I cantacted Tom after ringing the SolarHart contact number. He asssured me I would be able to resolve the questions I had. When we first had the solar panels installed our electricity bills droppped considerably. Over a period of about 6 to 12 months, we have seen the bill increase considerably. My wife and I questioned whether the panels and inverter we paid for were continuing to work as efficiently as they did after we had them installed. Tom asked me to send me copies of the previous bills from our provider and reviewed the,. He contacted me and politiely I had to ask him to recall at a later time. He did this promptly and we were able to discuss his research and insights to my current bills. He then asked me to address issues at my residence and ensure that the information on the inverter corresponded with the data recorded on my bills were consistent. I am reassured that Tom has helped me to review how we might need to adjust what electricity usage is done during our solar panels most efficient peak performance and look at the power we pay for when they are not active.