A recent NV Energy bill and, ideally, a year of usage history are the starting point. Las Vegas usage swings hard between mild months and peak air-conditioning season, so a single month can be misleading. The account details also go on the interconnection application later, which saves a step once permits are approved.
During the free assessment we measure roof planes, note roof material and condition, check for shading, and look at your main electrical panel. Tile, shingle, foam and flat roofs each need different attachments, explained on the equipment page. Anything that affects cost, like a panel upgrade or roof repair, is identified here rather than on install day.
Next we build the array layout on your actual roof, leaving the fire-code access pathways required around ridges and edges, and confirm the framing can carry the load. Production is modeled for your orientation and shading. Your proposal shows the layout, expected output, equipment models and pricing together so you can compare it with anything else you’re considering.
Where your home sits decides who issues the permit. Las Vegas, Henderson, North Las Vegas and Boulder City each run their own building departments, while Paradise, Spring Valley and Enterprise go through Clark County. We prepare the plan set for the right office and answer any plan-review comments ourselves.
On-site work usually wraps in a day or two. The crew sets attachments and racking, mounts the panels, runs conduit to the inverter, and makes the electrical connection, which may mean a short power shutoff. On tile roofs, tiles are lifted and reset around each mount. We clean up and walk you through the equipment before leaving.
After installation, the building inspector checks the system. Once it passes, the utility interconnection is finalized and you receive permission to operate. The system shouldn’t be switched on before that approval. From there, monitoring lets you watch production day by day. Common timing questions are covered on the FAQ page.