Photovoltaic DC yield maps for all Morocco validated with ground measurements

Abstract In Morocco, Law 58/2015 has legalized the connection of photovoltaic systems on the low-voltage grid and the country should probably be adopting the net-metering approach. Since the electricity distributor should only buy a7. small part of the electricity injected, system over-sizing becomes critical for the investor. In these conditions, it is critical to know the photovoltaic yield generated at any specific Moroccan location. The objective of this study consists on calculating, generating and drawing precise maps of grid-connected photovoltaic DC yields for three silicon technologies (monocrystalline, polycrystalline and amorphous) for all Morocco. For this, (i) we have measured and collected 2466 daily DC yields spread over 20 sites for each of the three technologies and validated three models matching the experimental measurements. Then, (ii) we have selected 1392 representative points covering all Morocco (resolution 0.25°) for which, the three validated models gave the long-term average of photovoltaic DC yields using appropriated input data from Solar Med Atlas. And finally, (iii) we have drawn the long term monthly average of daily PV DC yields maps with the help of ArcGIS set up to use the ordinary kriging method to interpolate between the 1392 points.