This chapter outlines a system that uses both photovoltaic (PV) and wind energy sources to regulate voltage and ensure a stable supply. Combining these two renewable energy sources allows for more reliable and efficient voltage regulation using Arduino-UNO. Voltage regulation is an important aspect of power systems to ensure that the voltage delivered to the load is within an acceptable range. When the voltage drops below the desired value, the system matches the demand and maintains a constant output voltage of 45 V. Excess voltage from the boost converter is switched to the battery via a relay and stored. Solar panels generate electricity primarily during daylight hours, while wind turbines are more efficient at higher wind speeds. This ensures a more stable and reliable power supply throughout the day. The system reduces dependence on fossil fuels and minimizes greenhouse gas emissions by using renewable energy sources such as solar power and wind power. In summary, the proposed PV-WIND system provides a viable solution for voltage regulation by utilizing PV and wind energy to maintain a constant voltage supply.