Some of my panels

Here are a couple of pictures of my pv arrays. The tracking array is a 12 volt system for my lab building. To the left of the tracking array are the solar panels which heat the floor. The six panels leaning on the solar are the first pv panels I started with in the early 80s at more than $15 per watt. A whopping 30 watts total. The stack of 5 are vw panels. The other array is a 1KV 24 volt system for my shop building. The smaller panels above and behind keep the start batteries for the two generators and air compressor maintained. I have maintenance panels on the batteries of all of my equipment, I hate dead batteries!