Keep your solar panels out of the shade. It might seem obvious, but your solar panels do need sun. Make sure that you are not installing them in the shade. Trim back the branches on surrounding trees if you need to. Failing to do so could cost you more than half your energy output.
If the cost of solar panels is prohibitive, you might consider buying one at a time. An energy audit can be requested from your electric company. This will assist you in figuring out how you use energy, so you could make some adjustments. This will allow you to use fewer solar panels.
These Litom LED Motion-Sensor and Solar Power Lights got my attention because they are an easy and low-cost way to get some light into my yard if someone …
Try to choose solar panels that can have their angles adjusted easily. The angle at which the sun hits the Earth changes throughout the year. This means that the best angle to catch the suns rays can be very different between summer and winter. Ideally you want to at least be able to adjust the angle of your panels twice a year, however if you can find some that allow adjustments four times a year (spring, summer, fall, winter) that is even better.
Ask your solar panel vendor about the certifications they have and about the testing of the panels you are interested in. You might qualified for some rebates offered by the government if you go through a certified vendor and choose panels that have received certifications too. Besides, this is a good way to make sure you are getting a quality product.