Michael,

Of course - but the energy balance is just a theoretical concept,

a beancounter's satisfaction if you will of checking that the

two sides of a scale balance out - with exact specified quantities

on each side of the scale, no matter whether that is practical.

It is also a means to get a feeling when you install a solar system,

how much energy it needs to produce before it has earned back

the energy that went into making it.

Something to feel-good about when naysayers claim that you are

generating a net loss with all those high-energy-content panels

on the roof - so it is also used to support the claim that after

some 1-2 years, the panels have generated more energy than

they ever costed, so it is not a net-energy-loss as some claim.

Whatever your inclination - there is a whole world out there that

is not accounted for when considering narrow definitions, so for

a lot of practical applications, this is moot.

Most people look at the money and see that their system

generates money after approx 7 years. So they are happy and

whoever says "but it is an energy sink" gets the reply:

and what is your car? Both and energy and money sink.

At least the solar panels are generating money (and energy)...

 

Cor van de Water
Chief Scientist
Proxim Wireless Corporation http://www.proxim.com
<http://www.proxim.com> 
Email: cwa...@proxim.com Private: http://www.cvandewater.info
<http://www.cvandewater.infom> 
Skype: cor_van_de_water Tel: +1 408 383 7626

________________________________

From: Michael Ross [mailto:michael.e.r...@gmail.com] 
Sent: Sunday, May 25, 2014 12:33 PM
To: Cor van de Water; Electric Vehicle Discussion List
Subject: Re: [EVDL] Solar roadways.

 

Thank you Cor,

 

This is just me experimenting with the ideas....

 

Can we really disregard the energy cost of all those other items making
up the totla cost?  

 

I guess can see leaving out profit (which is sort an excess since
everyone involved already put food on the table, got medical care, and
so on. The people drawing the profit may not have undertaken the PV at
all without the promise of profit, so maybe that too is part of the cost
- energy wise, but it isn't clearly so); but the energy to transport the
panels afterward, to market them, to shuffle salesmen and installers
around, the energy cost of the inverters, disconnects wiring, lights and
heating in the installers physical plant.  Wouldn't all these be
foregone if the panels were never made?

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