PV String Sizing Configurator

PV String Sizing Configurator: The Professional Tool for Fast & Accurate Solar Design

Stop wasting hours manually checking datasheets and worrying about design errors. The PV String Sizing Configurator is a powerful, Excel-based tool that automates the complex process of matching PV modules to inverters, allowing you to create safe, efficient, and reliable system designs in minutes.

Built for solar professionals, engineers, and enthusiasts, this tool transforms a tedious task into a fast and intuitive workflow.

Who Is This For?

• Solar Installers & Sales Professionals: Quickly validate system designs in front of customers and provide accurate proposals on the spot.
• PV System Engineers: Perform rapid preliminary designs and feasibility studies without the overhead of complex software.
• Students & Educators: An invaluable educational tool for learning and teaching the core principles of PV system engineering.
• Solar Enthusiasts & DIYers: Confidently design your own grid-tied system with a robust safety and performance check.

Key Features

• ✔️ Instant Compatibility Check: Immediately determine if a specific PV module and inverter are a valid match.
• ✔️ Temperature-Corrected Sizing: Automatically calculates the precise minimum and maximum number of modules per string based on your local high and low temperatures.
• ✔️ Comprehensive Safety Checks: Get real-time "OK" or "ERROR" feedback on all critical design parameters, including inverter voltage limits, module insulation rating, current limits, and DC/AC ratio.
• ✔️ Dynamic I-V Curve Visualization: An interactive chart provides a clear visual representation of the array's performance against the inverter's operating window, so you can see why a design is valid.
• ✔️ Built-in, Searchable Component Database: Powered by the industry-standard NREL/CEC public database with over 20,000 PV modules.
• ✔️ Fully Customizable: Easily add your own custom modules or inverters to the database for maximum flexibility.
• ✔️ Professional & Macro-Free: A clean, intuitive, and secure tool built entirely within Excel without any risky macros.

What You'll Get

• The fully protected PV String Sizing Configurator .xlsx file.
• A Quick Start Guide with clear instructions for configurations and Custom database update.
• Custom_Modules and Custom_Inverters database with example components to get you started.

All ready in single excel file for instant download.

System Requirements

• Microsoft Excel for Windows (2016 or newer) or Microsoft Excel for Mac (2016 or newer).
• This tool is not compatible with Google Sheets or other spreadsheet software.

Disclaimer

This tool is provided "AS IS" for preliminary design and educational purposes only and without any warranty. The calculations are based on public data, which may contain errors. The user assumes all responsibility for the use of this tool. All final system designs must be verified against official manufacturer datasheets and all local electrical codes by a qualified professional before purchase or installation.