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OKIsItJustMe

(21,057 posts)
6. this may help you
Thu Nov 21, 2024, 06:07 PM
Nov 21
https://www.nrel.gov/solar/market-research-analysis/solar-installed-system-cost.html
NREL's PV cost benchmarking work uses a bottom-up approach. First, analysts create a set of steps required for system installation. Next, they calculate the hardware, equipment, direct labor, and indirect labor costs associated with each step for a given location and system design. Finally, they add in costs associated with permitting, inspection, interconnection, and other overhead.

NREL's bottom-up cost modeling methodology, shown here for residential PV systems, considers a wide set of factors and many interactions between them.

These bottom-up models capture the impacts of economies of scale, efficiency, location, system design, and company structure on total costs. NREL uses these insights to develop roadmaps for future cost reductions and to provide context for cost variability observed in the market.

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