Connect with over 1,000 potential customers and colleagues at the largest ash-related event in the world — World of Coal Ash 2026! WOCA is an international conference organized by the American Coal Ash Association (ACAA) and the University of Kentucky Center for Applied Energy Research (CAER). The 2026 conference is the 11th joint biennial meeting with a focus on the science, applications and sustainability of worldwide coal combustion products (CCPs) as well as gasification products.