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Solar photovoltaic technology is a mature, stable and sustainable energy solution with important social and economic benefits. This study aims to investigate the technical and economic feasibility of installing solar PV systems on the building roofs in the university campus. The techno-economic analysis was carried out under three installation scenarios: PV modules parallel to the pitched roof, PV modules aligned at the optimal tilt angle on flat roof and pitched roof, respectively. The results show that, the flat roof has the potential installed capacity of 3.82 MW with an annual generation capacity of 4.51 GMh, while the pitched roof has the potential installed capacity of 2.45 MW and 2.64 MW with an annual generation capacity of 2.89 GWh and 3.11 GWh depending on two installation orientations and tilt angles, respectively. The economic analysis of the above three scenarios shows that all PV systems are in profit and positive net cash flow in year 5 for PV projects installed at optimal tilt on flat roofs and parallel to the roof on pitched roofs, and positive net cash flow in year 6 for PV projects installed at optimal tilt on pitched roofs.