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- W4285404883 abstract "Rooftop photovoltaics in Germany generate around 15 TWh of electricity per year, and there is sufficient roof area to increase this many times over. Germany’s transition to renewable electricity requires large increases in rooftop and field-based photovoltaics. However, for household systems, each kWh fed into the grid pays only €0.0653, while households gain a marginal benefit of €0.334 for each kWh of their own electricity they consume. This deters households from installing large rooftop systems, where a large proportion of self-generated electricity is fed into the grid. This study uses cost-benefit analyses based on quarter-hourly electricity data, to estimate economically optimum sized photovoltaic systems, for a typical detached house. It finds that, for a range of battery sizes, optimal systems generate about the same amount as the household consumes, but use only about half of available roof space. Heat pumps and rebound effects increase this slightly. A subsidy of 10eurocents/kWh for grid feed-in would make the largest systems the most profitable, but this would bring further problems. Policymakers should aim for more households to adopt photovoltaics, rather than recommending larger systems for those who do. They should also promote the synergy between heat pumps and photovoltaics." @default.
- W4285404883 created "2022-07-14" @default.
- W4285404883 creator A5036949190 @default.
- W4285404883 date "2022-09-01" @default.
- W4285404883 modified "2023-10-14" @default.
- W4285404883 title "Why German households won’t cover their roofs in photovoltaic panels: And whether policy interventions, rebound effects and heat pumps might change their minds" @default.
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- W4285404883 doi "https://doi.org/10.1016/j.ref.2022.07.002" @default.
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