Welsom solar (was Space based solar power will never be half the

>
> > Speaking for thin film a-Si:H polymer cells, 1.5 micron thin cells at 100m2 per kilogram of the polymer;
> Cells produce 168 Watt per m2 (AMO 1357 Watts/m2). 1Kg.(100m2) X 168 Watts/m2 = 16,800 Watts per Kilogram.
>

So who is the vendor? What is the pricing ? Where can I see and obtain samples for evaluation ?

> In space these cells do not suffer from light soaking effect, staying at peak efficiency of 12.4 % due to heat annealing self repair at over 90C.
>

Why does this phenomenon occur in space but not on the ground?

Has this effect been verified by test e.g. in thermal-vacuum chambers?

If so, who did the test? Please provide test report.

> Ground based arrays are calculated to kW hoursor MW hours. Based on the calcuation of the ground array
> a multiplier is used to show how many hours per day the solar arrays has enough sun for nominal operation.
>
> For example: a 9 % efficient(AM1.5 Standard 1050 Watts/m2) a-Si thin filmsolar array in Palm Springs makes 1 MW peak for 7 hours per day equaling 2,555 MW hrs per year of output. In space the 9% a-Si cells will run at 12.4 % due to heat annealing repair.,
>
> So 1.137 MW peak X 24 hours X 365 days = 9,860 MW hrs still calculated as AM1.5 1050 Watts/m2.
> 9,960 MW hrs X1.29 (for AMO 1357 W/m2)= 12,848 MW hrs. per year.
>

Kevin, that is nothing to do with the efficiency of the cell, it purely a calculation of how much sunlight the cell receives.

> You are right only 5.02 times better !, not 10 times better in space :)sorry

Your numbers do not account for efficiency differences, you have solar illumination time mixed in there.

> Efficiency of power beaming from space does however beat inverter and grid transmission losses
> for utility scale ground solar. Ya think?
>

It depends on the distance.

> The cells noted in the papers were 7- 9 microns thin and tested at AM1.5 for stabilized without heat annealing.

Please provide details of the tests performend.

> 7 micron polymer weighs 1 kilogram per 30 m2. Newer 1.5 micron thin polymer weighs 1 kilgram per 100 m2.
> 100 m2/kg x 168 Watts/m2 = 16,800 /kg
>

I will believe it when I hold one in my hand and test it with my own equipment.