Fig. 1: Global rooftop area distribution.
From: Worldwide rooftop photovoltaic electricity generation may mitigate global warming
a, Rooftop area (in km2) at the macroregional and national scales. b, Global spatial distribution on a 1-km grid. c,d, Close-up of specific regions (indicated in b), covering approximately 1 and 0.7 million km2 in Nigeria (c) and China (d). Supplementary Fig. 3 contains the definitions and abbreviations for the macro-regions and countries.
