Christian Gelleri is a PhD candidate in economics at the University of Siegen in Germany and a leading innovator in the complementary currency space. He is the creator of the Chiemgauer, a regional currency in Bavaria, Germany which is intended to increase local employment, support local culture and make the local food supply more resilient. The currency incorporates Silvio Gesell’s proposal of demurrage, or carrying costs, to incentivize steady circulation of money. Christian is a former Waldorf School teacher, and he created the Chiemgauer in 2003 as a project with his students. Now, over 20 years later, it is one of the most successful and sustained complementary currency projects in the world, with an annual turnover of over 7 million Euros.