Tag Archives: world-population

Why Energy Efficiency is an important issue today?

World Energy Consumption Evolution over the past century

Vincent BRYANT

For about a century, the world population has been multiplied by 12. We are 12 times as many today as at the end of the XIXth century. Since 1879, when was the electric bulb was created, the world energy consumption has been multiplied by more than 50.

Alongside the increase of the world population, we can indeed notice that the energy needs per person also increase greatly, despite the innovations and the technological improvements from which the population benefits. Indeed, the technical yields were generally strongly improved during the past century, but these efforts have been completely compensated by two effects: