Get your financial figures right before deciding on a solar system. You need to weigh the cost of the system against how much energy it will save you. Take the cost of the system and multiply it by its' lifespan. Now figure out how much energy you will use in that lifespan to determine if it is right for you.
Maximize the output of your solar panels by adjusting them seasonally. Adjusting your panels twice a year, once in the summer and once in the winter, will ensure that your panels are producing the maximum amount of energy by taking into account the earth's changing position relative to the sun.