An excerpt: A prosperity-compatible energy and climate strategy for the world with an outlook to the year 2050 and a population of ten billion people requires – also proportionally – a multiple of today’s amount of climate-friendly electricity. This will be generated in various ways: old and new methods of using renewable energies, fossil energy sources with CCUS and nuclear energy solutions. Climate-friendly hydrogen (low carbon H2), produced with climate-friendly electricity via electrolysis or (without electrolysis) as so-called blue hydrogen from natural gas in combination with carbon capture and storage (CCUS) or as so-called turquoise hydrogen from natural gas without CCUS, is also needed.