I had a great experience with PPG when my wife and I called to inquire about putting in a system....we didn't even know how they worked. Chris was awesome. He came to our home, gave us a complete understanding of how solar systems work. We purchased ours and we are very happy with the result. We only have one regret and that is that we didn't put in a slightly larger system. Their installers were great, quick, thorough and nothing more can be said. I HIGHLY recommend them to anyone who is interested in putting in a system.