docs.nlr.gov/docs/fy10osti/46909.pdf

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アメリカにおける住宅用太陽光発電の損益分岐点コスト

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This document examines the break-even cost for residential rooftop photovoltaic (PV) technology in the United States, defined as the point where the cost of PV-generated electricity equals the cost of electricity purchased from the grid. The analysis focuses on the largest 1000 utilities in the U.S. as of late 2008 and early 2009, revealing that the break-even cost varies significantly, from less than $1/Watt to over $10/Watt, despite minimal variation in solar resources. The document also explores how these costs may evolve over time, particularly in a 2015 scenario, identifying key drivers such as electricity costs, rate structures, and financing availability, which are primarily non-technical factors rather than technical parameters like solar resource or orientation.