With the help of complex computer simulations Siemens experts developed a special blade configuration for gas turbines with ideal stream characteristics. The use of innovative materials and cooling systems which make the gas turbine exceptionally heat-resistant and allow higher firing temperatures are also necessary to generate as much energy as possible with a preferably small use of primary energy and by doing so reducing the CO2 emissions. The picture shows the open rotor and combustion chamber of an SGT5-4000F gas turbine.