I think you're predictions about cost and efficiency are a little optimistic. While technology will certainly continue to improve incrementally, it seems very unlikely, (although admittedly possible), that we'll all be sporting 40% eff. panels anytime soon. But even at a nominal 15% efficiency typically found today for 50 cents a Watt and balance of system hardware down to about $1.5/W, the technology works plenty good enough to easily go off grid in style for relatively low cost. If you compare to living off grid using a generator, the saving in equipment depreciation, maintenance, and fuel will easily pay for for a solar system in very short order and you don't have to listen to that infernal combustion engine running all the time.
Captain Carter
www.archemedesproject.blogspot.com
On Saturday, February 13, 2016 3:45 AM, "Hannu Venermo gcode.fi@gmail.com [electricboats]" <electricboats@yahoogroups.com> wrote:
Its highly likely that within 3-5 years, PV panels will go to 40% or so
efficiency.
At approx 0.30$ / w cost, from current 0.38 (manufactured) 0.50$ retail
pricing.
One approach is refletive panels, using the undersneath ide as well.
Thus, in 5 years, the same sized panels will give approx 2.3 times more
energy, at 30% less cost.
The controller prices will also drop imho == 80%, from 20-50% system
price to less than 10%.
This is because volumes go up, and manufacturing controllers has very
low incremental cost/w.
A 1000 W controller costs approx 20$ in parts to manufacture - just like
a servo drive.
Large boats can be self-sufficient for 2-4 days, fairly easily.
This gives instruments, comfort, (and maybe) some ac.
See windhorse from dashews for example. 2 kW panels.
2 kW is only 1500$ these days.
On 13/02/2016 03:22, moriartybob@yahoo.com [electricboats] wrote:
> Nothing revolutionary, but maybe encouraging to others considering
> going solar.
>
> My very nice Electroprop All-Energy Racer system is connected to a 580
> watt (peak) solar bimini. After the most recent sea trial I decided,
> as an experiment, to sever shore power and see if the solar array
> would completely recharge the 210 Ah @ 48V battery bank.
--
-hanermo (cnc designs)
------------------------------------
Posted by: Hannu Venermo <gcode.fi@gmail.com>
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efficiency.
At approx 0.30$ / w cost, from current 0.38 (manufactured) 0.50$ retail
pricing.
One approach is refletive panels, using the undersneath ide as well.
Thus, in 5 years, the same sized panels will give approx 2.3 times more
energy, at 30% less cost.
The controller prices will also drop imho == 80%, from 20-50% system
price to less than 10%.
This is because volumes go up, and manufacturing controllers has very
low incremental cost/w.
A 1000 W controller costs approx 20$ in parts to manufacture - just like
a servo drive.
Large boats can be self-sufficient for 2-4 days, fairly easily.
This gives instruments, comfort, (and maybe) some ac.
See windhorse from dashews for example. 2 kW panels.
2 kW is only 1500$ these days.
On 13/02/2016 03:22, moriartybob@yahoo.com [electricboats] wrote:
> Nothing revolutionary, but maybe encouraging to others considering
> going solar.
>
> My very nice Electroprop All-Energy Racer system is connected to a 580
> watt (peak) solar bimini. After the most recent sea trial I decided,
> as an experiment, to sever shore power and see if the solar array
> would completely recharge the 210 Ah @ 48V battery bank.
--
-hanermo (cnc designs)
------------------------------------
Posted by: Hannu Venermo <gcode.fi@gmail.com>
------------------------------------
------------------------------------
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<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/electricboats/
<*> Your email settings:
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<*> To change settings via email:
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Posted by: Carter Quillen <twowheelinguy@yahoo.com>
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