Volko is Managing Partner at GGNI. He participates in local content and business development projects. Working all across the globe he completed projects in Europe, Mexico, Saudi Arabia, Russia, Israel, Cyprus and Tanzania. Volko is a Fellow of the Energy Delta Institute (EDI), an international business school for energy with a focus on natural gas. As its first Managing Director of EDI, he established the cooperation between the founding partners Gasunie, Shell and Gazprom. With a PhD in econometric, Volko started his career in 1979 as professor at the Econometrics Department of the University of Groningen.