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Hi PVSYST Team, Thank you for the implementation of the sub-hourly simulation feature in PVsyst 8.1. It is something many of us have been waiting for. I am currently trying to generate meteorological data with a 15-minute resolution using different sources in PVsyst, and I have tested the following approaches: Pull with Meteonorm 9: it seems to only allow hourly data or minute-level data. While minute data could technically work, generating datasets at that resolution can become quite heavy and time-consuming for large projects with complex topography. Synthetic data generation: https://www.pvsyst.com/help/meteo-database/synthetic-data-generation/execute-generation.html From what I can see, this option also only allows hourly or 1-minute frequency. At the moment, the only way I have found to work with 15-minute data is by using the “Import a custom file” option. With the new import tool it is possible to specify a 15-minute timestep, which works well if the dataset already exists externally. My question is the following: Is there any option within PVsyst meteo databases (e.g., Meteonorm or tool synthetic generation) to directly generate sub-hourly data with a specific timestep such as 10, 15, or 30 minutes, instead of only hourly or 1-minute resolution? Or is importing a custom dataset currently the only workflow for these intermediate time resolutions? Thanks in advance for any guidance.