question

kennybuntinx avatar image
kennybuntinx asked

What values to take from solar panel datasheet when using Victron Mppt calculator

If using the MPPT Calculator from Victron . Should we use the values from STC or NMOT at the datasheet of a solar panel .

For example :

NMOT values :

1673351513706.png

STC values

1673351530880.png


Completely different values ....

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1 Answer
gazza avatar image
gazza answered ·

Since the MPPT calculator is designed to provide a guide that is "safe" regarding the max limits of the MPPT charger I would use the STC values.

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klim8skeptic avatar image klim8skeptic ♦ commented ·

@KennyBuntinx NOTC is a derated figure that represents the panels output under Normal Operating Cell Temperatures, as well as 80% normal solar irradiation.

@Gazza is correct, use STC values.

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