Vopak invests in storage capacity for waste based feedstocks in the Port of Rotterdam Vopak invests in storage capacity for waste based feedstocks in the Port of Rotterdam Rotterdam, the Netherlands, 17 February 2021 Vopak is investing in the Port of Rotterdam for the storage of waste based feedstocks for the production of biofuels such as biodiesel and bio-jet-fuel. The market for energy from renewable sources in Europe is rising, also as a result of the Renewable Energy Directive II of the European Union. In total 16 new tanks with a combined capacity of 64.000 cbm will be built at Vopak Terminal Vlaardingen. The renewable feedstocks that can be stored in the new tanks are waste materials, such as used cooking oil and tallow.