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Clean energy from rain? Scientists generate electricity from falling droplets

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By illuminem briefings

· 2 min read


illuminem summarises for you the essential news of the day. Read the full piece on Euronews or enjoy below:

🗞️ Driving the news: Scientists from the National University of Singapore have developed a method to generate electricity from falling water droplets, successfully powering 12 LED lights
Using a setup that mimics rain, the team created a “plug flow” pattern in a vertical tube, which enables charge separation and electricity harvesting with over 10% energy conversion efficiency

🔭 The context: While hydropower traditionally relies on large volumes of water to drive turbines, this innovation targets small-scale energy generation by exploiting static-like charges that form when water interacts with surfaces
The research, published in ACS Central Science, builds on the principle of triboelectricity, where contact between different materials causes charge exchange — a concept familiar from rubbing a balloon on skin

🌍 Why it matters for the planet: This breakthrough introduces a potential new method for generating clean energy in urban environments, especially on rooftops where rainfall is abundant
Unlike traditional hydroelectric systems, the design is compact, scalable, and not dependent on flowing rivers, offering an accessible renewable energy solution in water-scarce or densely populated regions

⏭️ What's next: Further testing will explore the efficiency of this technology under natural rainfall conditions and optimize the system for real-world application
If proven viable, it could be integrated into buildings or urban infrastructure as a decentralized power source, contributing to energy diversification and resilience, especially in rainy climates

💬 One quote: “This plug flow pattern could allow rain energy to be harvested for generating clean and renewable electricity,” - Siowling Soh, lead researcher

📈 One stat: The plug flow system converted over 10% of the kinetic energy from falling droplets into usable electricity

See on illuminem's Data Hub™ the sustainability performance of Statkraft and its peers Brookfield Infrastructure Partners, and Orsted

Click for more news covering the latest on renewable energy

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illuminem's editorial team, providing you with concise summaries of the most important sustainability news of the day. Follow us on Linkedin, Twitter​ & Instagram

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