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Environment & Energy

kristopher

(29,798 posts)

9. I haven't seen that addressed, but "...people refer to it as “hot dry rocks”

Reply to NickB79 (Reply #8)

Sun Jun 3, 2012, 10:46 PM

Jun 2012

Last edited Sun Jun 3, 2012, 11:44 PM - Edit history (1)

The concept is called EGS, which stands for engineered geothermal systems, or, according to preference, enhanced geothermal systems. Some people refer to it as “hot dry rocks,” others as “deep geothermal.”

As I understand it, the wells last a couple of decades before being abandoned due to cooling of the stone. I've heard nothing about corrosion, but I'd be interested in hearing about anything you find on the topic.

Basics for anyone interested.
http://www.google.org/egs/

http://www1.eere.energy.gov/geothermal/egs_animation.html

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Highlight:

Geothermal Power to The People: Forget Iceland, Hot Rocks Are Everywhere [View all] kristopher May 2012 OP

There is a "hot bedrock" resource under the Allegheny Mountains of Pennsylvania Kolesar May 2012 #1

Interesting article, but I wonder... damyank913 May 2012 #2

When you have water going down and then coming back up it only takes a small amount of energy madokie May 2012 #3

I guess what has me wondering is the 3 miles down thing... damyank913 May 2012 #4

Doesn't matter if it's 3 miles or 30 miles. The energy is the same. immoderate May 2012 #5

"Distributed Generation" is a much better grid design than what we have now. kristopher May 2012 #6

kick kristopher Jun 2012 #7

Anyone know the lifespan of a geothermal power plant like this? NickB79 Jun 2012 #8

I haven't seen that addressed, but "...people refer to it as “hot dry rocks” kristopher Jun 2012 #9