Reinventing the energy system.

Christopher Flavin stresses about the transition in the demand of energy throughout history to the present time. Today more and more actions are being taken to switch to renewable energy sources due to peaks in current energy sources and climate change. Furthermore, societal changing needs and development of new technologies are contributing to the search for alternatives towards more efficient energy sources. Flavin gives examples of several renewable energy sources such as solar energy, fuel cell, and modern wind turbines. Energy should be consumed efficiently while respecting the natural world that provides it.