The Little Box Challenge by Google and IEEE challenges the electrical engineers all over the world to design an inverter of the size of a laptop or a tablet or even smaller, if you can. The winner of the challenge will take home $1 million. The attached PDF has all the information about the contest rules, specifications, technical approach etc., which you should refer to if you are participating in the contest.
Read more about the contest: Little Box Design Challenge.
Google Inverter Design Challenge : Specifications, Testing Procedure & Requirements 1.0
Little Box Challenge Contest Specifications, Testing Procedures, Technical Approach and Requirements