Photovoltaic Calculations3.3.0

THE FUTURE IS SOLAR ENERGY. MAXIMIZE YOUR PLANT'S YIELD.

Photovoltaic Calculations is the ultimate app for industry professionals, installers, and renewable energy enthusiasts. Design, size, and analyze every aspect of your solar plant with precision and speed. Get the most out of your solar panels by optimizing every single component simply and instantly!

MAIN CALCULATIONS AND SIZING:
- Photovoltaic panel yield
- Air mass index and fill factor
- Sun position and optimal tilt angle
- Irradiance on a tilted surface
- Solar cell temperature and temperature effect on the module
- Integrated tools: compass, inclination, altitude
- Solar cable ampacity and cross-section calculation (DC)
- Protective device sizing and SPD (Surge Protection Device) requirements
- String sizing and short-circuit currents
- Ideal inverter selection
- Photovoltaic panel decay over the years
- Occupied surface area and spacing between module rows
- Estimation of daylight hours during the year

THEORETICAL AND PRACTICAL RESOURCES:
- Series and parallel panel connections
- Basic concepts: module, string, and photovoltaic array
- Astronomical parameters: solar zenith, solar azimuth, solar declination

Everything you need is packed into an intuitive interface, which also includes a VERY USEFUL FORMULARY always at your fingertips.
Do not leave efficiency to chance, start designing your perfect solar plant today!

Version History * New: Module layout
* New: Annual energy production
* New: Annual solar irradiation
* New: Ground-reflected irradiance (albedo)
* New: Table of albedo values
* Mod: "Card" interface in all calculations
* Mod: Coordinates (if entered) are passed to the map
* Mod: Improved geolocation speed
* Mod: Use Wp and kWp units for module power
* Fix: "Portrait" and "Landscape" were displayed only in Italian
* Fix: In the calculation of the protection device only the results of the set cables are shown 3.3.0 Sep 7 * Add: The calculation of the occupied surface area now also takes into account the spacing between modules
* Add: The calculation of the degradation of the panels now also takes into consideration the initial degradation (LID)
* Add: Width and length of the module in the efficiency calculation
* Add: Ability to include azimuth in the optimal tilt calculation
* Add: The azimuth can be expressed with a range of -180°/+180° or with a range of 0°/360°
* Fix: Southern Hemisphere and more bug fix in calculating module row spacing
* Mod: Improved chatbot support and moved to a more visible position
* Mod: Improved license management
* Fix: 90° tilt accepted
* Fix: Focus does not select cell 3.2.2 Aug 26 * Mod: Improved cache
* Mod: Improved some layouts
* Fix: Dropdown with RTL languages
* Fix: Crash when printing "Temperature effect on photovoltaic module"
* Fix: Map crash when entering pole coordinates
* Fix: Main view width with RTL languages
* Fix: Crash when selecting a calculation with an index that is no longer valid 3.2.1 Jul 7 * Mod: Native ads instead of interstitials
* Upd: In-depth language review 3.2.0 May 5 * Mod: Set the resistivity of copper to 0.01851 Ω*mm²/m and of aluminum to 0.02941 Ω*mm²/m
* Add: Guide on safe operating currents for circuit breakers and fuses
* Add: Support for IEC circuit breakers up to 6300A
* Fix: Automatic selection of temperature behind panels when sizing NEC protection device
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: General update of the languages 3.1.2 Mar 16 * Upd: Updated some external libraries
* Imp: The standard is automatically selected (when possible)
* Upd: Chatbot model updated to Gemini 2.5
* Upd: General update of the languages 3.1.1 Jan 13 * New: Current carrying capacity of solar cable
* New: Need for SPD
* New: The app now supports CEI standards in addition to the international IEC ones
* Add: DC/AC ratio parameter for inverter selection
* Add: Voltage drop also expressed in volts in the calculation results
* Mod: In IEC/CEI calculations, the cable with 90°C insulation is automatically selected
* Fix: gPV fuse tripping current
* Fix: Fixed some input parameter labels
* Upd: General update of the languages 3.1.0 10/21/2025 * Add: Full compatibility with iOS 26
* Fix: Crash when switching from Altitude to Compass
* Fix: Minor compass bug fixes
* Fix: Ads volume 3.0.0 09/22/2025 * Upd: General update of the languages 2.1.15 08/20/2025 * Fix: Settings row height
* Mod: Minor graphic improvements 2.1.14 07/15/2025 * Upd: The guide is now also translated into other languages 2.1.13 06/12/2025 * Upd: Updated some external libraries 2.1.12 05/28/2025 * Upd: Portuguese [Brazil] language (by Isaias Alves) 2.1.11 05/07/2025 * Upd: Arabic language (by WinAli) 2.1.10 04/10/2025 * Fix: Error in voltage drop formula 2.1.9 03/26/2025 * Mod: Improved license captions
* Mod: Migration to Gemini 2.0 for chatbot
* Mod: The terms of service are more prominent
* Fix: Fixed keyboard distance from safe area 2.1.8 03/12/2025 * Upd: Portuguese [Brazil] language (by Alfredo) 2.1.7 02/25/2025 * Fix: Minor bug fix 2.1.6 02/10/2025 * Add: Support for floating keyboard
* Fix: Minor bug fix 2.1.5 02/04/2025 * Mod: Improved purchase management
* Upd: Updated some external libraries
* Add: Mongolian language (by Lkhagva)
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: General update of the languages 2.1.4 01/07/2025 * Upd: AdMob SDK 2.1.3 11/13/2024 * Mod: Dark and Tint app icon
* Mod: Improved some bar button icons
* Add: Khmer and Thai language
* Upd: Czech language (by Skipy)
* Upd: General update of the languages 2.1.2 10/14/2024 * Upd: Macedonian language (by Dragančo Velkov)
* Upd: Arabic language (by Majed Al-Shagdari)
* Upd: Czech language (by Skipy)
* Upd: General update of the languages 2.1.1 10/01/2024 * New: Module inter-row spacing
* New: Altitude
* Add: Possibility to interface with a virtual assistant before contacting us
* Upd: Macedonian language (by Dragančo Velkov)
* Upd: Arabic language (by Majed Al-Shagdari) 2.1.0 09/16/2024 * Fix: Minor bug fix
* Upd: Portuguese [BR] language (by Ferdinand)
* Upd: Updated some external libraries 2.0.3 08/26/2024