Researchers at the National University of Singapore have unveiled a novel technique to harness electricity from falling rain. By channeling rain-like droplets through narrow, conductive tubes, they achieved a specific flow pattern known as “plug flow,” where water segments are separated by air pockets.

This configuration significantly enhances charge separation compared to continuous water flow, resulting in a substantial increase in energy generation. In laboratory tests, this method produced enough electricity to power 12 LED lightbulbs continuously for 20 seconds using just four 32-centimeter-long tubes .   

The simplicity and scalability of this approach suggest potential applications in urban environments, particularly in regions with frequent rainfall.

Installing arrays of these tubes on rooftops or near waterfalls could contribute to decentralized, renewable energy solutions. While the current output is modest, further research and development may enhance efficiency, offering a sustainable alternative to traditional hydropower systems that require significant infrastructure.

Source: Science News