How to size a Residential PV Array for Your Roof

Estimate how large a rooftop solar array your home needs and whether your roof can physically hold it. Covers reading your annual kWh usage, finding peak sun hours, measuring usable roof area with code setbacks, accounting for tilt/azimuth and shading, and converting all of that into a panel count and an annual production estimate. This is a desk-and-measurement exercise — no electrical work.