Very little is unlimited when crossed with exponential growth rates.
Early books (1860s to 1880s) on oil, gas, and coal noteed that tthe United States' coal reserves were good for one millon years, _at then-present rates of consumption._
The rates increased. A few centuries, tops, now.
British coal extraction peaked in the early 20th century.
UCSD physicist Tom Murphy extrapolates human acttivitty to galactic-sscale energy conssumption in fairly short time.
Yes, but unless you're going to move your house to the bottom of that hole, someone is going to have to install and maintain the power lines to get that power to you.
In that way it's very similar to oil.. no one has to pay to create the energy contained in oil, but they do have to pay to dig it up and distribute it. And yet, oil is not even close to being free.
Edit: a better comparison would probably be hydro.. which also isnt free.
Please refrain from unnecessary, unsubstantiated insults. Rgbrenner's point that geothermal is costly for the same reasons that oil is costly - that is, it takes work to transport the energy in usable form - is valid. You're right that geothermal has a humongously deep supply curve, but that doesn't mean its price will be zero.
The point was that if you want energy in your home, you either (1) have to transport energy to your home or (2) place your home at the source of the energy. Since placing your home next to a large temperature differential is difficult, then the future will continue to rely on option (1), transporting energy to your home. And if energy has to be transported, its final price will not be zero, even if its wholesale price is.
Nothing will ever be truly zero cost, but those costs can be minimal.
A geothermal system for your house involves "transporting energy to your home" but the distances involved are so minimal that once installed it's next to nothing.
> Since placing your home next to a large temperature differential is difficult...
Well, that's wrong. Every house sits on top of a significant temperature differential which is why geothermal systems work. In large parts of the continental US the ground deep beneath the house maintains a consistent temperature year round. This can be used as a thermal sink in the summer, and a source of heat in the winter.
A friend of mine just got geothermal for his very ordinary house in a major metropolitan area. It was cheaper than the solar on my house was a bunch of years ago. Your point seems very bogus to me.
Yep. When we are brokers of energy at a scale where it can't be considered infinite, we will also be a fundamentally different species than we are today.
That being said, until we have highly optimized how we utilize that unlimited source, it will remain a scarce resource.
There is also more food than humans need. But there are some starving ones. Distribution is the problem.
As for universe, the only meaningful sources are earth and Sun, anything farther away may not exist at all.
Kind of answered this to tedsanders below, but basically I think what makes you win in this zero sum game is information. There are pretty much just two things available in big perspective that can make you win: energy and information. And I think information scales better.
