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Date: Sat, 29 Nov 2014 11:56:39 -0800
From: Darren Pilgrim <list_freebsd@bluerosetech.com>
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To: Erich Dollansky <erichsfreebsdlist@alogt.com>
Subject: Re: OT: UPS for FreeBSD
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On 11/28/2014 8:12 PM, Erich Dollansky wrote:
> Real high voltage transmission
> lines using DC make sense.

Someone already tried that.  It doesn't work.  The conductors have to be 
impractically large to get a useful amount of current, and the distance 
loss is so high you can't build even a metro grid with it, let alone a 
regional grid or the long-distance transmission systems we use now.