Study on Renewable Energy Resources, Oman - authority for ...

0.5
0.4
Levelized Cost of Energy vs. PV Capital Multiplier
Fixed
PV Slope = 25 deg
PV Azimuth = 0 deg
0.3
0.2
$
0.1
0.0
0.4 0.6 0.8 1.0
PV Capital Multiplier
The production of electricity from PV panels depends of course of the orientation and slope of the
panels. The following graph shows the influence of this on the levelised cost of electricity. The
reference is the red circle. For Oman a slope from 0 to 30 degree is optimum. The slope should never be
less than 15 so that water can drain off and clean the panels. For this small slope the production is rather
independent on the azimuth meaning that the PV panels can be oriented freely. Only through north there
is an increased cost. For vertical PV (on facades for example) it appears that the cost of production (the
solar output) is increased considerably, in particular on north facades.
This calculation only consider the yearly production, the distribution over the year is also very
dependent on the slope and orientation. Sloped PV panels tend to giver lower production in the
summertime when demand is highest.
Fig. A 12.2 Levelized cost of electricity from a 20 kW grid connected PV system as a function of the
slope (Y-axis, 0=horizontal, 90=vertical) and the azimuth (y-axis, 0=south, -90=Vest, 180= north).