Don׳t just follow the sun – A global assessment of economic performance for residential building photovoltaics

摘要: Abstract Rooftop photovoltaic (PV) power generation stands as a promising technology for the transition towards low-carbon and buildings sector. However, in past deployment has been strongly dependent on policy support. With recent rapid decrease module costs, rooftop PV is exhibiting growing potential to be an attractive investment even absence of subsidies. While many drivers economic performance have investigated isolation, holistic analysis how realistic combinations influencing factors determine PV׳s economics still missing. We identify most important through comprehensive review literature. then provide model-based techno-economic small-scale grid-connected residential building system, assessing region-specific geographic, technological, parameters jointly influence performance. find that regions can already today investment, No regional factor isolation guarantee or impede Moreover, it might possible further improve Self-consumption identified likely driver value future, while low electricity prices (and thus fossil fuel subsidies) present powerful barrier some regions. Based these insights, we discuss implications makers investors with regard recognizing shaping markets investments.