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Free solar panel & inverter compatibility checker. Verify your PV string configuration is safe before installation.

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  • Calculator
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  • Inverter Compare
  • Panel Replacement
  • Cable sizing

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Panel Replacement Finder

Find compatible replacement panels for your existing solar panels. Matches by electrical specs to ensure string compatibility.

When a solar panel in your string fails or is discontinued, finding a compatible replacement is critical. The replacement must match the original panel's electrical characteristics — voltage, current, and temperature coefficients — to maintain string safety and performance.

Select the panel you want to replace

Panel not in the catalogue?

Choose a panel to see what can replace it

Every panel in the catalogue is compared by voltage, current and temperature behaviour.

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

Find all compatible panels for a specific inverter

Already have panels?

Find an inverter that fits your panel array with the right MPPT range and DC/AC ratio.

How the Algorithm Works

Learn how panels are scored and matched

Related guides

How to Replace Discontinued Solar Panels in an Existing String

How to Replace Discontinued Solar Panels in an Existing String

12 min

PERC vs TOPCon vs HJT: Which Panel Wins in 2026?

PERC vs TOPCon vs HJT: Which Panel Wins in 2026?

12 min

Best Solar Panel Brands 2026: Aiko, LONGi & 7 More

Best Solar Panel Brands 2026: Aiko, LONGi & 7 More

17 min