I really liked working with these guys! I started by checking out their website. I used their online calculator. I wasn't sure about the result as it seemed too low so I called them. The technician confirmed I needed a 2 kilowatt system. Affordable Solar came over to look at the roof the next day and give me an installed price including doing the PNM paperwork. Two weeks later the system was in and the meter was spinning backwards! No messes in the yard much appreciated. After a month the inverter crapped out but they were over the next day to swap it out. It's been running great ever since. I highly recommend the folks Affordable Solar.