Starting Friday, beverage containers will be worth 10 cents when returned empty to automated machines, a system the government considers one of Portugal's largest environmental projects. Known as 'Volta', the Deposit and Refund System (DRS) aims to boost recycling rates for single-use plastic and metal bottles by providing a financial incentive. While the system is launching with 2,500 machines and thousands of collection points, consumers are advised that only containers marked with the 'Volta' symbol will be accepted during the initial transition phase.