Solar professionals use more and more satellite derived irradiation data in both utility solar parks and in small installations, as they are easy to acquire, have a very high availability, and provide a high time resolution & spatial coverage. When comparing the maintenance needed with on-site measurement devices, satellite derived irradiation data are often used as input for long-term yield assessment as well as for reference yield monitoring & business reporting.
3E and Kipp & Zonen recently published an extensive validation of more than 200 weather stations, showing that highly accurate irradiation data – in the order of ±2.5% – can be retrieved for almost any site in Europe when using state-of-the-art satellite derived irradiation data from 3E’s solar data service (https://solardata.3e.eu).
This high accuracy enables the calculation of bankable KPIs and the quick detection of production deviations for a more profitable operation.
In the study, 3E’s state-of-the-art satellite derived irradiation data is constantly compared to the data of well-maintained public weather stations leading to constant improvement of the used irradiance derivation algorithms. As the results of the analysis show, the on-site data and satellite derived data are highly complementary and should be used together to obtain redundancy and cross checks for accurate data.
You can request the full white paper below.