In Nigeria, grid connected solar based system are not common as most connections are stand-alone This work analyze costing of proposed solar photovoltaic systems performance for Faculty of Engineering (FOE), University of Port Harcourt. With unit cost of grid power at ₦48.35/kWh based on MYTO sets for a 10-year tariff path with biannual minor reviews for Port Harcourt Electricity Distribution Company (PHEDC), it is expected that FOE spends ₦5,894,541.9 annually on electricity consumption when the supply is fully dependent on PHEDC.it is worthy to note that the generation source is fossil fuel which is harmful to the ecosystem. If however solar photovoltaic source as an alternative means of power generation is used at a unit cost of electricity production from proposed PV plant at the rate of ₦75/kWh, simple payback time is 7 years and 4 months and performance ratio is 81.8%. The proposed PV plant is expected to meet power requirement of FOE efficiently and reliably. Within life span of 25 years, 907.666 tons of carbon that would have wreaked havoc to the environment would have been saved. Various losses were also considered and calculated accordingly. Effect of weather condition on the overall performance was also discussed. The proposed PV plant is viable and will address the lingering energy crisis in the faculty. Contribution/ Originality:This study contributes to existing literature by analyzing costing of proposed solar photovoltaic systems performance for Faculty of Engineering (FOE), University of Port Harcourt. INTRODUCTIONData about Nigeria solar energy capacity and projects is lacking. As a result of this, assessing solar integration status is quite difficult. In recent study by Ohunakin, et al. [1] solar integration is classified into grid-tie and standalone system. The study reveals that grid-connected solar system does not exist in Nigeria, and that most of the solar systems are stand-alone application. Ozoegwu, et al. [2] indicates that, regarding solar energy application and projects in Nigeria, there is no comprehensive data to rely on, and that data from various websites are difficult to harmonize. Hence, the only source of information to rely on is Nigerian Electricity Regulation Commission (NERC). According to the solar integration projects endorsed by NERC, 364 MW capacity of solar projects would have been completed between 2015 and 2030 at various geographical locations of Nigeria. Table 1 shows proposed Nigeria Solar Energy Projects Details as at 2014.

Electrification of Faculty of Engineering (FOE) located in Choba Campus in University of Port Harcourt is often realized through distribution network from Port Harcourt Electricity Distribution Company (PHEDC). FOE buildings, each consists of two floors with basement, academic staff offices, administrative rooms and public facilities. Huge sum of money is spent daily to run generators and noise pollution has come to live with us. Nigeria however has immense exposure to solar radiation all through the year. It has highest daily solar radiation of 7.0KWh/m 2 /day and lowest of 3.5KWh/m 2 /day. Choba has average radiation of 4.55kWh/m 2 /day and temperature of 27.23 0 C. Choba is at 4 0 49'27'' North latitude and 7 0 2'1'' East longitude and altitude (elevation) of 20m (64ft). Load profile for FOE was carried out to determine the number of solar panels and inverter rating. Monthly average radiation was obtained from Nigeria meteorological agency between January 2014 to December 2018.The proposed PV system plant capacity is estimated at 100kW based on estimated load profile. Various tools such as system yield factor, capacity utilization factor, performance ratio were used in carrying out performance of 100kW PV system. Plots of I-V characteristics at constant irradiance, P-V characteristics at constant temperature and irradiance and efficiency curve of P-V panels were obtained. The PV is expected to meet 123,228.38kWh annual load demand for FOE, using PVsyst software. This supply period of electricity is between official hours of 8am to 4pm daily and estimated that annual DC energy generated from the system is 126619kWh/year, whereas available energy exported is 121914kWh/year. Contribution/ Originality: The proposed PV system plant capacity is estimated at 100kW based on estimated load profile. Various tools such as system yield factor, capacity utilization factor, performance ratio were used in carrying out performance of 100kW PV system. Plots of I-V characteristics at constant irradiance, P-V characteristics at constant temperature and irradiance and efficiency curve of P-V panels were obtained. The PV is expected to meet 123,228.38kWh annual load demand for FOE, using PVsyst software. This supply period of electricity is between official hours of 8am to 4pm daily and estimated that annual DC energy generated from the system is 126619kWh/year, whereas available energy exported is 121914kWh/year.