Well not the end but could be a big Change!
http://www.technewsworld.com/story/Power-Plant-One-Small-Leaf-Could-Electrify-an-Entire-Home-72156.html?wlc=1301359069&wlc=1301368930&wlc=1301370066
"It's really cool stuff -- they're taking a solar cell and turning it into a battery,"
Kinda cool....like they are working on artificial bees too!