Posted by MarkB_MI on March 04, 2009 at 02:23:34 from (216.234.98.246):
In Reply to: O.T. Hydroelectric posted by doorman on March 03, 2009 at 20:31:10:
Hydro will never supply more than a few percent our country's energy needs, unless we manage to implement energy conservation on a huge scale. And nobody seems willing to even talk about conservation.
Pretty much all of the best hydroelectric sites have been used up. Also, hydro plants are far from environmentally friendly; for example, the use of hydro power for "peaking" generation can lead to erosion downstream of the dam. Most dams have a finite lifetime, depending on how fast they silt up. Imagine the cost of dredging the silt out of Lake Mead, when it becomes necessary.
Hydro power is about the best form of peaking generation available, and it's important to have hydroelectric plants if only for peaking generation. But hydro isn't enough on its own.
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