I just finished watching a video interview of a professional solar panel installer. He explains the process of getting set up with residential solar panels step by step. I like the last step best:
“Watch your meter start spinning backwards.”

Photo Credit: geocam20000
Unlike PV solar panels, there is no limit to how low-tech you can go when heating water with the power of the sun. Modern systems use vacuum tubes and they are very efficient. A simple collector that uses a black surface encased in insulation and glass with copper piping running through it will work too. Very basic systems are commonly used to raise the temperature of swimming pools. They can also help reduce the cost of heating the running water that you use in your home. Even if you live far away from the equator, you can offset your water heating costs by 25% or more with a solar water heater. Sunnier places can approach a 100% savings. DIY solar water heater info continued ...
When we talk about how much solar panels cost, the standard measure is in dollars per watt. The electricity that we buy from the grid is generally priced in dollars per kiloWatt hour. Solar panels generate at their full potential for about 5 hours per day. More on the cost of solar panels...






























