SolarCalc Pro is an advanced tool for performing electrical calculations and determining the optimal size of solar photovoltaic (PV) systems, as well as calculating the necessary space on rooftops. It offers a wide range of features, including PV array shadow calculations, SPV off-grid load calculations, SPV off-grid system sizing calculations, PV water pumping calculations, solar voltage drop calculations, solar rooftop calculations, monthly solar irradiance data, and monthly tilt angle data. These features make it an invaluable tool for both experienced professionals and beginners in the design and planning of solar energy systems. In addition to solar calculations, SolarCalc Pro also provides precise electrical calculations for a variety of other areas, such as Ohm’s law, voltage drop, cable cross-section, conductor resistance, DC/AC power, power factor, motor horsepower, busbar current, inverter calculations, transformer calculations, transformer fault level, and earthing conductor cross-section calculations. This makes it a comprehensive tool for planning and constructing electrical systems accurately. The app also includes a library of resources on solar PV cells, solar PV modules, AWG and SWG tables, resistivity and conductivity tables, worldwide electricity tables, cable short circuit rating, power cable coding, voltage rating classification, types of AC circuit breakers, transmission conductors, an IP rating guide, and ANSI device numbers. These references are essential for users during the design and planning process. SolarCalc Pro goes beyond just calculations and offers additional features such as checking the weather, examining a compass, and providing information on the sun, wind, air quality index (AQI), and current latitude and longitude. It is also compatible with over 80 different languages, making it accessible to users worldwide. To cater to user preferences, the app allows for manual or automatic adjustment of the night and light themes based on local sunrise and sunset times. This feature helps meet the needs of both users and the environment. Overall, SolarCalc Pro is a powerful tool for anyone involved in solar energy systems, providing accurate calculations and resources to simplify the design and planning process.’