Towards Net Zero Electric Energy For Tripoli University Hospital

Electrical energy is an essential source for our life, customers everywhere are concerned about their electrical bill at the end of the month. Nowadays, everyone is looking either for cutting the electrical bill or for zero electric energy buildings. Zero electric buildings can only be achieved by a free energy source, one of the available free sources are renewable energy sources. Solar energy is a renewable and clean energy source that is available almost everywhere, Photovoltaic conversion of solar energy has been used worldwide and became popular for generating electricity. In this paper, we are seeking the achievement of a Net Zero-Electrical Energy Building for Tripoli University Hospital located in Tripoli city with a capacity of 1200 beds. The hospital's total area is 27 hectares, the average monthly electric energy consumption throughout the year is 1,079,733KWh/month. The daily average direct normal irradiance at Tripoli (DNI) is 5.368KWh/m2/day.The system which will be designed is a grid-connected system that interacts with the electric utility grid to supply the hospital during nighttime while using solar energy during daytime, and sending the excess energy to the grid. The designed system was simulated using PVSyst simulation program.It was found that the high solar irradiance and large free areas in the site are capable of generating more electric energy on a yearly average than the entire building totally consumes.