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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 t
by rgbrenner 10y ago
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.
- astrodust 10y agoI think you have a wobbly misunderstanding of physics. Iceland uses geothermal. They have it easy due to geological circumstances, but that's mostly a cost-saving measure. Any country can do the same. There's also geothermal systems for homes that cost far less that work by tapping the temperature differential in the ground: https://www.thisoldhouse.com/ideas/geothermal-heat-pump-how-it-works https://www.thisoldhouse.com/ideas/geothermal-heat-pump-how-... Oil is expensive because it's a scarce resource that requires a lot of effort to extract, process and transport.
- deleted 10y ago[deleted]
- tedsanders 10y agoPlease 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.
- astrodust 10y agoI'm specifically referring to the remark you'd have to build your home in a hole, which honestly makes no sense at all.
- tedsanders 10y agoThe 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.
- astrodust 10y agoNothing 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.
- gregw2 10y agoA 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.
- bbcbasic 10y agoE = mc^2. In the far future I think we'll do fusion and it'll be portable and cheap.
- deleted 10y ago[deleted]