When you are going to be installing PV solar cells, it is possible that you could be facing a serious investment upfront. The average solar system can cost $20,000 to install after the tax credits offered to a homeowner. They are a long term investment for savings but choosing the right installer can make a difference as well. As solar cells can be designed to last up to 50 years at a time, it is important that you are able to get the most out of your investment. Here are some of the top qualities that you should be seeking when you are choosing a solar installer!