I'm more interested in optimizing the client side, at least where the web is concerned. I keep wondering when Google is going to start generating energy ratings

I'm more interested in optimizing the client side, at least where the web is concerned. I keep wondering when Google is going to start generating energy ratings for the top few thousand sites on the web. It would shame the low performers into producing front ends that are no longer glacial. I was loading wunderground.com's 10 day forecast for the umpteenth time lately and reflecting on how horribly slow and inefficient it is... Surely website energy ratings must be in the works somewhere, right?