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.

World Of Coal Ash 2019 will be held in St. Louis, MO on May 13-16, 2019.

Committee Conference Calls Now on Demand

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

ACAA 2019 Winter Membership Meeting

Click here for the meeting presentations.


Welcome ACAA's Newest Members

SMI-PS, Inc., (Associate Member)

P. Cassels Law PLLC (Associate Member)


Please click here for our full member list!