>we could all live better with a lower GDP, is it not?
Yes and No. GDP is a measure of production, expressed in dollars. However, when GDP growth is computed, changes in the value of money do not have an effect. E.g. GDP growth from year-1 to year-2 is:
(volume produced in year 2)*(prices in year 1)
/
(volume produced in year 1)*(prices in year 1)
So reducing the price of something does not in-of-itself have an effect on GDP growth (or GDP stated in nominal terms). However, it's often the case that reducing the price of something means that there is more demand for, so more is produced, so (volume produced in year n+1) goes up, so GDP grows.Summary: if the price of energy is reduced it will most likely lead to GDP growth - whether we could all then live better lives, I don't know. I'd like to hear a good holistic explanation of why GDP growth is required for national happiness..
http://en.wikipedia.org/wiki/Gdp - see 'Adjustments to GDP'