Photovoltaic compare

A 20 Watt crystalline silicon photovoltaic from 1998 vs 3 layer amorphous from Uni-Solar. Under dense clouds, the crystalline PV has no chance.

Battery voltage
20 WP
Charge current
Yield per m²
% peak power
34 WP
Charge currend
Yield pro m²
% peak power
2005-12-06 09:00 2005-12-06 12:00 2005-12-07 09:00 2005-12-07 12:00 2005-12-08 09:00 2005-12-08 12:00 2006-03-14 09:00 2006-03-14 12:00

Dense clouds,

Dense clouds

Dense clouds

Dense clouds

Blue sky
Sun behind stratus

blue sky
Sun behind
light clouds

in March

Sun behind
12,2 V 12,2 V 12,3 V 12,3 V 12,2 V 12,5 V 11.1 V 12.2 V
10,5 V 13,5 V 16,1 V 17,2 V 15,3 V 19,8 V 19,7 V 20,1 V
0 mA 9,1 mA 34,5 mA 84,5 mA 26,8 mA 200 mA 168 mA 360 mA
0 W 0,555 W 2,221 W 5,197 W 1,635 W 12,500 W 9,324 W 21,96 W
0 % 0,55 % 2,12 % 5,20 % 1,64 % 12,5 % 9,32 % 22,0 %
22,1 V 22,3 V 23,1 V 23,9 V 24,0 V 25,6 V 26,0 V 25,3 V
32,6 mA 85,5 mA 124 mA 260 mA 104 mA 520 mA 420 mA 780 mA
0,795 W 2,076 W 3,050 W 6,396 W 2,538 W 13,000 W 9,324 W 19,03 W
1,17 % 3,07 % 4,49 % 9,41 % 3,73 % 19,1 % 13,7 % 28,0 %

Photovoltaic - Electric power direct from light Photovoltaic - Electric power direct from light
Even a far north situated industrial nation like Germany could produce a big part of the needed energy by the roofs of the houses. Photovoltaic has much potential.

  Planning an one family house

I started 2004 with the requirements specifications for the planned construction. One year later how the requirements specifications develops to plans.

South side with sunny sight
Who gets the south side? Human or solar equipment? Against most rigid solar architecture, not the solar equipment but the human inhabitants.

Photovoltaic east west roof
The requirement for a flat inclining towards east and west roof influences the decision for the photovoltaic.At unfavorable alignment is amorphous silicon from Unisolar favorite.

Under the staircase Under the staircase
A rectilinear staircase makes it possible to place below some cupboards. Since the staircase does not count at the living space, it makes more storage capacity possible.

Wardrobe below staircase Wardrobe below staircase
One movement and the wardrobe glides out below the staricase. In many prefabricated component houses are angled staircases where this is impossible.

Shoe box below staricase Shoe box below staricase
The next furniture below the staricase is for shoes, because they need less height than the wardrobe. Passionate optimal space usage.

It snows - anyway electric power from the sun
December 6th 9:00am. Dense snow clouds, the near Untersberg is not visible, it snows. What can a photovoltaic deliver at this weather conditions. Solar power despite snowfall
While the crystalline modul delivers even not enough voltage delivers the Three layer amorphous from Unisolar still 32,6 mA charge current. 398 mW from 0,5m². 12 noon in december
The snowfall has changed to rain. For the human eye as dark as 3 hours berore, but Canon S1 and the  Voltmeter show an evident increase. Cloudy but brighter
December 7th 2005 in Gartenau. Between the clouds is a part of the Untersberg visible. Maybe a little brighter than yesterday. Measurement shows even brighter than yesterday at noon. Dusky or dusky? Difference 1.8
Subjectively, it's as dusky as yesterday. But the electric power yield shows between dusky yesterday 9:00 and today 12:00 is an 1:8 difference. Morning sun behind stratus
Blue sky, over the near hill is some stratus. Subjectively is the weather much brighter than yesterday at 9:00am. But objectively, it was yesterday at the same time brighter. Winter sun behind light clouds
Only 19 degree above the horizont is the sun behind light clouds. At horizontal photovoltaic, this brings only double compared to yesterday noon under clouds. Drawer below the staircase
Finally the third furniture below the staircase. Because of the limited height is only a drawer possible.

Context description:  dense cloud clouds cloudy different weather conditions condition yield photovoltaic pv test photovoltaictest pvtest tests photovoltaictests pvtests compare photovoltaiccompare pvcompare crystalline polycrystalline silicon vs against 3 three layer layers amorphous Uni Solar Unisolar
one family house houses plan idea concept plans ideas concepts event events date time