(Steven Hayward) The number of people in the world who can be said in "energy poverty," that is, with little or no modern energy available, is around 3 billion. About 1.5 billion people, according to some estimates, have no electricity at all, and most of the three billion rely on extremely low-tech or non-tech sources of energy for basic needs of cooking and warmth, meaning they burn, wood, straw, or dried animal
Source: Power Line