The challenging economics of US residential grid defection |
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Affiliation: | 1. Fraunhofer Institute for Production Technology, Zukunftsmeile 1, 33102, Paderborn, Germany;7. Department of Materials Science, University of Paderborn, Warburger Strasse 100, 33098, Paderborn, Germany |
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Abstract: | Declining costs for solar photovoltaics (PV) and excitement about new technologies have led to speculation that self-sufficient PV/battery storage systems will soon become competitive with traditional electricity service. We compare a grid-tied residential solar system with an off-grid solar-plus-battery system at 1020 US locations, and calculate three effects of “grid defection” for each: the private net costs to the homeowner, the change in system generation costs, and change in system emissions. For the average US location, an off-grid solar system is almost double the price of grid-connected solar, is associated with higher system generation costs, and has no emissions benefit. |
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Keywords: | Grid defection Economic analysis Solar Energy storage |
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