I interviewed 5 different companies before choosing Go Solar Power. I had a few requirements when I set out to get a solar system. I wanted a reputable company that had done this awhile (there are a lot out there, but it didn’t mean they knew what they were doing), I wanted reasonable pricing and I wanted battery backup. While I love helping our ecology, and not paying the electric company, more importantly I wanted to run my house if the power company failed. Most of the companies I interviewed did not even want to deal with the battery backup and had no experience in it. The couple that did, wanted to use old style panels that could not be individually monitored or have inverters in them. They just feed the DC voltage to a single inverter rather than each panel converting the energy to AC voltage. The other problems with them is that the inverters they recommended could not have more than one back up battery and I wanted two with the option for more later. They also did not offer to have Tesla power wall batteries. They offered other brands that were cheaper, but not as tested as Tesla batteries. I like cheaper, but when I really need my electricity, I don’t want to chance it if I don’t have to. The Tesla batteries are the same technology they use for the batteries they install in their electric cars. So, their reliability must be excellent. If you built your company on only building electric cars and the reliability of your batteries turned out to be bad, you wouldn’t be in the electric car business long and Tesla knows that. They built their technology for reliability for years.Mark was the most knowledgeable of all the salesmen I talked with, even the guy in our area who had started selling them 30 years ago, back when solar first came out. He didn’t seem to have kept up with the technology. What I did find is that the basic price per kilowatt hour, without the batteries, was almost the same amongst the companies. I checked on the internet and found that what Go Solar Power was offering the batteries and equipment for seemed right in line with the pricing I was finding. Mark was the only one that could help me figure out and could explain to me how he was figuring out how many solar panels and batteries I needed for what I wanted to cover if we lost power. My calculations came to the same answer he gave me. With two Tesla Power Walls and the right number of panels to charge them, I was at a comfortable medium. I wanted to be able to run my house air conditioner, refrigerators, water heater, lights etc. totally off grid for weeks if needed. I might not run my air conditioner as cold as I do now at night. My wife and I like to sleep like it’s wintertime. I might only use my electric dryer during the day when there might be more extra power, but I would be comfortable. I wanted enough panels to make it very likely I could fully discharge my batteries at night and still be able to fully recharge and use power during the next day, during the daylight hours.Then there was the financing. That part kind of concerned me at first. I felt a little unsecure not knowing who my bank was, but that turned out to be great too. My loan is with Corning Credit Union in New York. They sent me all the paperwork, I read everything, it looked good and I signed it. Very professional and on the up and up.We have had a few power outages and the Tesla Powerwalls kicked in flawlessly. We saw the lights flicker and we lost cable for a couple of hours, but it wasn’t until I checked my Power Wall app that I realized they ran the house for a couple of hours. I didn’t even know it.Our system has been operating almost a year now. I think you could go cheap, go questionable, and go in fear or you can Go Solar Power and sleep as well as I have every night since I started this. I have no regrets, no concerns and have been happy I chose them all the way through this.