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    Jul 14 2011: As far as the energy goes, nuclear has to be in place, at least for a long time now. Though it is expensive to build a plant and dispose of the material, nuclear needs to provide the minimal usage of energy for the city so there are no black outs. Also a plus is that it nuclear directly does not have carbon emissions, the mining for the uranium ore is what causes the carbon emissions.
    Wind energy and solar energy is at the grace of the weather, aka it isn't dispatchable. The key to harnessing these energy sources is to store it. Storages systems include hydro-pump reservoirs, thermal storage, pressure reservoirs, etc.
    With the coming dominance of wind, solar, and hydro electricity (green energies), the implementation of these storage systems will have to required by every infrastructure. Also cities will have to create large storage systems to provide to the whole grid.
    As technology evolves, becomes more efficient, and more reliable, these could potentially take over nuclear and coal. As this point, we will be a society that runs on pure green clean electricity.
    So I say invest in electricity storage systems, and try to figure out how to make them more efficient, more dispatchable, higher capacity, and of course cheaper. This will be the key to becoming a society that runs on 100 percent green energy sources.
    As far as everything else goes, that is at the prejudice of the bureaucrats.

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