One Million Dollar Prize for Next Generation of Power Inverters

Google recently announced their so-called Little Box Challenge, a $1 million prize to develop the next generation of power inverters. If you want to know what power inverter is, here is the basics. Unfortunately, they did not provide any technical details on what exactly they are looking for. The referred website http://www.littleboxchallenge.com/ as of today provides zero useful info either. Hopefully, they will clarify the competition shortly.