AbstractSome of the main, general-perspective themes of Dr. Alvin Weinberg’s leadership and long and varied work arethe effect of present and future nuclear energy projects on society, not only in the United States but throughout the worldanalysis, comparison, and combination of various sources of energyextensive multiple use of nuclear energy complexes (so-called NUPLEX, for nuclear complex) for various areas of the worlduse of“Big Technology”and“Big Science”for solving, or helping to solve, political problems.A combined hydro-nuclear-solar project for electric power production is discussed, as well as two other energy-related engineering projects. Some of the projects originated or were inspired by work done at the Oak Ridge National Laboratory under the leadership of Dr. Alvin Weinberg. Also reported are the technical characteristics and interrelationships of the three components of the envisaged hydronuclear-solar project.