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Transparent dye-sensitized solar cells (DSSCs) can be coupled within a building's architecture to provide daylighting and electrical power simultaneously. In this work, the relationship between the transparency and performance of DSSCs is studied by changing the TiO₂ electrode thickness. The 10 µm thickness device shows a power conversion efficiency of 5.93% and a J_sc of 12.75 mA/cm² with 37% transparency in the visible range. However, the performance loss in DSSCs during the scale up process is a potential drawback. This can be addressed using an optical concentrator with DSSC to generate more power from small size devices. Here, a compound parabolic concentrator (CPC) is coupled with DSSCs and its performance is compared to a scaled-up device (approx. 4 times). Furthermore, the impact of operating temperature on the performance of the bare and concentrator-coupled devices is discussed in …