[ExI] Dark Matter

[Eugen Leitl]

On Thu, Nov 14, 2013 at 09:45:37AM -0800, Adrian Tymes wrote:
> On Thu, Nov 14, 2013 at 6:58 AM, spike <spike66 at att.net> wrote:
> 
> > Next step is to price out 16 thousand square kilometers of PV panels, or
> > 16 billion square meters.  Any gurus among us?
> >

It's not a good idea to use PV (~20% efficiency) to drive
a synfuel plant (low efficiency) to refuel vehicles. 
PV to EV efficiency is quantitative, and automatically
deployed trolleys (plus autonomous driving) will
even let you forego large batteries, or run your
plug-in hybrid in trolleybus mode during cruise.

Not an option for planes or ships, obviously. Though for
planes wireless delivery is an option. Synthetic chemical
industry and fertilizer are also not wireless.

So if you're beyond 100% peak by wind or sun, make
hydrogen and/or methane and/or ammonia.
 
> From
> http://shop.mlsolar.com/50W-Solar-Panel-12V-Free-Shipping-OFF-GRID-RV-BOAT-181068755276.htmwe
> have one price point, at least, of $85 for 590x665 mm, which comes to
> a
> bit under $220 per square meter.  Granted, this is better quality than the
> panels you're talking about, but between discount for lower quality and
> bulk purchase discount, I suspect the price wouldn't come down by more than
> 2 orders of magnitude and probably no more than 1.  And that's not
> including the cost of the land, or the fuel processing equipment.
> 
> So, if you Kickstarter finance this, you're going to start off with much
> less than 16,000 km^2.

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