 Surilea coal power plant produces coal fly ash and coal bottom ash, coal fava, which can be used as concrete materials due to their low slump value, lower compressive strength, and generally lower flexural strength. Additionally, the carbon footprint of concrete made with coal fava is lower than conventional concrete. This article was authored by Rehmet Hadi Suwarno, Arif Sabo Yuwano, and Arizal.