Recently, we have become more conscious about the impact of the industrial and technological revolution on the environment and human health which is basically due to the use of fossil fuel. In the development of energy sources in Egypt for the 21st century, it is necessary to replace by solar energy as one of the most promising and available renewable energy sources. Egypt is considered one of the solar belt countries with high intensity of direct solar radiation from north to south which provides a variety of solar energy applications. In Egypt existing building sector is responsible for use of large amount of energy for lighting, heating and cooling. As the amount of existing buildings is much higher than the number of buildings being built, while many of these existing buildings need improvements. This provides an opportunity to use photovoltaics (PVs) integration technologies to reduce primary energy usage and greenhouse gas emissions. At the moment, PVs technologies are available in relatively competitive prices; solar radiation is converted into electricity providing a cleaner, environmentally friendly alternative to reduce the environmental impact of buildings. The main reason for these technologies to stay unpopular is the lack of good architectural quality that meets the desired design considerations. The main aim of this paper is to pave possible ways for architects and engineers to use the building integrated photovoltaic (BIPV) systems with innovative approaches which can serve the dual function of emphasis on the architectural expression and power generation. Introduce a model of architectural forming and economic analysis of BIPV system for an existing campus building in Egypt (the Architectural Department in the Faculty of Engineering in Mansoura University). This will encourage the responsible authorities and operators of existing buildings in Egypt to implement sustainable practices and reduce the environmental impacts of buildings over their functional life cycles.