[aprssig] TAPR Dayton Solar Talk

[Rich Mulvey]

I ran some calculations a couple years ago for my house in upstate NY.
 Between the location, having to deal with snow cover ( no, I'm not
going to climb on my roof every day to shovel off the panels ), etc.
it would never have even come close to breaking even during my
expected lifespan.

The only solar system that would have made even a moderate amount of
sense was solar-assisted water heating.  And even that would have been
iffy.



On Mon, May 23, 2011 at 11:36 AM, KBØNLY <kb0nly at mchsi.com> wrote:
> I have tried playing with that PV Watts website, I don't really understand
> it, or its not giving me the correct numbers.  But for my location with a
> 1kW setup it says I will only make about $100 worth of energy per year.
>
> That means it would take about 20 years for a 1kW grid tie to pay for
> itself.  Not very economical.
>
> 73,
>
> Scott KBØNLY
>
>
> -----Original Message----- From: Bob Bruninga
> Sent: Monday, May 23, 2011 10:02 AM
> To: ve3nec at sympatico.ca ; 'TAPR APRS Mailing List'
> Subject: Re: [aprssig] TAPR Dayton Solar Talk
>
>> I'd love to try... cells on my roof.. or preheat... hot water...
>> (Is there another list somewhere where we should be posting this ?)
>
> Yes, SolarDIY at yahoogroups.com for Ham radio solar ideas...
>
>
>> is there an electrical "one way" valve for the electricity?
>
> Yes, all grid-tie systems have that fundamentl characteristic.  They can
> only push current against an existing waveform.  If the 60 Hz waveform goes
> away, they shut down in a few milliseconds.
>
>> How well P.V. cells would work in S. Ontario
>> is anybody's guess. Anyone with experience ?
>
> That is VERY EASY to answer and everyone should do it.  Just google for
> PVwatts, the on-line solar power calculator.  It takes only a few seconds to
> get a calculation for ANY size array, facing any direction ant any angle at
> any location.  AND the calculations includes a 10 year weather model for
> exactly your area.  It is the industry standard and is used by EVERYONE...
> and it is so much fun to play with ideas and see the results.
>
> Remember, the only thing that matters with solar grid-tie is the total
> annual production.
>
> Bob, WB4APR
>
>
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-- 
rich at mulveyfamily.com