Comments on American Recovery and Reinvestment Act

ADA-ES, Inc.

Michael D. Durham, Ph.D., MBA, President

or

Mark H. McKinnies, Senior VP & CFO

303-734-1727

www.adaes.com

or

Investor Relations Counsel

The Equity Group Inc.

www.theequitygroup.com

Melissa Dixon, 212-836-9613

MDixon@equityny.com

or

Linda Latman, 212-836-9609

LLatman@equityny.com

Logo: http://www.adaes.com

ADA-ES, Inc. (NASDAQ:ADES) announced today that it will issue its financial results for the fourth quarter and year ended December 31, 2008 on Wednesday, March 25, 2009 before the stock market opens.

Dr. Michael Durham, President & CEO and Mark McKinnies, CFO, will conduct a conference call focusing on the financial results, pending clean coal initiatives, progress on its interim AC storage and processing facility, an update on the now under construction AC manufacturing facility along with the status of its debt and equity financing, and other developments at 10:00 a.m. ET on Wednesday, March 25, 2009. Interested parties may participate in the call by dialing 888-787-0460. Please call in 10 minutes before the call is scheduled to begin, and ask for the ADES call (conference ID # 84357151).

The conference call will also be webcast live via the Investor Information section of ADA-ES' website at www.adaes.com. To listen to the live call please go the website at least 15 minutes early to register, download and install any necessary audio software. If you are unable to listen live, the conference call will be archived on the website.

FOURTH QUARTER NON-CASH CHARGES

ADA-ES also announced that there will be approximately $3 million in aggregate non-cash charges taken in the fourth quarter of 2008. Of this amount:

-- $1.6 million relates to a goodwill impairment of its flue gas conditioning ("FGC") operations, due to significant declines in discounted future operating cash flows as a result of regulatory uncertainty, which caused the implied fair values of the FGC segment to be less than book value.

-- $1.2 million relates to the development of our activated carbon ("AC") production and processing facilities; a portion of these costs was deferred prior to the formation of the ADA Carbon Solutions joint venture with Energy Capital Partners I, LP and its affiliated funds. The joint venture is currently constructing the largest AC production facility in North America, which we currently expect to be operational in 2010 and have the capacity to produce between 125 million and 175 million pounds per year.