Help Center Design Tool

Auto Stringing in Solargraf

Published on 10 Jul 2026

Solargraf's new "Auto Stringing" feature streamlines the process of automatically connecting individual solar panels into strings, a critical step in solar array design that directly affects system performance.

This feature is primarily designed for systems using string inverters, which require panels to be connected in series to form strings. Because microinverter systems assign an individual inverter to each panel, eliminating the need for complex stringing calculations, the direct impact of auto-stringing is less pronounced.


Using Auto-stringing: A step by step guide

String inverter

Within Solar design tab, after panel placement,

  • Click on Add inverter button.

  • Select the string inverter and (optionally) optimizer or rapid shutdown/MCI you want to use.

  • Once you've made your selections, click "Complete stringing” button.

  • Solargraf automatically creates optimal strings within seconds, maximizing energy output and minimizing project costs by optimizing string number and length within structural and electrical limits. It also determines the number and placement of inverters.

  • You can manually adjust the generated strings or inverter positions if needed.

  • Solargraf will immediately notify you of any stringing validation issues, allowing you to correct them and rerun the auto-stringing tool.

Click on Add inverter
Select inverter and optimiser/MCI (optionally)
Auto stringing output - Optimal strings
Stringing validation error

Microinverter

Within Solar design tab or electrical design tab, after panels and microinverters placement,

  • Click the stringing icon (or use the shortcut "B").

  • Click String for me button.

  • Solargraf automatically connects microinverters into optimal parallel branches within seconds, optimizing the number and length of branches within structural and electrical limits.

  • You can manually adjust the generated branches or microinverter placement if needed. This branching is the first step in generating Single Line Diagrams (SLDs).

Choose stringing option
Select “String for me”
Auto stringing output - Optimal parallel branches

While auto-stringing's primary benefit is streamlining series connections for string inverters, it also simplifies parallel connections in microinverter systems, essential for SLD generation within Solargraf's Electrical Design tab.

Ground Mount

Project used in staging to create ground mount design Solargraf

Within Solar design tab or electrical design tab, after panels and inverters placement,

  • Click the stringing icon (or use the shortcut "B").

  • Click String for me button.

  • Toggle ON “Jump between frames” if you want panels to be connected across frames in the same string.

  • Solargraf automatically creates optimal strings within seconds, maximizing energy output and minimizing project costs by optimizing string number and length within structural and electrical limits.

Choose stringing option
Select “String for me”
Option to select “Jump between frames”
Auto stringing output - Optimal parallel branches

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