recurrent water scarcity because of its geographical and climatic qualities. The traditional water supply infrastructure cannot handle the increased demand for potable water. Rainwater collection is a sustainable and ecologically aware alternative to traditional water procurement methods. The combination of this technology and rooftop solar panels is a fresh and inventive approach to solving Bangladesh's concurrent water and energy problems. In Bangladesh, there is little literature on rainwater collection, and scholarly research on the integration of this technology with rooftop solar panels is rare. Rainwater collection can provide a sustainable and viable water source in both urban and rural Bangladesh, according to empirical findings. This is where our hypothesis comes from, which is, combining the traditional solar panels in a v-shaped pattern can turn it into an effective rainwater catchment area, which can increase the harvest amount of rainwater greatly. Performing small scale experiments and analysing the captured data thoroughly, we have found our hypothesis is true, and combining solar panels as a v-shaped catchment area actually increases the harvest of rainwater. This study gives us the empirical proof that using this innovative idea helps significantly in both urban and rural areas for RRWHS along with solar energy conversion.