PVsyst 8.1.0: Advanced Photovoltaic System Design Software

PVsyst 8.1.0 is a major update to the industry-standard software for photovoltaic system design, simulation, and performance analysis, released in April 2026 .

Key New Features in Version 8.1.0

Sub-Hourly Simulation

• Higher Accuracy: Run simulations at the native time step of weather data files (sub-hourly) for more precise modeling of PV system behavior

• Weather Data Support: Import sub-hourly weather time series via custom import or Meteonorm 9.0 DLL with "minute" option

• Flexible Switching: Toggle between hourly and sub-hourly simulation modes via radio button in main project or advanced simulation windows

• Output Files: Sub-hourly simulations generate corresponding sub-hourly time series tables

• Performance Note: Hourly simulations remain faster and recommended for iterative design; sub-hourly for final evaluations