Presentation Description: It is well known that irradiance is the key driver of solar energy production. For this reason, lenders, independent engineers, and developers have emphasized global horizontal irradiation for energy production estimates. However, multiple meteorological parameters have a meaningful impact on energy. Diffuse irradiation, albedo, temperature, wind speed, relative humidity and precipitation all impact system performance. These parameters should be considered for high-quality solar energy estimates. This presentation evaluates how secondary meteorological parameters impact energy production estimates. The analysis quantifies how energy production is sensitive to these input assumptions. Finally, the presentation shows how energy uncertainty can be reduced by giving appropriate attention to the most meaningful meteorological contributors to energy production.
The study illustrates how solar energy is sensitive to meteorological values (besides the obvious case of irradiance) and propose a scale of magnitude of the impacts for each variable (Albedo, Diffuse Irradiance, Temperature, Wind Speed Relative Humidity).
This study also clarifies when additional diligence may be warranted when defining these inputs in order to reduce energy modeling uncertainty.