Design Worksheet

Module & Inverter Compatibility Worksheet

Compare entered string voltage and current against documented inverter input limits at the design conditions you supply.

Sources listedReviewed July 2026Our methodology

Inputs

View result

Modules in series

Module Voc at entered design condition

Module Vmp at entered design condition

String operating current

Inverter maximum input voltage

MPPT minimum

MPPT maximum

Maximum input current

Live result

Edit inputs

String Voc

500V

String Vmp

420V

Voltage limits

Within

Current limit

Within

Use temperature-corrected design-condition values from the module calculation and confirm every input against the exact equipment documentation.

Key takeaways

Compare entered string voltage and current against documented inverter input limits at the design conditions you supply.
What you get: String voltage · voltage headroom · current check.
Runs in your browser with no sign-up. Saving a result is optional. An estimate for guidance, not a certificate.

How it works

String voltage is the entered per-module design-condition voltage multiplied by modules in series. The worksheet compares those results and the entered current with the exact inverter limits you supply; it does not calculate site temperatures.

Estimates only: for guidance, not a quote or a compliance certificate. Verify against the current AS/NZS standards and a licensed design. The maths runs in your browser. Nothing is sent to Wattbench unless you sign in and deliberately save the result.

Source ledger5 sources

Standards bodyIEC 61215-1:2021 — IEC Webstore
Standards bodyIEC 61215-2:2021 — IEC Webstore
Standards bodyIEC 62109-1:2010 — IEC Webstore
Standards bodyIEC 62109-2:2011 — IEC Webstore
Standards bodyAS/NZS 5033:2021 — Standards Australia catalogue

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