On this repository you can find the monitoring data of the 3 PV power-plants analysed in the article "Confirmation of the power gain for solar photovoltaic systems in alpine areas" (doi: 10.3389/fenrg.2024.1372680) . Each folder contains the following two elements: 1. README.txt : describes the content of the folder. Especially it describes the plant's monitoring system's architecture and relates it to the various files included in the data sub-folder. It also provides a detailed description of all processing steps leading to the data sets as available in the data sub-folder and used in the pre-cited article. 3. data/ : sub-folder containing the file(s) used in the referenced article.