I have been seeing more and more solar panel as I walk around neighborhoods lately, and often times I wonder if it would be practical to put one on my house. The other day I stumbled across RoofRay, a great resource for calculating your solar potential. It uses the familiar google map interface and lets you draw the size of solar panel you want on your roof. It calculates your solar potential based on panel size, slope, and the direction it is pointing. Unfortunately for us it confirmed some of my suspicions. For us to do a large (really large) panel on our roof it would cost $50,000 and take 30 years to save us enough money to pay for it. It makes me wonder if there are any similar resources for wind turbines?Check your solar potential at RoofRay.