Solar in Virginia starts with the roof and the sky between the coast and the ridges. A coastal roof may see a wide sky and take salt wind at every fitting. A Piedmont roof loses hours to hardwoods. A mountain roof loses hours to the ridge itself and still has to carry snow. The covering underneath has to be sound. Say which landscape the house is in.
Direction and shade decide the day. A south slope open to the afternoon is not a north slope under oaks, and a roof chopped by dormers may have less room than it looks. Town blocks throw shade from the next house. Rural lots throw shade from the tree line. Describe chimneys, valleys, and the slopes you think face the sun. Leaves on the roof for much of the year belong in that description.
Do not plan an array on a roof that leaks or is due to be replaced. Attachments have to stay tight through coastal wind, Piedmont downpours, and mountain ice. If you know the material and the age, say both. An attic stain matters more than a clean overhead picture. Salt on the eastern edge is a harsher site, not an easier one. Snow that slides on a ridge is part of the site too.
The electrical cabinet is the other half. Older houses often have a crowded panel and a long path from the roof. The utility has to accept the interconnection before the system runs. Say whether the service is simple, and ask who files that step. Keep the talk on shade, structure, and the wire. A roof in the trees is not solved by a larger wish.
Bring the region, the roof direction, and the shade. Solar in Virginia is a site question from salt air to the Blue Ridge, and the day of light is not the same in both places. Call the number on this page.