Extended Data Fig. 5: Historical deployment of wind power, growth models and maximum growth rates (G) for selected countries.

Gray dots show empirically observed electricity generation from solar PV power, normalized to national electricity supply in the takeoff year to adjust for country size. The orange lines show Gompertz model fit and the dark blue lines show logistic model fit to these points (Methods). Stars indicate the takeoff year (T1%) and circles indicate the inflection points for each model (located in the future for accelerating growth). See Methods for definition of maturity and maximum growth rates (G) as well as the method for selecting countries for the analysis of G.