I think calling it "Green" is a bit of a stretch. They are still goiing to be using the v8's to power the cars. The KERS systems will do nothing but allow for additional power to be gained due to the freeze in the v8 development.
It is going to be like a 100hp boost for short periods.
My hope is that this will be the first step towards a better way of powering automobiles. Unfortunately, there are an aweful lot of people that hate the idea of F1 leading the way in road relevant technology. You know, because the F1 parade is "fine" the way it is, and shouldn't deviate from it's fundamental wastefulness so certain fans can wallow in the warm gooey feeling that their favorite team can waste the most.
Sometimes, I find that the laws of physics are much more comprehendable than the human need to waste.
But, whatever, right? Who am I to say what should and shouldn't be? In my daydream, F1 cars would run Perendev reclaiment systems with electric motors, thus completely removing the internal combustion engine entirely.
But of course, people would cry since the cars would be near silent and the fans at the track could actually converse at a normal level, and the track personell of the teams would not have hearing problems in their later years.
But again, who am I to say that the arch-conservatives are wrong in their belief that F1 needs to keep on wasting money/energy/health just so "they" can feel good about themselves?