The integration of renewable energy systems into domestic applications is rapidly growing due to the depletion of fossil fuels that power most conventional plants. This paper proposes a Dual Input Single Output (DISO) DC-DC converter topology, where the output voltage ratio (5:5 and 7:3) is dynamically managed according to the input energy source. A key advantage of this topology is the adjustable output of each input DC source based on the produced input energy and the required output energy. The proposed system has been implemented and validated using MATLAB simulation, demonstrating effective power distribution from two 12V DC input sources. The simulations confirm the converter’s capability to maintain a consistent 12V output under varying duty cycles, ensuring reliable performance across different scenarios. This converter topology enhances the efficiency and reliability of renewable energy systems by managing the charging and discharging cycles of batteries and ensuring redundancy of energy sources. For instance, during periods of low solar output such as nighttime or cloudy days, the system can rely on battery power to maintain a continuous power supply. Additionally, the flexibility in adjusting the input voltage ratio allows for optimal power consumption from renewable sources, thereby reducing dependence on non- renewable energy. This makes the DISO converter a cost-effective and sustainable solution for domestic energy applications.