A. A. K. Al-Waeli, K. A. Al-Asadi and M. M. Fazleena, "The impact of Iraq climate condition on the use of solar energy applications in Iraq: A review," International Journal of Science and Engineering Investigations, vol. 6, pp. 64-73, 2017.
 Arabic, B., 2020. كهرباء كوردستان تدعو المواطنين للترشيد و ترفع الانتاج اليومي الى 3300 ميغاواط. [online]. Basnews.com. Available at:https://www.basnews.com/ar/babat/650227 [Accessed 3 December 2020].
 R. Mubarak, M. Hofmann, S. Riechelmann and G. Seckmeyer, "Comparison of modelled and measured tilted solar irradiance for photovoltaic applications," Energies, vol. 10, p. 1688, 2017.
 Q. A. Khasawneh, Q. A. Damra and O. H. Bany Salman, "Determining the Optimum Tilt Angle for Solar Applications in Northern Jordan.," Jordan Journal of Mechanical & Industrial Engineering, vol. 9, 2015.
 A. Karafil, H. Ozbay, M. Kesler and H. Parmaksiz, "Calculation of optimum fixed tilt angle of PV panels depending on solar angles and comparison of the results with experimental study conducted in summer in Bilecik, Turkey," in 2015 9th International Conference on Electrical and Electronics Engineering (ELECO), 2015.
 G. Hailu and A. S. Fung, "Optimum tilt angle and orientation of photovoltaic thermal system for application in greater Toronto area, Canada," Sustainability, vol. 11, p. 6443, 2019.
 M. Guo, H. Zang, S. Gao, T. Chen, J. Xiao, L. Cheng, Z. Wei and G. Sun, "Optimal tilt angle and orientation of photovoltaic modules using HS algorithm in different climates of China," Applied Sciences, vol. 7, p. 1028, 2017.
 H. Darhmaoui and D. Lahjouji, "Latitude based model for tilt angle optimization for solar collectors in the Mediterranean region," Energy Procedia, vol. 42, pp. 426-435, 2013.
 M. Jamil Ahmad and G. N Tiwari, "Optimization of tilt angle for solar collector to receive maximum radiation," The open renewable energy journal, vol. 2, 2009.
 N. Al-Messabi, C. Goh and Y. Li, "Heuristic grey-box modelling for photovoltaic power systems," Systems Science & Control Engineering, vol. 4, pp. 235-246, 2016.
 R. A. Messenger and A. Abtahi, Photovoltaic systems engineering, CRC press, 2017.
 I. J. Khadim, E. J. Mahdi and A. H. Ubaid, "Determining Tilt Angle for Fixed Solar Panel Tosites of Iraq's Provinces by Using the Programs on NASA and Google Earth Websites," Engineering and Technology Journal, vol. 32, pp. 498-506, 2014.
 S. Na'man, H. Y. Yacoob and O. S. Omar, "Optimum Tilt Angle for South Facing Flat Solar Collectors in Duhok City," Science Journal of University of Zakho, vol. 1, pp. 405-413, 2013.
 A. K. S. Al-Sayyab and M. K. Taher, "Optimum Tilted Angle Of Photovoltaic Cell located in northern Iraq Cities to get maximum generated electric power," in National Renewable Energies Conference and Their Applications, 2013.
 A.-S. T. Hussain, "Measuring PV Module Performance at Different Tilt Angles in Southern Iraq Based Simulation," International Journal of Engineering & Technology, vol. 7, pp. 84-88, 2018.
 A. K. S. Al-Sayyab and M. K. Taher, "Optimum Yearly Tilted Angle of Photovoltaic Cell to Receive Maximum Solar Radiation in Southern Iraq Cities," Thi-Qar University Journal for Engineering Sciences, vol. 5, pp. 1-14, 2014.
 A. M. A. Morad, A. K. S. Al-Sayyab and M. A. Abdulwahid, "Optimisation of tilted angles of a photovoltaic cell to determine the maximum generated electric power: a case study of some Iraqi cities," Case studies in thermal engineering, vol. 12, pp. 484-488, 2018.
 H. Muslim, "Solar Tilt Angle Optimization of PV Systems for Different Case Studies," EAI Endorsed Transactions on Energy Web, vol. 6, 2019.
 A. Kumar, N. S. Thakur, R. Makade and M. K. Shivhare, "Optimization of tilt angle for photovoltaic array," International Journal of Engineering Science and Technology, vol. 3, pp. 3153-3161, 2011.