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There is a misconception that putting more panels on an MPPT controller than the controller is able to use will damage the controller. However, in almost all cases it is possible and often desirable to put more panel wattage onto an MPPT controller than the controller is rated to use. This is called over-paneling
This paper is a high-level discussion of what over-paneling is, why it is useful and how it works.
A shout out to the following forum members for review and comment of early drafts:
@fafrd
@Randij
@wattmatters
@Will Prowse
As usual, if you have suggestions or corrections, please let me know so I can improve the resource.
Revisions:
9/30/2021 - Original Version.
10/18/21 - Added details for Victron and EPever controllers.
10/19/21 - Added specifics for Midnite Solar Classic controllers.
10/20/21 - Added specifics for Sol-Arc, Schnider Electric Conext, and Growatt controllers.
10/20/21 - Add a page with a discussion of controllers that limit the Array Isc.
There is a misconception that putting more panels on an MPPT controller than the controller is able to use will damage the controller. However, in almost all cases it is possible and often desirable to put more panel wattage onto an MPPT controller than the controller is rated to use. This is called over-paneling
This paper is a high-level discussion of what over-paneling is, why it is useful and how it works.
A shout out to the following forum members for review and comment of early drafts:
@fafrd
@Randij
@wattmatters
@Will Prowse
As usual, if you have suggestions or corrections, please let me know so I can improve the resource.
Revisions:
9/30/2021 - Original Version.
10/18/21 - Added details for Victron and EPever controllers.
10/19/21 - Added specifics for Midnite Solar Classic controllers.
10/20/21 - Added specifics for Sol-Arc, Schnider Electric Conext, and Growatt controllers.
10/20/21 - Add a page with a discussion of controllers that limit the Array Isc.
