According to the NREL data above,installation typically accounts for 5. For a standard residential 6-kW array, labor often falls within $2,000-$4,000, while larger or complex roofs can push labor to $6,000-$8,000. On average, homeowners might spend between $100 to $300 per bracket, leading to a total installation budget heavily depe. Based on 2022. NLR analyzes the total costs associated with installing photovoltaic (PV) systems for residential rooftop, commercial rooftop, and utility-scale ground-mount systems. This work has grown to include cost models for solar-plus-storage systems. Areas with higher labor costs or permitting requirements tend to see increased prices. It's not just about the metal; it's about what's under your feet and the red tape overhead. Solid rock? Grab your wallet.