A 120 MW commercial scale demonstration unit is scheduled to be on-line at a power plant in North Dakota in 2012.

Frank Alix, Powerspan’s chief executive officer, said “CO2 capture technology is a vital climate change mitigation tool for reducing CO2 emissions from coal-fired power plants, the world’s leading source of electricity.

The group of investors includes Tenaska Energy, Inc., AllianceBernstein LP, George Soros and Persimmon Tree Capital LP, and returning investors NGEN Partners LLC, The Tremont Group, Calvert, The Beacon Group, RockPort Capital Partners LP, Fluor Corporation, Angeleno Group, and FirstEnergy Corp.