Innovative solutions are critical in densely populated cities like Dhaka, where land scarcity limits agriculture and energy generation opportunities. This paper explores the integration of Agrivoltaic and aquaponic systems on urban rooftops to address these challenges. Utilizing rooftop solar panels (500W * 8) to generate approximately 4000W of renewable energy reduces urban heat island effects while enhancing air quality. In tandem, aquaponics—a closed-loop system combining fish farming and soilless plant cultivation—leverages fish waste as plant nutrients, promoting sustainable agriculture and food security. Additionally, rainwater harvesting is incorporated for solar panel cleaning and cooling, contributing to water conservation in areas with limited water resources. Integrating these systems optimizes space, conserves resources, and reduces carbon emissions, making it an ideal model for urban sustainability. This case study features cultivating plants like basil, strawberries, and lemongrass in hydroponic trays alongside bitter melon and bottle gourd in custom grow beds. Data from the system, including energy generation before and after panel cleaning and pH balance in aquaponic water, are analyzed to demonstrate the system's efficiency. This dual-purpose setup promotes sustainable living through a harmonious blend of energy generation, water conservation, and urban farming.