Thinking about solar power, etc...

Great solar estimator, using local utilities, calculating cost, savings, ROI, etc...

An article on how to knock $2,000 off taxes for going solar...

A comprehensive source of information on state, local, utility, and selected federal incentives that promote renewable energy: DSIRE: Pennsylvania Incentives for Renewable Energy

Here are some interesting panels, and a lightweight solar water heater panel.

Affordable Solar - another retailer with a big selection.

And here, one man's blog about going solar... Somewhat related - piped sunlight...