> Land is already purchased so cost is zero, use what you generate so sales also zero, zero tax, zero net profit and nobody values the overhead of their time for these things
Their basis: "We model a 6.2-kW residential rooftop system using 60-cell, multicrystalline, 17.2%-efficient
modules from a Tier 1 supplier and a standard flush mount, pitched-roof racking system"
So what they've done is effectively get quotes for installing their sample system and then divide by its power output. Sales tax, profit etc are added to the bill the customer pays the installer. Other tables give a more detailed breakdown.
> Land is already purchased so cost is zero, use what you generate so sales also zero, zero tax, zero net profit and nobody values the overhead of their time for these things
Their basis: "We model a 6.2-kW residential rooftop system using 60-cell, multicrystalline, 17.2%-efficient modules from a Tier 1 supplier and a standard flush mount, pitched-roof racking system"
So what they've done is effectively get quotes for installing their sample system and then divide by its power output. Sales tax, profit etc are added to the bill the customer pays the installer. Other tables give a more detailed breakdown.