Solar panels are by far the best applicable technology for converting solar energy to usable electricity today. With the sun available to us around the year, it is only reasonable to consider taping its energy for domestic use. Even so, the currently available photovoltaic solar cell technology is still not as efficient as desired. The cells used in most solar panels have an efficiency of about 15% to 20%. This means that only about 20% of the sun rays that reach the panel are converted to ...