[v7.2] PVsyst – Powerful software for your photovoltaic systems

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PVsyst is a famous solar photovoltaic system design software for simulation design and data analysis, developed by PVSyst from Switzerland. As a fully-functional photovoltaic system simulation software, it is able to carry out modeling and simulation of the photovoltaic power generation system, analyze various factors affecting the electric energy production, and finally calculate the generating capacity of the entire photovoltaic power generation system. It is a software package commonly used in the photovoltaic industry for completely researching, measuring, simulating and analyzing the photovoltaic systems.

PVsyst provides preliminary design tools, engineering design tools, database devices management tools and results simulation & comparison tools. It can set different environmental parameters (including solar radiation, temperature, latitude and longitude, building height, and so on) according to different types of solar systems (such as independently operated ones, the ones connected to the mains) and different types of solar cells (such as monocrystalline silicon, polycrystalline silicon, different brand, different model), and quickly and efficiently calculate the total amount of electricity generated by solar cells.

In addition, PVsyst contains abundant meteorological resource libraries from NASA and Meteonorm, photovoltaic modules database, inverters database, quantitative analysis tools, and so on; has the ability to import meteo data; accepts personal data from many different sources (including meteorological data); allows to search for locations directly using Google Maps; can define the locations of all modules of the system in the 3D fields; can calculate the input circuit of each inverter, and more.

// Key Features //

System Design Board
The system design is based on a quick and simple procedure:

  • Specify the desired power or available area
  • Choose the PV module from the internal database
  • Choose the inverter from the internal database

and PVsyst will propose an array/system configuration, that allows you to conduct a preliminary simulation.

The software embeds a color-coded warning / errors messaging system. If there’s a mismatch, issue, warning with your design, you will be warned within the proper frame.

System sizing: Visual tool
A specific tool gathers all constraints for the sizing of the system :

For the number of modules in a series: the upper diagram shows the I/V curve of the PV array, together with the MPPT range, voltage, power, and current limits of the inverter.

  • For the inverter sizing: the second graph displays the annual distribution of the array power, with the array and inverter nominal power
  • The optimal sizing of the inverter is based on the acceptable overload loss throughout the year. It usually leads to over-size the power ratio (array nominal power by respect to the inverter nom. AC power), by a factor of 1.25. After a good system sizing, you can define different losses like far and near shadings using a full 3D editor for the definition of the environmental and near shading conditions. Specialized tools are also provided for the evaluation of the wiring losses (and other losses like the module quality), the mismatch between modules, soiling, thermal behavior according to the mechanical mounting, system unavailability, etc.
3D Shading Scene
  • User-friendly object manipulation and creation
  • Easy import from external CAD tools (Sketchup, Helios3D, AutoCAD, etc)
  • Quick design: sheds layout, zones of tables
  • Orientation identification and scene validation tools
  • Sun Point of View Simulation
  • Multithreaded shading calculations
Simulation and results report
The simulation calculates the distribution of energies throughout the year.

Main results:

  1. The total energy production [MWh/y] is essential for the evaluation of the PV system’s profitability.
  2. The Performance Ratio (PR [%]) describes the quality of the system itself.
  3. The specific energy [kWh/kWp] is an indicator of production based on the available irradiation (location and orientation).
  • Shows the main energies and gains/losses involved in the simulation
  • Powerful tool for a quick analysis of the system’s behavior, and potential improvements in the design.
Grid Storage
Storage in a grid system is a complex feature, as it may have different objectives, which lead to different strategies and different PV system configurations. Up to now, we have developed 3 strategies in PVsyst:

  • the storage for enhancing the self-consumption of the PV system owner.
  • a storage for ensuring peak shaving, when the possible power injected into the grid is limited.
  • a storage for the continuity of the user’s electricity feeding, when the grid is weak and often unavailable.

In each case the energy fluxes are different and lead to different simulation results. As an example we show the energies involved in a self-consumption PV system.

Meteonorm included – 7.2
  • Direct search for a location using OpenLayers and GeoNames
  • Full Meteonorm v7.2 interpolation program for any location on earth
PV modules and Model Management, Inverters
PV modules and model Management

  • Sandia model implementation and comparison with PVsyst model
  • Tools for optimization parameters (low-light, I/V curve)
  • New parameters (tolerance, IAM profile, Vmax UL)
  • Optimizers (SolarEdge and Maxim)


  • New parameters (Transfo, CEC efficiency)
  • Multi-MPPT with asymmetric inputs (unbalanced) and advanced Power Sharing
  • Improvement of choice by manufacturer
Multi-year batch simulation:

  • For different operating years, same meteo data
  • For a set of yearly meteo data files
  • Results and graphs on the report
Bifacial calculations
Bifacial model for tracking 1-axis systems (unlimited trackers)

  • Improved the import parameters from the “real” system defined in 3D
  • Conceptual error in the model, which lead to an underestimation of the rear side irradiance by a factor of 1/GCR (i.e. a factor of 2 or more!)
  • Add the contribution of the Diffuse seen from the rear side.
  • Albedo in monthly values.Seasonal orientation: possibility of negative summer tilt for low Latitudes
Batch calculations
Batch mode and sheds optimization tool

  • Modification of the pitch as parameter
  • Bi-facial: height above ground as parameter
Economic evaluation
System cost evaluation:

  • CAPEX (installation cost)
  • OPEX (operating costs)
  • Abiltiy to define customized costs according to own system

Pricing strategy:

  • Detailed feed-in tariffs definition: fixed, variable or customized, hourly or seasonal variations
  • Selling policy: connection tax, yearly tariff variation, duration of tariff warranty
  • Parameters for self consumption economy

Advanced financial analysis:

  • Investment funds distribution: own funds, loans or subsidies
  • NPV (Net Present Value) and LCOE (Levelized Cost of Energy) calculation
  • Inflation, discount rate and detailed depreciation management

Profitability analysis :

  • Yearly balance, payback period and return on investment rate
  • Graphical results: tables, plots and pie charts

// System Requirements //

  • Microsoft Visual C++ 2019 Redistributable Packages

// Edition Statement //

AppNee provides the PVsyst Professional Edition multilingual full installers and unlocked files, as well as portable full registered versions for Windows 32-bit & 64-bit.

// Installation Notes //

for v6.70+ Setup versions:

  1. Download and install PVsyst
  2. Copy the unlocked files to installation folder and overwrite
  3. Done

// Related Links //

// Download URLs //

License Version Download Size
Professional Edition v6.7.0 reserved 107 MB
v7.2.11 167 MB


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