ISCC pow er plants use solar-generated heat together with the waste heat from a gas turbine in a steam turbine to generate electricity. In 1999 the German KfW, together with the World Bank decided to promote the ISCC technology with a grant of USD 200 million. However, the World Bank considered halting the grant when opponents to the solar technology presented false thermodynamic calculations, that pretended a reduction of the efficiency. Georg Brakmann succeeded in a debate in Washington, to convince the assembled body of the World Bank and KfW of the correctness of his own thermodynamic calculations and to uncover the error in the calculations of the opponents. As a result the grant was activated, and the ISCC power plants in Morocco and in Egypt were built as designed and engineered by Georg Brakmann.