IIT researchers develop portable system to draw power from Subarnarekha
Times of India | 27 March 2025
Kolkata: Researchers at IIT Kharagpur have developed an "energy harvesting machine" to generate hydroelectric power using the natural flow of the Subarnarekha River. Unlike traditional hydropower systems that require large turbines and deep water, this method can generate power even at 6-10 feet of water depths and with currents as low as 1.8-2 km per hour. It works on vortex-induced vibration technology, making it ideal for small rivers and streams where traditional turbines will be impractical. The machine is also portable.
Over the past six months, the research team, led by Onkar Venkatyalla and Saikat Nandi, used this technology to operate LED bulbs at Keshiary block, Paschim Medinipur. Encouraged by this success, they plan to use the same technology to power speedboats and illuminate the ‘Jungalkanya Setu'.
Since Sept 2024, the team has expanded their work to Bhasraghat and Amilasai, adapting the technology to various water conditions. Through their start-up, Honeyloop Technology Private Limited, the researchers are also employing local workers to install and maintain the system.
With a cost-effective rate of Rs 1.5 lakh per kilowatt, this technology is a viable solution for rural electrification. As the project progresses, it promises to boost local economies, enhance tourism, and provide a sustainable energy model for the future.