# MPPT sizing calculator oversizing

**URL:** <https://community.victronenergy.com/t/mppt-sizing-calculator-oversizing/6954>\
**Category:** Q&A and troubleshooting\
**Tags:** mppt, mppt\_calculator\
**Created:** [9 October 2024 10:11 UTC](https://community.victronenergy.com/t/mppt-sizing-calculator-oversizing/6954 "2024-10-09T10:11:35Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![selwyn](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/selwyn/32/24068_2.png) [@selwyn](https://community.victronenergy.com/u/selwyn)\
**Post date:** [9 October 2024 10:11 UTC](https://community.victronenergy.com/t/mppt-sizing-calculator-oversizing/6954/1 "2024-10-09T10:11:35Z")

</div>

The new web based MPPT sizing calculator has a fixed oversizing level of 130%, and only shows one product. It does not allow one to select a larger MPPT.

Please add an option to select the oversizing level. This will allow one to select a larger MPPT for sunny installations.

---

<div class="post-metadata">

**Author:** ![pwfarnell](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/pwfarnell/32/2341_2.png) [@pwfarnell](https://community.victronenergy.com/u/pwfarnell)\
**Post date:** [9 October 2024 15:54 UTC](https://community.victronenergy.com/t/mppt-sizing-calculator-oversizing/6954/3 "2024-10-09T15:54:39Z")

</div>

There is a comment at the end of another thread noting that oversizing will be improved and 130% is a quick fix at the moment.

See last post in  
[https://community.victronenergy.com/t/new-mppt-calculator-cannot-do-custom-parameters/1201/15](https://community.victronenergy.com/t/new-mppt-calculator-cannot-do-custom-parameters/1201/15)