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View Diary: Reject Keystone XL; Our Focus Should Be on Investing in a Sustainable Energy Future (42 comments)

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  •  only if they draw from lakes (8+ / 0-)

    no reason it can't just be from man made lake to man made lake.  Unless stocked, this shouldn't be much of an issue for populations.

    in any event, the issue of fish kills can be mitigated with a reasonable design, since a lot depends on stream velocity. (that isn't to say we don't need to avoid this problem)  

    Hay hombres que luchan un dia, y son buenos Hay otros que luchan un año, y son mejores Hay quienes luchan muchos años, y son muy buenos. Pero hay los que luchan toda la vida. Esos son los imprescindibles.

    by Mindful Nature on Tue Apr 16, 2013 at 02:49:02 PM PDT

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    •  The kind of pump storage power plant (0+ / 0-)

      you are talking about may not be economically viable because a design for pump storage with two massive water storage units of equal size at very different elevations will effectively rule out the engineering feasibility of doing that at the vast majority of potential siting locations in the United States.

      •  it's too damn flat (0+ / 0-)

        in many places, alas.  It's an interesting conundrum, since large scale integration of wind can also provide "backup" power, such that the need for storage is reduced.  I'm wondering how little one could get away with. Certainly a lot of folks are trying to build good dispatchable storage.

        Hay hombres que luchan un dia, y son buenos Hay otros que luchan un año, y son mejores Hay quienes luchan muchos años, y son muy buenos. Pero hay los que luchan toda la vida. Esos son los imprescindibles.

        by Mindful Nature on Tue Apr 16, 2013 at 05:11:28 PM PDT

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      •  Hydro Association (0+ / 0-)

        Suggests there is a lot that can be done to increase pumped hydro capacity. Decoupling existing pumped hydro from the coal plants is a good first step.

        NAS suggests that we can integrate 20% renewables without much work, after that storage and grid work will be necessary.

        .................expect us......................... FDR 9-23-33, "If we cannot do this one way, we will do it another way. But do it we will.

        by Roger Fox on Thu Apr 18, 2013 at 09:33:05 AM PDT

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      •  Actually Pumped storage is easy (0+ / 0-)

        It is a simple technology and you can make it any size.  Having a bigger elevation change means less water has to be used.  California derives a very large portion of their firm energy from the Central Valley Project reservoirs, some of which like Whiskeytown (a relatively small reservoir) are pumped storage.

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