In this issues of Materials Technologies for Energy Storage and Power Generation VI we will look at the advancements made in the field of batteries, solar cells and fuel cells and how scientists have modified their vision and approach in designing alternatives to fossil fuel energy. Many researchers have deviated from the conventional materials and structures used in these clean technologies to produce less expensive and more environmentally-friendly alternatives, while others have tweaked current technology to increase its average efficiency. Some have even gone a step further and have combined two of the three technologies mentioned above.