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PRIDE
Photovoltaic Facades of Reduced Costs Incorporating Devices with Optically Concentrating Elements . “PRIDE”
A cost shared collaborative R&D Contract between BP Solar, University of Ulster, University of
Patras,and TFM. (Sub contractor : ISET)
funded by DG XII of the European Commission under contract JOR3 CT97 0128
Enerbuild Number 22
Co-ordinator: Dr T M Bruton BP SolarPresenter : Dr MH Patterson BP Solar
PRIDEObjectives
>To develop a PV module for building Integration incorporating a CPC concentrator to give 2x non tracked concentration
>To lower the module cost by 40%
>To give a similar kWhr /m2 generation as a conventional flat plat module
PRIDE - JOULE Project
>Truncated CPC to give 2.5X without tracking
Glass
CPC
Solar Cell
Back plate
1mm groove spacing
0,75
0,76
0,77
0,78
0,79
0,8
C12 C16 C18 C19cell number
Fill F
acto
r
50 mm
9.25mm
3mm
0.5mm groove seperation
0,76
0,77
0,78
0,79
0,8
0,81
C1 C5 C8 C9cell number
Fill F
acto
r50 mm
9.25mm
3mm
1mm groove spacing
596
598
600
602
604
606
608
610
C12 C16 C18 C19
cell number
Vo
c (
mV
)
50mm
9.25mm
3mm
3mm max
0.5mm groove spacing
594
596
598
600
602
604
606
608
C1 C5 C8 C9
cell number
Vo
c(m
V)
50 mm
9.25mm
3mm
3mm max
Solar Cell performance decreasing with narrower cells
Efficiency vs Concentration
14
14,5
15
15,5
16
16,5
17
1 2 3
Concentration (Suns)
Eff
icie
ncy
(%)
14.5_1
14.5_4
15_3
15_4
15.5_3
15.5_4
16_8
16_10
16_3
16_5
Concentration increases cell efficiency
Costs (Euro)
Standard module
CPC -1 CPC -2 CPC-3 CPC -4
2.0 x; 18€/1
2.5x; 18 € /l
2.0x; 9 € /l 2.5x; 9 € /l
Cell Cost 200.52 94.7 94.7 94.7 94.7
CPC 0 126 126 63 63
Glass & Encapsulation
81 81 81 81 81
Total Power (Wp)
85 77.2 92.6 77.2 92.6
Module (Euro/Wp)
3.31 3.91 3.09 3.25 2.58
Cost Evaluation showing only cost reduction in favourable scenario 23%
Prototype PRIDE Module
3mm CPC showing delamination and bending
Day Month PRIDE Pmax (Wp)
Pride Temp (°C)
BP 580Pmax (Wp)
BP 580Temp(°C)
Insolation (W/m2)
179 Jun 5.94 32.3 42.7 19.6 627.7
185 Jul 4.69 50.4 31.7 29.1
235 Aug 5.4 37.3 42.2 20.5 621.3
267 Sept 5.1 49.2 44.4 21.7 638.3
274 Oct 6.3 33.6 54.8 16.1 655.5
305 Nov 5.3 28.3 43.7 14.2 582.6
336 Dec 5.4 18.1 48.5 6.0 629.1
Results from vertical array at ISET for 3 mm PRIDECells versus a flat plate module
Deliverables
>Demonstration of LGBG cells capable of efficiencies over 16.5% at 2.5 x
>Fabrication of a CPC with solar cells giving an optical performance of better than 2x concentration.
>Testing of functional facade elements in Greece and Germany.
>Estimate of the production cost of the CPC module at 5 MWp per year manufacture.
Conclusions
> fundamental innovation in the project was clearly demonstrated
> suitable for incorporation into building facades with an estimated cost saving of up to 0.8Euro/Wp
> technological issues remain > acrylic resins appear incompatible with the solar cells in
extended thermal cycling and a better material must be found.
>The method of heat sinking the cells to the rear surface of the module has to be further developed.
> Because of the limited optical performance of the 3mm cell CPC prototype, the expected enhanced light collection of the CPC design was not demonstrated.