Great experience! Just had them install two lithium batteries and a smart shunt in my Class B RV. I called and the quote seemed reasonable for me to drive the 200 miles. When I got there the job was easier than some others so the price was less than quoted. I respect they quoted on worst case instead of getting there and being hit with a larger than expected bill. Everyone was friendly, helpful and knowledgeable. I didn't feel rushed through and all my questions were answered. Also, I didn't feel "upsell" pressure at all. I highly recommend Discount Solar, especially for those of us that haven't a clue.