India, March 17 -- At a time when uncertainty around the delivery of liquefied petroleum gas (LPG) cylinders is causing consumers sleepless nights, a Pune-based engineer's innovation is drawing renewed attention as a sustainable alternative to cooking gas. Named 'Vaayu', the compact household biogas system developed by IIT Mumbai alumnus Priyadarshan Sahasrabuddhe, converts kitchen waste into methane gas for cooking purposes. With the uncertainty around LPG supply in recent weeks, Sahasrabuddhe says he has seen a surge in 'Vaayu' enquiries. "I began getting calls almost every two minutes after the LPG crisis started. In just a few days, more than 500 people contacted us asking about installations," he said.

'Vaayu' uses organic waste gen...