Design and operating photovoltaic power system-interactive the electric utility to supply residential loads in Egypt

Conservation and independent on conventional fuel for electric power generation is the main target ofMinistry of Electricity and Energy (MEE) in Egypt. So, different types of renewable energy sources (RESs) are used with the bulk power supply in Egypt. Solar energy is the main type of these RESs pertaining the metrological conditions of Egypt. This is due to the sunrise is 3000 – 4000 hours per year with an average insolation of 5–7 kWh / m² at different regions of Egypt. Therefore, this work aims to design and operate solar photovoltaic (PV) power system with the electric utility to supply residential loads. An approach is presented here to design and operate PV system to supply these loads during the sunshine hours, while the electric utility is used through the other periods of the day. This approach has been applied for designing this power system at different regions of Egypt. Also, this power system has been operated to develop its impact on the conventional fuel conservation, environment pollution and utility bill of the owner of this PV system at the considered sites of Egypt.