Find replacement for Trina Solar TSM-NEG18R.20-520

520 W panel, 108 cells

Original Panel905

Select the panel you want to replace

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

Find all compatible panels for a specific inverter

Panel Replacement Guide

Learn how to safely replace panels in an existing string

Original Panel Specs

Voc

41.2 V

Vmpp

34.1 V

Isc

15.99 A

Impp

15.25 A

TcVoc

-0.24 %/°C

TcPmax

-0.29 %/°C

Pmax

520 W

Cells

108

The Trina Solar TSM-NEG18R.20-520 is a 520 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.

Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.