I do think that the 21st century will have some sort of "green revolution", it's just a name which everyone quickly understands. It's not a perfect term.
I myself don't own - and never had - a car and do everything by bike or by using public transport, so that already helps a little bit in saving energy I think. Furthermore I was also thinking about production/transport/etc. of the solar panels which might also cost quite some energy. So in the end a solar energy panel wouldn't differ that much from electricity coming from the grid. The idea was/is to solar recharge my Asus EEE (~25 watts) while I am not at home/working. And in the evening use the netbook for a few hours. Total energy usage in combination with my LCD monitor - which would use the grid - would be about ~90 watts. In ideal conditions.
I should make a calculcation to see the real difference it makes compared to just using normal electricity from the grid.
But besides that, I think that solarpanels still need to become more efficient. I read already a few times about new technologies discovered, but the hyperlinks I gave are the only systems I know of. And which might be not worth it perhaps. But hey, if *everyone* keeps waiting, current solar companies won't earn enough money to start making more/better solar panels. It would be ideal if I could just put my mobile at my desktop and it recharges via the solarpanel integrated in the backside. And while for other people a car is a toy - which doesn't really help the environment - I think playing with (portable) solar energy is not that bad at all.