Radiant cooling unit (RCU) is one of the most promising technologies towards energy efficient buildings. Integrating low-grade thermal energy driven absorption cooler (AC) with the RCU is becoming an attractive alternative to the compression cooler (CC) based RCU. The present study aims to investigate the performance of AC driven RCU for achieving the net-zero energy building status target using the EnergyPlus simulation tool. In particular, AC-coupled RCU and the CC-driven ventilation unit (VU) are considered for the building's air conditioning. The considered building dimensions are 50 m × 33 m and have a total 4950 m² of floor area, approximately. Here, the electricity requirement of the building for lighting, cooling, equipment, etc., is accomplished by installing solar photovoltaic (PV) on the roof. Moreover, a loop of solar thermal collector (500 m²) is installed to fulfill the heating requirement of AC. An auxiliary heating element is also provided with a solar collector loop to address any solar energy intermittency. In order to evaluate the net zero energy target of the building, simulations are done for different installed areas of solar PV (varying between 500 m² - 800 m²) under the weather conditions of composite climate. Simulation results reveal that the target of net-zero building under considered solar PV area is 31.8% - 50.9%. It is also observed that, as solar PV installation area increases, the net energy demand decreases due to the shading effect, and even with the maximum installation of solar PV, fully gridindependent/ complete net-zero building cannot be ensured.