Impact of customer portrait information superiority on competitive pricing of EV fast-charging stations

•Impact of information superiority among charging service operators is analysed.•Nash-Stackelberg-Nash game describing EV charging service operator competition.•Stochastic user equilibrium model considering heterogeneous customer preferences.•Parameter- and sample-driven charging service operator pricing models are proposed.•Influence of endogenous and exogenous scenario factors is comprehensively discussed.