Advanced Emissions Solutions, Inc. is a holding company. The Company, through its subsidiaries, provides emissions solutions in power generation and other industries. It is focused on clean coal technology and the associated specialty chemicals, serving the coal-fueled power plant industry. Its subsidiaries include ADA-ES, Inc., BCSI, LLC., Advanced Clean Energy Solutions, LLC (ACES) and Clean Coal Solutions, LLC. (CCS). ADA-ES, Inc. supplies activated carbon injection (ACI) for mercury control, dry sorbent injection (DSI) for acid gases, and technology services and other offerings. BCSI, LLC. is a custom designer and fabricator of engineered emissions control technologies, bulk material handling equipment and bulk storage systems, among others. CCS provides its refined coal (RC) CyClean technology. ACES is focused on supporting and improving its existing products, and identifying, developing and commercializing solutions to advance cleaner energy.