Integration of solar photovoltaics of 25 kWp capacity has been achieved in an existing building of the cafeteria on the campus of the Indian Institute of Technology, Delhi by creating a solar roof covering an area of about 250 m2. The photovoltaic array is inclined at an angle of 15° from the horizontal and faces due south. The architectural challenge of the project lies in achieving integration of the system with the existing habitat, to be aesthetically appealing, structurally sound and enclosing a space which is proposed for commercial usage and exhibition purposes. The interior space of the solar photovoltaic roof has to be protected from the summer heat and for the same a composite system of natural and mechanised ventilation and cooling systems is proposed. The design of the solar photovoltaic roof has been conceived, the architectural and interior designs finalised. A model has been prepared for a perspective view and clarity of form.