The World of Coal Ash - affectionately called WOCA - is the premier international conference on the science, application, and sustainability of coal combustion products. WOCA is hosted by the American Coal Ash Association (ACAA) and the University of Kentucky Center for Applied Energy Research (UK CAER). WOCA 2022 will be the 9th biennial meeting.

WOCA 2022 Refund Policy - Any refund requested prior to April 29, 2022 will receive an 80% refund. WOCA will refund 50% of registration fees for any requests made after April 29, 2022.