Solar in South Carolina is a roof question that changes at the fall line. Coastal houses bring wind, salt mist, and hurricane lift to every mount and flashing. Upstate houses bring hail and a steeper chance of ice on an array. Midlands roofs bring long heat and a lot of sun if the pines are not in the way. Live oaks in the Lowcountry shade planes that look perfect in a sky photo and fail in the afternoon. If nobody has stood on the roof or opened the electrical panel, the drawing is a guess.
Ask for that visit. Shingles or metal that are already tired should be replaced before attachments go down, because lifting an array later to fix a leak is a regret you avoid by looking now. Ask how each penetration is flashed and who returns if rain enters at a bracket after a blow. Ask what happens to the modules when the roof itself is replaced years on. A simple ranch and a chopped historic roof are different layouts.
The writing should name the modules and the inverter, and say whether the electronics are at each module or in one box. Ask who notices when production goes quiet, and who is called that day. Older panels in mill towns and historic districts may be too small for a backfed breaker and a disconnect. That is a first-visit fact. So is ownership: who owns the equipment after the work, and who removes it if the deck must be opened.
Permits and the utility interconnection are part of the work. Ask who files them and whether the system stays dark until permission to operate is granted. Shade, salt, hail, and wind are site facts. Speak them. Skip any story about what the equipment will do for a monthly account. The useful subjects are structure, flashing, the service panel, and the name on the hardware.
Say the town, the age of the roof, and whether oaks or pines cover the sunny side. Solar in South Carolina is not the same job in the foothills and on a marsh lot. Call the number on this page.