A solar-powered tech venture that is combating food waste in India is among 15 worldwide finalists competing for the GBP 1 million 2023 Earthshot Prize, founded by Britain’s Prince William and dubbed the ‘Eco Oscars’. S4S Technologies, founded in 2013 by seven university friends Nidhi Pant, Vaibhav Tidke, Swapnil Kokte, Ganesh Bhere, Shital Somani, Tushar Gaware and Ashwin Pawade, is shortlisted in the “Earthshot Prize to Build a Waste-Free World” category as the finalists were unveiled by the royal during a visit to New York on Tuesday.