The solar PV system design software, complete, reliable, innovative. Try for free the SMART solution to design PV systems in a more professional manner!


Solarius-PV is the professional Solar PV calculator software for designing photovoltaic systems and that is already used by thousands of professionals for their daily work.


  • PV systems sizing with guided procedures
  • Solar radiation values from PVGIS Climate Data
  • Calculate the effects of PV shading from images or photographs
  • PV system schematic diagrams (panels, inverters, batteries) with automatic or user defined configurations
  • PV system electrical diagrams (switchboards, cables, circuit breakers) generated automatically
  • Professional Business Plan of the PV system
  • Component libraries supporting all design stages (modules, inverters, etc.)
  • Technical and financial reports, drawings, cost estimates and project documents are composed automatically from the project data input
A simple Solarius-PV illustration

The all-in-one professional Solar PV calculator software developed with a single purpose, enhance your design skills without leaving anything to chance.

Why choose Solarius-PV as your Solar PV calculator software?

Solar PV Calculator - Design Wizard

Sizing of the PV system with a step by step guided procedure

Solarius PV guides the user in designing the PV system with great ease to achieve the best economic and technical solution.

The working method is based on an easy to use graphical design interface allowing you to speed up the PV design process!

Easily define the available PV system surfaces using specific graphical objects, which already include all the necessary data for the PV system design, or even import your own directly from DXF/DWG CAD files.
Position the solar panels, either they be mounted on roof tops or placed on the ground, from among those selected and proposed automatically by the software to get the best possible results.
Simulate the effects of shading caused by landscaping elements that may be present at long distances from the photovoltaic by conducting a simple photographic survey of the installation site, an analysis of solar shading caused by near obstacles or by adjacent parallel strings of photovoltaic modules.
Configure the photovoltaic system with Low-voltage single-phase inverters (LV), three-phase inverter in low (BT) and medium voltage (MT), multi MPPT inverters, inverter with integrated or independent storage (external solar batteries). Photovoltaic batteries and inverters are selected and automatically proposed by the software to get the best possible level of productivity.
Calculate the PV system’s overall performance (total annual production with an hourly production rate schedule) and assess the profitability and amortization period of the entire photovoltaic system. You’ll be able to consult the calculation results in numerical and graphical form being sure that all calculated data is dynamically updated when making optimizations and changed to the project.
You’re always supported by enhanced design tools such as the operational diagnostics with alert that quickly highlights any errors or inconsistencies so that the whole project is sized and prepared correctly.
The photographic simulation feature allows you to generate precise photomontages of the designed PV system to show the customer what the system will look like once installed and to assess its visual impact within the existing scenario.

Solar irradiance for all locations from PVGIS Climate Data

The productivity assessment of a PV system can be carried out using precise Solar Irradiance data available for the installation area.
For all locations (Europe, Africa, the Mediterranean Basin and South-West Asia) you can import PVGIS (Photovoltaic Geographical Information System) climate data published on the European Community’s website (
Create your own database of locations with their Total solar irradiance (TSI) data collected from other solar maps or direct on-site measurements.


Calculation of the effects of photovoltaic system shading from images or photographs

Solar shading (or clinometrical) is mainly caused by the presence of obstacles relatively far from the PV system itself such as hills, mountains, houses and buildings. Of course, these effects can’t be avoided or mitigated, because it depends on the installation site, therefore, these effects must be accounted for and calculated to be able to determine the PV system’s actual energy productivity rate.
With Solarius-PV, you’ll be able to calculate PV shading in an easy and quick manner from within a simple panoramic landscape photograph.
Solarius-PV also also allows you to check the effects of shading projected onto the PV modules by nearby obstacles such as antennas and chimneys.
You’ll be able to graphically view shadow interferences during a period based analysis (annual, monthly, daily or hourly) and specific features makes managing optimum positioning of the solar panels very easy and efficient.

Solar PV system layout (panels, inverters, batteries) with automatic or freehand modeling supported by an operational diagnostics tool

With Solarius-PV you automatically get the photovoltaic system layout (panels, inverters, batteries, etc.) for any type of photovoltaic system installed with automatic modeling.
Solarius-PV supports photovoltaic systems design for:

  • single-phase low voltage inverter systems even with a Multi-MPPT configuration with different surfaces and exposures composed of panels of different makes and models.
  • energy storage systems using inverters with both integrated and independent external storage facilities with solar batteries.
  • fixed or mobile photovoltaic panels with one or more rotation axes (“Sunflower” solar trackers) and PV inverters at low or medium voltage three-phase even with unbalanced phases.

The assisted design Wizard allows you to obtain the correct dimensioning of the photovoltaic system in a simple and effective way in just a few clicks:

  • identification and selection of available Photovoltaic panel installation spaces,
  • tilt and exposure optimization of photovoltaic panels on the detected surfaces,
  • PV panel model choice and optimization of the number of modules,
  • definition of the number of inverters and their model,
  • optimal configuration (series and parallel strings) of the photovoltaic panels connected to the inverter,
  • optimal positioning of the panels on the various available surfaces according to the effects of near and distant shading.

You have full freedom to continue making adjustments to the designed PV system with the certainty of being assisted by an operational diagnostic process with user alerts that can quickly pin-point any design errors, making sure that all project documents are consistent and prepared in detail.
The PV system diagrams can easily be exported in the DXF/DWG CAD file formats.

Solarius-PV Schematic diagrams for Solar PV system design

PV system electrical diagrams (switchboards, cables, circuit breakers)

With Solarius-PV the PV system wiring diagram is generated in relation to the final configuration of designed photovoltaic system.
You can always change it by adding electrical components (in both AC and DC) or customizing inverters and strings. In the definition of the circuit diagram, you can choose a specific item and define the components for each panel. Beyond providing electrical panels, the single line diagram presents additional information such as voltages, currents, power and cable designations.
Dedicated dialogs allow the designer to size cables and evaluate voltage drops in (DC) Direct Current and (AC) Alternating Current considering all types of cable installation methods.
The photovoltaic system wiring diagram can always be exported in the DXF/DWG CAD file formats.

Professional Economic Analysis (Photovoltaic system Business Plan)

Solarius-PV is also a complete and reliable photovoltaic economic simulator for professional economic analysis (business plan) approached in an easy and immediate manner. Evaluate the designed photovoltaic system’s profitability and payback time obtaining all the relevant data directly from the PV system design.
The Solarius-PV system profitability analysis considers:

  • the system’s total annual energy production
  • electricity consumption rate
  • system cost financing, leasing, etc

Any changes made to the photovoltaic system causes the economic analysis to update automatically according to the new system data allowing the designer to assess differnt solutioons in relation to their productivity and costs. Further comparison tools even highlight the main system differences between projects to quickly pinpoint the most convenient design solution.
All calculation results are provided in both numerical and graphical form and easily export to XLS, RTF, DOC, PDF, JPG file formats.

Solarius-PV - solar PV components archive

Solar PV component libraries in support of all design phases (modules, inverters, etc.)

Solarius-PV is equipped with rich libraries for choosing among a wide range of manufaturers and models.

  • A locations archive with solar irradiation values imported from PVGIS
  • A comprehensive archive containing document templates, inverter, batteries, panels and other popular PV system components.

These are easy to consult and can be enriched by the user with custom items or by editing existing ones.

Technical and Financial reports, drawings and documents generated automatically from the project data.

Solarius-PV allows you to automatically prepare:

  • a detailed solar PV Technical Report with complete references to design choices and the electrical compatibility verification between modules and inverters,
  • the Financial Report (Photovoltaic Business Plan) for system profitability analysis (Payback Time, NPV, IRR, Cash Flow, etc.),
  • the PV system wiring diagrams, showing the surface layout, modules positioning, inverters, electrical switchpanels, cables, etc.
  • the single line electrical diagram of the photovoltaic system including device detailing, cables, circuit breakers, etc.
  • the cost estimate of the designed Solar PV system thanks to the full integration with PriMus cost estimating software.

The technical and financial reports, the system equipment specification sheets and necessary forms are all built into the software and fully editable and customizable directly with the software and can be easily exported to the RTF file format.
The photovoltaic system diagrams can be printed and and exported to the DXF or DWG CAD file formats allowing further detailing and editing with other specific software.

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