Kayla Edda Edwin SK Convent (M) Kajang
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Project Title: The Smart Hybrid Green Garden: Multi-Source Clean Energy with Storage Innovation
Presenters: Aafiya Siddiqah Binti Fairus Khan & Kayla Edda Edwin
Institution: SK Convent (M) Kajang, Malaysia
Modern society depends heavily on consistent electrical power, yet traditional fossil fuel reliance damages the environment. While renewable alternatives like solar and wind energy offer clean pathways, they are fundamentally intermittent—solar panels cannot generate power without sunlight, and wind turbines remain idle without sufficient air currents. This unpredictability creates an unstable supply chain, making it difficult to maintain steady electricity using only a single renewable resource.
To address this inconsistency, this project introduces a miniature hybrid energy system that combines multiple clean energy sources in parallel:
Solar Harvesting: A small solar panel captures ambient light and converts it to electricity.
Wind Harvesting: Toy windmills attached to miniature DC motors act as generators, converting kinetic wind energy into electrical power.
Storage Solution: A $1000\mu\text{F}$ capacitor is integrated into the parallel circuit to serve as an "electric bank," accumulating excess energy produced during peak generation.
Circuit Protection: Diodes are strategically placed within the system to prevent electrical backflow, ensuring currents travel safely in a single direction.
Comparative testing was conducted across three distinct setups to analyze system efficiency and longevity:
Wind Energy Only: Produced a fluctuating, flickering output that ceased as soon as the wind source stopped.
Solar Energy Only: Offered a steadier flow of power but was immediately cut off when the light source was obstructed.
Hybrid System with Capacitor: Produced the brightest, most stable LED illumination. Most notably, when environmental inputs were intentionally interrupted, the capacitor gradually discharged its stored energy, maintaining consistent power to the LED for an extended duration.
The hybrid model successfully demonstrates that pairing diverse renewable inputs with an integrated storage mechanism delivers a more reliable, resilient, and stable power output than independent single-source systems. Built using affordable, recycled, and highly accessible components, this low-cost innovation aligns with UN Sustainable Development Goals (SDG) 7 (Affordable and Clean Energy) and 13 (Climate Action). This scalable design holds strong potential for larger applications in homes, schools, and remote rural communities looking to reduce their dependence on non-renewable energy grids.
