1. PRIDE

2. 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 Solar Presenter : Dr MH Patterson BP Solar

3. PRIDE Objectives  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

4. PRIDE - JOULE Project  Truncated CPC to give 2.5X without tracking Glass CPC Solar Cell Back plate

5. Solar Cell performance decreasing with narrower cells

6. Concentration increases cell efficiency

7. Costs (Euro) Standard module CPC -1CPC -2CPC-3CPC -4 2.0 x; 18€/12.5x; 18 € /l2.0x; 9 € /l2.5x; 9 € /l Cell Cost200.5294.7 CPC0126 63 Glass & Encapsulati on 81 Total Power (Wp) 8577.292.677.292.6 Module (Euro/Wp) 3.313.913.093.252.58 Cost Evaluation showing only cost reduction in favourable scenario 23%

8. Prototype PRIDE Module

9. 3mm CPC showing delamination and bending

10. DayMonthPRIDE Pmax (Wp) Pride Temp (°C) BP 580 Pmax (Wp) BP 580 Temp (°C) Insolation (W/m 2 ) 179Jun5.9432.342.719.6627.7 185Jul4.6950.431.729.1 235Aug5.437.342.220.5621.3 267Sept5.149.244.421.7638.3 274Oct6.333.654.816.1655.5 305Nov5.328.343.714.2582.6 336Dec5.418.148.56.0629.1 Results from vertical array at ISET for 3 mm PRIDE Cells versus a flat plate module

11. 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.

12. 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.