Electric power generation contributes about 1/3 of all U.S. carbon emissions. Southwest Research Institute and its partners are developing advanced power generation utilizing supercritical carbon dioxide (sCO₂) instead of steam to improve efficiencies of both traditional fossil powered plants as well as concentrating solar power (CSP) plants. A new generation concept direct fires the fuel with oxygen (so called oxy-fuel combustion) in the turbine, similar to a traditional gas turbine, but utilizing the CO₂ instead of air as the working fluid and does so at much higher pressures. This highly recuperated cycle offers state-of-the-art efficiencies (approaching 60%), while capturing 98% of the CO₂ with no additional power penalty associated with traditional capture schemes. This talk will discuss the development of a 300 MWe oxy-fuel turbine, as well as combustion, heat transfer, and material test rigs to support its development.