ÖzetKüresel ısınma sebebiyle, elektrik üretiminde karbon kaynaklı santrallerden, yenilenebilir enerji santrallerine zorunlu bir yönelim gerçekleşmiştir. Ülkemizde, yenilenebilir enerji santrallerinden, hidroelektrik ve rüzgar enerjisi konusunda kurulu güç artışının yanına son yıllarda fotovoltaik sistemler de katılmıştır. Bu çalışmada ise yaygınlığı ülkemizde hızlı bir şekilde artan çatı üstü fotovoltaik ssistemler konusu Isparta ili için ele alınmıştır. 18°, 24° ve 35° yönelim açılarıyla engelebeli çatılar, 0° ve 180° azimut değerleri ile, düz çatılar ise yine aynı yönelim açılarında 0° azimut değeri ile simüle edilerek toplamda 6 farklı simülasyon ve üç boyutlu modelleme gerçekleştirilmiştir. Simülasyon sonuçlarına bakıldığında en düşük elektrik üretim değerinin engebeli 35° eğimde çatı üstü fotovoltaik sistemde, en yüksek elektrik üretim değerinin düz ve 35° yönelim açısında olan çatı üstü fotovoltaik sistemde olduğu tespit edilmiştir. Bu iki çatı arasında elektrik üretim farkının da 12415 kWh olduğu hesaplanmıştır.

Due to increasing wars and global warming, the issue of providing the supply-demand balance in energy and food is becoming more important daily. When the issue of providing the electricity needed in modern greenhouses and consuming the energy where it is produced are evaluated together, rooftop applications in greenhouses become important. In this study, a photovoltaic system on a greenhouse in an area of 5031.6 m2 was modeled three-dimensionally using PVsyst software in north-south, and east-west orientations at 10°, 20° and 35° angles, and 6 different simulation studies were performed. By determining the cost of the greenhouse and above-greenhouse photovoltaic system to be constituted, an economic analysis study was performed at the point of OG single-term and OG double-term tariffs in the Energy Market Regulatory Authority (EPDK) tariff tables. As a result, the highest electricity production of the power plant was eventuated as 1579.2 MWh at 10° east-west orientation. In the case of the sale of electricity produced in the photovoltaic system installed above the greenhouse, it has been calculated that the OG single-term tariff brings 2 162 443.087 TL, and the OG double-term tariff 2 203 707.83 TL annual income. The lowest electricity generation was at 35° north-south orientation and was 1392.3 MWh. Based on this production value, it has been calculated that in the case of electricity sales, the OG monomial tariff brings an annual income of 1 894 757.401 TL, and the OG binomial tariff brings 1 930 914.04 TL.

Turkiye is a country rich in renewable energy resources, one of which is its tremendous potential, especially in solar energy. Investments in photovoltaic systems are increasing day by day in order to evaluate this potential The simulations of these systems, which will be established while making investment plans, are very important in terms of investment return times. In this study, information and data were obtained from a working rooftop photovoltaic system and simulations were carried out using PVsyst and system advisor model (SAM) software. The simulation data was compared with the power plant's electricity generation data using statistical analysis methods of deviation, Root Mean Square Error (RMSD), and Mean Absolute Deviation (MAD). When all these analysis methods were evaluated, it was seen that the error and deviation values of the SAM software were lower on an annual basis. On the other hand, it has been determined that the error and deviation values of the PVsyst software are lower on a monthly basis.