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View Diary: The rage of a dying dinosaur: coal declines in United States (101 comments)

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  •  CJ (0+ / 0-)

    Its a good try, but have you done the calcs for how many wind towers you need to power even one train and what are the financial, energy, materials and time costs of building them?

    Electricity is a high grade energy, perfect for lights, computers and intermittent stuff but crap for heating, cooking and motive power. The energy losses (assuming renewable production) in transmission and conversion to mechanical movement are enormous.

    Regenerative braking would help, but the biggest problem is getting a couple of thousand tonnes moving in the first place. You need to be able to apply massive levels of force for the first couple of minutes and the grid has to be able to sustain that. Stopping a train for a couple of hours might not even save any net energy.

    It works over compact networks or in places like underground where fumes are a problem, but long distance electrification, I seriously doubt the economics of it under any scheme.

    Add to that the rising cost of all energy and the imminent failure of the gas market and all of the factors, energy supply, time to production of new facilities and financial resources are all against it.

    Until inauguration day The USA is in the greatest danger it has ever experienced.

    by Deep Dark on Sun Jun 24, 2012 at 01:22:01 PM PDT

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