This research investigates the application of solar energy in water desalination systems as a sustainable alternative to conventional fossil fuel-based methods. The proposed system integrates renewable energy with water purification to address freshwater scarcity and energy depletion challenges. Utilizing a water level sensor, the system monitors water from multiple sources, including a storage tank, deep tube well, and harvested rainwater. A reverse osmosis (RO) pump powered by solar energy filters the water, which is then stored in a main tank for safe drinking purposes. The system operates in hybrid mode—drawing power from solar energy primarily, with an automatic switch to grid power when solar availability is insufficient. Real-time data on energy availability and water status are displayed and stored in Google Sheets for monitoring and analysis. This integrated solar-powered desalination system demonstrates a cost-effective and environmentally friendly approach to sustainable water purification in remote or resource-limited areas.