Violin plots showing distribution of local network upgrade cost for 2030, 2040 and 2050 levels of PV, EV, and HP deployment in LSOAs in major urban conurbations, cities, towns and villages across GB. The central line, upper and lower bounds of the box and edges of the whiskers represent the median, one s.d. and extreme values, respectively ( n =14,662, 19,429, 3,968 and 3,642 for major urban conurbations, cities, towns and villages respectively). The widths of the violin plots represent the distribution of upgrade costs amongst LSOAs within each rurality category.