by MonteQuest » Tue 04 Dec 2007, 22:26:05
$this->bbcode_second_pass_quote('Tyler_JC', ' ') So let's say that every 2 years, the rate of growth drops by a full percentage point until it hits say, 4% a year. This would be a realistic result of the law of diminish returns.
The numbers can be spun to show 30 terrawatts from renewables in 50 years, but in reality that isn't going to happen amid economic chaos. I seriously doubt we can sustain anything close to that rate of growth. It isn't going to be a repeat of the Industrial Revolution on cheap energy.
As I noted earlier:
$this->bbcode_second_pass_quote('', 'R')enewables have severe limitations:
Renewables are diffuse energy sources – The potential energy available is – by any convenient measure of energy density – orders-of-magnitude less than that available from the combustion of conventional fossil fuels.
Renewables are not, generally speaking, dispatchable –Because of their intermittent nature, most renewables must be coupled with an effective energy storage system to have any value as stand-alone reliable power sources.
Renewables have unfavorable economics – Renewable energy technologies, while having very low operating costs, have very high capital costs.
Almost all renewables produce electricity in a liquid fuel world.
So, all the terrawatts in the world won't put a liquid fuel into your ICE car...and that's what we are stuck with for quite some time.