Optimum Tilt Angle and Solar Radiation of Photovoltaic Modules for Gulf Collaboration Council Countries

Figure 11

A comparison of optimum tilt angles based on PVWatts and by the mathematical model of Nijegorodov and P. Talebizadeh on Oman (a), UAE (b), KSA (c), Qatar (d), Bahrain (e), and Kuwait (f).

(a)

(b)

(c)

(d)

(e)

(f)