Enter your quoted total price and system size in watts to get your $/W figure, benchmarked against typical U.S. pricing.
Cost per watt varies by region, roof complexity, panel brand, and whether battery storage is included — use this as a sanity check, not the only factor in choosing an installer.
Two quotes with very different total prices can be equally fair once you divide by system size — a $30,000 quote for a 10kW system and a $18,000 quote for a 6kW system are actually the same $3.00/W. This strips out size differences so you're comparing installer pricing apples-to-apples, then check the result against your full cost breakdown for a complete picture.
Panel and inverter brand, roof complexity, permitting costs, sales/marketing overhead, and whether battery storage is bundled in all shift the price — the cheapest $/W isn't automatically the best value if equipment quality differs.
Not necessarily — verify what's included (permits, monitoring, warranty length, battery) since some installers hit a low headline number by cutting corners elsewhere.