Solar in Nevada has fierce sun in the south and a colder, snowier roof in the north, and neither roof should be covered on faith. Southern coverings are often already baked: loose granules, tired underlayment, tile that cracks underfoot, foam that needs work. Northern roofs add pitch, snow slide, and ice. Wind is a fastening question in both regions. Shade from a neighbor, a slope, or a tree matters more in the north than on a bare southern lot, but it is never zero. Start with a person on the roof.
Ask the age and the surface. Ask whether roof work happens before any attachment goes in. Ask the flashing detail for tile, composition, or metal, and who is responsible if a penetration leaks. Ask how the array comes off later for a re-roof. An aerial image has not seen the deck. Say whether a cooler, a swamp-cooler curb, or a large vent already occupies the plane. Southern houses sometimes have all three.
The electrical service is the next limit. Southern houses may already be loaded with cooling and a pool. Older northern houses may have a panel that was never updated. Ask for the panel to be opened. Ask for the module and the inverter to be named, and ask whether the electronics are at each module or in one place. Ask who sees production and who you call when a section goes quiet. Dust films southern glass. Snow covers northern glass. Ask how access for that reality is planned without destroying the roof.
Ask who pulls the permit and who files the interconnection, and whether the system waits for permission to operate. Ask if you will own the equipment. Bring the town, because a Mojave roof and a Sierra-front roof are different structures. Skip the bill story. Call the number on this page.