Building-Integrated Photovoltaic (BIPV) is a smart energy production system that incorporates solar PV panels as part of the roof, windows, facades and shading devices. When active heat recovery is combined with BIPV systems either in closed loop (like PV-T with liquid loop) or in an open loop with forced air they are known as building-integrated photovoltaic-thermal (BIPVT systems). This paper reviews the BIPV and BIPVT technology. The paper shows various technologies involved in BIPV and BIPVT as well as their function, cost and aesthetics. In addition a review of the application of BIPV and BIPVT installations is described. In comparison to BIPV systems, BIPVT system has significant benefits and potential for wide use in buildings. The building integrated photovoltaic-thermal system design (BIPVT) is also becoming popular among architects and design engineers.
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