الفهرس 
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Abstract
In response to the escalating electrical power shortage in Egypt, especially in the summer months, it has been within the framework of the Egyptian power management strategy to raise the share of renewable sources in electricity generation. Early experiences of developed countries have proven Solar Energy to be a viable and successful renewable energy source to implement within the building envelopes of existing residential buildings. This has been the stimulator for choosing PY -generated electricity as a topic for this research paper especially for the fact that Egypt possesses an abundance of solar energy. The paper focuses on investigating the applicability of solar PY -systems for existing residential buildings and tries to reveal possibilities of better power management strategies through upgrading the existing conventional power grids to the nowadays trending Smart Grids. The paper applies a Solar Field Survey that focuses on small residential community located in Alexandria. Egypt. Results have proven on-roof PY -systems to be very well applicable for the intended purpose. and results could even be enhanced ifSmart Power Management is applied.