Answer
PVsyst is software for designing, sizing and simulating photovoltaic systems. Its current documentation describes equipment selection, shading models, weather inputs and production-and-loss analysis. Engineers use the results to investigate a specified project and compare variants. A simulation remains conditional on the inputs and method; a PVsyst report is not, by itself, a production guarantee or proof that a lender accepts the analysis.
What PVsyst does
PVsyst’s version 8 product page describes grid-connected, standalone and pumping-system design and simulation, equipment sizing, shading, storage and economic evaluation. These are vendor-reported capabilities, checked September 30, 2026. This article is a documentation-based explanation, not a retained hands-on product test.
PVsyst is an analysis environment rather than a source of automatically correct project assumptions. The operator needs to define the site, system and relevant losses, then inspect the results. A report should identify the modeled equipment and energy boundary.
How a project moves through simulation
| Stage | Project information to retain |
|---|---|
| Site and resource | Coordinates, weather source, period and horizon |
| Geometry | Array orientation and shading scene |
| Equipment | Module and inverter data, ratings and configuration |
| Loss assumptions | Optical, temperature, electrical and operating inputs |
| Simulation | Software version, variant and time-step basis |
| Review | Energy boundary, loss results and changed assumptions |
The table is an editorial review checklist. It does not establish that a default value is appropriate for every installation. Keep the source and revision behind each project input.
PVsyst’s simulation documentation permits hourly simulation or an available sub-hourly time step where the weather data support it. Results retain parameters for the project variant and support monthly and detailed time-step review. It is therefore inaccurate to describe the current product as exclusively hourly without qualification.
Shading and layout: define the actual task
PVsyst documents 3D near-shading scene construction and import, horizon shading and module-layout electrical shading calculations. See its shading documentation. Do not describe it as incapable of visual geometry or module layout simply to contrast it with another vendor.
A shading model and a construction drawing package serve different purposes. Ask what the team needs to deliver: a modeled scene, a production analysis, a permit drawing set, a procurement list or a customer proposal. Inspect each required output in the current product rather than assuming that one label covers the whole workflow.
What to examine in a production report
Check the resource, equipment, orientation, shading and loss assumptions. Identify whether reported energy is at the array, inverter or grid boundary. Use specific yield and performance ratio with their stated definitions when comparing variants.
If two scenarios differ, record exactly which inputs changed. A higher modeled energy total does not establish that the design is cheaper, permitted or preferable for the customer. Retain the variant files and a review record so another engineer can reproduce the comparison.
P50/P90 and the word “bankable”
An uncertainty analysis needs a stated method, horizon and basis. Read the P50/P90 explanation before treating a single percentage as a conservative output guarantee.
Do not infer certification, universal lender acceptance or regulatory compliance from the software name. A lender or independent engineer may impose project-specific requirements for data, assumptions and review. Obtain those requirements and reconcile the submitted report to them.
Published price and licence choices
As checked September 30, 2026, the public PVsyst shop lists PVsyst 8 Professional at CHF 700 per year, with grouped-order discounts and separately qualified education and research options. PVsystCLI is a separate listed licence category. Public list pricing is available; registration for a quote does not make that published price absent.
Confirm the appropriate licence, computer allocation, commercial-use rights, applicable taxes and quote before purchasing. Do not treat an educational price as an unrestricted business price or silently convert CHF into a different currency. Pricing can change; use the vendor’s current offer at procurement.
Installation and learning
The vendor’s current requirements describe Windows operation and one licence per computer for PVsyst. For a Mac setup, consult the vendor’s linked instructions and verify that the proposed environment is supported. Do not assume that a virtual machine, remote workspace or shared drive is supported simply because it starts the application.
Use the official PDF tutorials for the relevant version and system type. Start with a documented sample, then compare a representative project while recording assumptions and questions. This article does not promise a universal learning time.
Where it fits alongside other solar software
Compare workflows against the actual required outputs and handoffs. If a sales team needs proposals while engineers need a detailed production model, establish how equipment, layout and assumptions remain consistent between tools. Do not claim a verified integration without a documented supported exchange and a checked project.
For SurgePV’s simulation workflow, evaluate the available inputs and outputs with the same representative project. This publisher is SurgePV; the discussion is not an independent comparative benchmark and makes no claim that SurgePV replaces every PVsyst task.
Reviewed September 30, 2026 against linked vendor documentation. Capabilities and list pricing are vendor-reported; project-review guidance is editorial interpretation. No firsthand testing, certification or observed performance advantage is claimed.
Where this fits
This article is part of SurgePV's Solar Design hub, which works through the topic from first principles to the decisions a project team actually has to make.
