The American Coal Ash Association, established in 1968, is a nonprofit trade association devoted to recycling the materials created when we burn coal to generate electricity. Our members comprise the world's foremost experts on coal ash (fly ash and bottom ash), and boiler slag, flue gas desulfurization gypsum (FGD or "synthetic" gypsum), and other flue gas materials captured by emissions controls.

Mark your calendars and save these dates.

ACAA Fall 2019 Committee Meetings will be held in Pittsburgh, PA on October 29-30, 2019.

ACAA Winter 2020 Meeting will be held in Scottsdale, AZ on February 4-5, 2020 

Committee Conference Calls Now on Demand

ACAA members can now catch up on recordings of committee conference calls they miss by visiting this page.

World of Coal Ash Proceedings

Click here for the Ash Library.


Welcome ACAA's Newest Members

SMI-PS, Inc., (Associate Member)

P. Cassels Law PLLC (Associate Member)


Please click here for our full member list!