A comparison study has been conducted in Hattar Pakistan to evaluate the kWhr/kWp yield from four different technologies namely Fixed silicon flat plate, Tracked silicon flat plate, Tracked 4x with one sun silicon cells and Tracked 120x with silicon LGBC cells. Global horizontal (GHI), Global normal (GNI) and Direct normal (DNI) incidence insolation data was measured simultaneously. The effect of dust build up was measured. The fixed flat plate system gave the lowest kWhr/kWp output while the Tracked flat plate and 4x system were broadly similar.

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