Green Builder, Jan. 2014.
http://content.yudu.com/A2iil1/GreenBuilderJan2014/resources/index.htm (Scroll to page 11.)

"With help from our friends at Sustainia, here's a list of 25 of the most powerful technologies and ideas that will soon change our world in profound ways. From gravity powered LEDs to wireless car chargers, these are the good ideas that (we believe) won't go away." Close to half are energy related or have energy implications.