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Hello, Thank you for your inquiry. We confirm that in PV*SOL premium 2026, you can only generate new climate datasets using Meteonorm 9 data. However, you can continue to use your own climate datasets based on Meteonorm 8.2 data for simulations. If you select a custom climate dataset based on Meteonorm 8.2 data from the drop-down menu in PV*SOL premium 2026, the simulation will be performed using Meteonorm 8.2 data. Unfortunately, we are not permitted to integrate multiple Meteonorm versions into a single version of PV*SOL premium. We obtain the data from Meteonorm and have no control over the data itself; we simply integrate it into PV*SOL premium. Therefore, only the current Meteonorm 9 version can be used in the current version of PV*SOL premium 2026. If you wish to work with Meteonorm 8.2 data, you must use PV*SOL premium 2025 R10. We have sent you an email with the download link. Before doing so, you must uninstall two applications: both PV*SOL premium 2026 and MeteoSyn. If you wish to use PV*SOL premium 2026 on a second computer, you can transfer the Meteonorm 8.2 data from the first computer to the second by importing the WBV files from the directory "C:\ProgramData\Valentin EnergieSoftware\MeteoSyn\WBV\_userfiles\ZAF" into PV*SOL premium 2026:   Any project file (*.pvprj) started in PV*SOL premium 2025 R10 can be opened in PV*SOL premium 2026. The climate dataset based on Meteonorm 8.2 data will then be automatically added to the list of available climate datasets in PV*SOL premium 2026.

We are currently on Meteonorm 9.0, is it possible to run a simulation using older Meteonorm 8.2? When I select the attached my simulation still runs using Meteonorm 9.0.

You have to be in the "Object View" - Tab to see this right-click option. It does not work in any other view, especially "Module Coverage", which confused me in the beginning.

Dear Haydn, Thank you for your inquiry. In the hourly simulation, hourly generation and consumption values are simulated and compared, and the self-consumption rate is determined from them. With a generation of 800 kWh and a consumption of 1,000 kWh, self-consumption in that hour is 100%. In the minute-by-minute simulation using half-hourly consumption values, minute-by-minute generation values are compared with half-hourly consumption values. No minute-by-minute consumption values are generated.

Dear Mark, Thank you for your inquiry. The commas must be removed. Please find enclosed the CSV file we have edited. Wannie Zorzetto Load Profile VAL.csv