Multi-Si Users should consider the regional solar radiation data and operating conditions specific to the central region of Ningxia, China when using this dataset. It is important to note that the data is designed for a multi-Si PV system with a specified lifespan of 30 years, serving as a study subject with a 10 MWp capacity. When integrating this data into LCA models, users must account for the functional lifespan and region-specific solar irradiance to accurately assess the environmental impacts of the PV system. Attention should be given to the methodological consistency with other datasets in the LCA and to the alignment with the goal and scope of the study concerning the use of metallurgical route multi-crystalline silicon.