Maintaining systematic solar resource monitoring at high quality and without gaps is challenging, due to potential issues in data acquisition, storage and transmission. Data from ground-mounted sensors are prone to errors for reasons such as shading, misalignment of instruments, calibration issues, irregular or insufficient cleaning, missing data, etc. Solargis data allows for quality control, error detection and data gap filling.
Solargis data make it possible to independently confirm validity of performance ratio calculations based on ground measurements. As the satellite data come from an independent service provider, they can also be used for settling contractual arguments relating to doubts about measurements from pyranometers.
Installing and maintaining the pyranometers is relatively expensive and challenging. Therefore, it is typically not an option for residential and small commercial photovoltaic (PV) projects. In a case of portfolio of smaller systems, use of Solargis data is a practical approach for performance evaluation.
It is often asked to what extent a particular month or year had received higher or lower solar radiation compared to the long-term average. Solargis data are the most suitable for such an exercise as they record stable, high-resolution, map based historical archive of up to 22 years.
Receive regular updates of Solargis data for performance monitoring of photovoltaic systems
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