> I suggest that instead of obsessing with the NRJ/POP term in the equation we focus on GDP/NRJ instead. That's what absolutely everyone has been doing for the

> I suggest that instead of obsessing with the NRJ/POP term in the equation we focus on GDP/NRJ instead. That's what absolutely everyone has been doing for the past 70 years. What happens usually when energy efficiency is called the rebound effect. We will create more with as much energy, not create as much with less energy. Also, note that creating as much with less energy will limit GDP growth as well, as the GDP is based on creation of goods and services.