Abstract
The application of the On-grid PV power systems is currently experiencing significant increase and expanding vastly as an alternative source of energy provider for different buildings in Palestine. In the Palestinian territories most of the electricity is provided by the neighboring countries which imposes burden on the Palestinian economy due the insecurity of the electricity supply and fluctuation in its tariff especially in the last years. Palestine is very rich in the solar resources with an annual average of 5.4 peak sun shine hours and has a great potential for PV powered projects, this paper presents a 12-month-long performance evaluation of the 7.68 kWp grid-connected PV systems on the rooftop of each of the three schools in Palestine: Al-Razi Boys School, Almueh Boys School & Khawleh Bent Al Azwar Girls. The performance of implemented PV systems show that the average performance ratio was 78 %, the average annual energy produces by each system equal 10.930 MWh/year. The results of economic analyses are encouraging to intensify the use of such PV school systems since the payback period of such a system is less than 5 years, the cost of kWh produced is around 0.1 US $, the internal rate of return around 20%. Besides these results, this paper presents also the impacts of PV school systems on the electric grid represented in decreasing the losses, and raising the voltage level, and the effect of PV systems on the environment.
Highlights
Palestine is a developing nation in great need of all types of energy for economic growth and human development
Palestinian Authority ratified the “Palestinian Renewable Energy Strategy” which aims at producing 130 MW of electricity by year 2020, grid connected photovoltaic (PV) system is one of the PV technology where an electricity generating by solar panel is connected to the utility grid
Systems on systems on ground or on the roofs of buildings started to spread in Palestine since 5 years due to decreasing the PV price and creation of governmental regulations supporting the use of renewable energy (Ibrik, 2008)
Summary
Palestine is a developing nation in great need of all types of energy for economic growth and human development. The rooftop solar PV systems for schools will provide several benefits for Palestinian economy, such projects will create significant savings in the cost of electricity bills for schools, it will cover part of the schools’ expenses, will creating awareness of green power in public schools and weaving sustainable energy practices into Palestine’s teaching environment, such projects will generate benefits for Palestinian electricity distribution companies and municipalities by making electricity available at lower costs than what is currently available from.
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