Some data points for the "renewables are too expensive crowd":
1) Korean researchers develop plastic solar panels that deliver power at $0.10 per watt. (Rule of thumb: coal is $1/watt, nuclear as much as $6/watt.)
2) NJIT researcher developing process that could lead to home-made solar panels from your inkjet printer.
3) California utility buying concentrating solar power at $0.10 per kilowatt-hour. Peak cost of electricity in Ontario, yesterday at 3PM: $0.09 per kilowatt-hour. (This was about twice the average for the year so far, but the point is clearly, we can afford it.)
4) And if you need to store renewable energy, how about a big block of pencil-lead?