There exist overwhelming – and morally compelling – reasons for shifting to renewable energy (RE), because only that will enable us to timely mitigate dangerous global warming. In addition, several other morally weighty reasons speak in favor of the shift: considerable public health benefits, broader environmental benefits, the potential for sustainable and equitable economic development and equitable energy access, and, finally, long-term energy security. Furthermore, it appears that the transition to RE is economically, technologically, and politically feasible at this point (...) in time. However, there are different possible pathways towards that goal, all of which involve tough choices. Some of these concern different ways of living: Do we have to make a choice between being sustainable and maintaining our current living standard? And if so, how can we balance the value of high living standards against that of a sustainable energy regime? In this chapter, I will not conduct a comprehensive analysis of all available renewable energy technologies, but rather provide a number of examples of tough choices entailed by solar, wind and hydropower. I will also attempt to rebut some of the common misconceptions regarding RE technologies. (shrink)