"An electrical grid is an interconnected network for electricity delivery from producers to consumers. Electrical grids vary in size and can cover whole countries or continents. ...
[Read more]
It consists of:
power stations: often located near energy and away from heavily populated areas
electrical substations to step voltage up or down
electric power transmission to carry power long distances
electric power distribution to individual customers, where voltage is stepped down again to the required service voltage(s).
Although electrical grids are widespread, as of 2016[update], 1.4 billion people worldwide were not connected to an electricity grid. As electrification increases, the number of people with access to grid electricity is growing. About 840 million people (mostly in Africa) had no access to grid electricity in 2017, down from 1.2 billion in 2010." - (en.wikipedia.org 28.08.2021)