There is no need to tear apart your roof to use solar energy. You can make small switches like putting in solar powered outside lights. They charge their batteries during the day, switching on and providing illumination all night.
Do you feel better now after having read this article? Solar energy, while still fairly new, is making great strides when climbing up the energy ladder. It is set to take over, and it is a renewable energy source that can help you realize great savings in the long run.
If after installing solar panels you find that you are producing more energy than you need, you can sell the extra energy that you produce back to the electric company. This method will help you recoup the cost of your solar energy system's installation and parts. Additionally, after you have recovered your costs, you will be making a profit.
Testing at around -20c, amazing results.