Advanced Emissions Solutions, Inc. is a holding company, which engages in the provision of environmental and emission control equipment to power generation industry. It operates through the Refined Coal and Advanced Purification Technologies. The Refined Coal segment includes Tinuum Group, Tinuum Services, and GWN Manager. The Advanced Purification Technologies segment refers to the sale of Activated Carbon Injection and Dry Sorbent Injection equipment systems, chemical sales, consulting services, and other sales related to the reduction of emissions in the coal-fired electric generation process and the electric utility industry. The company was founded in 1996 and is headquartered in Greenwood Village, CO.