# DESS green mode: not charging while there is grid feed-in (PV without energy meter)

**URL:** <https://community.victronenergy.com/t/dess-green-mode-not-charging-while-there-is-grid-feed-in-pv-without-energy-meter/7137>\
**Category:** DESS\
**Tags:** domestic, dess, vrm, diy\
**Created:** [10 October 2024 13:43 UTC](https://community.victronenergy.com/t/dess-green-mode-not-charging-while-there-is-grid-feed-in-pv-without-energy-meter/7137 "2024-10-10T13:43:42Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![nortciv](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/nortciv/32/36552_2.png) [@nortciv](https://community.victronenergy.com/u/nortciv)\
**Post date:** [10 October 2024 13:43 UTC](https://community.victronenergy.com/t/dess-green-mode-not-charging-while-there-is-grid-feed-in-pv-without-energy-meter/7137/1 "2024-10-10T13:43:42Z")

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Hello,

Problem: DESS does not charge when there is grid feed-in from the PV inverters.

I have installed a Multiplus II 5000VA in ESS mode with a pylontech US5000 battery and everything works fine. I wanted to try out the new dynamic ESS features in vrm, but so far I have run into the following problem: The DESS does not charge when there is grid feed-in from the PV inverters. In normal ESS mode the system will adhere to the grid setpoint of 0 Watt, and charge when the grid is negative. In DESS mode the system will discharge fine to supply a load, to keep the grid around 0W.

I have two old SMA inverters with no communications and no energy meter. Would installing a PV energy meter solve the problem? Is a PV energy meter a requirement for DESS to work?

Thanks in advance!

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**Author:** ![nortciv](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/nortciv/32/36552_2.png) [@nortciv](https://community.victronenergy.com/u/nortciv)\
**Post date:** [20 October 2024 19:16 UTC](https://community.victronenergy.com/t/dess-green-mode-not-charging-while-there-is-grid-feed-in-pv-without-energy-meter/7137/2 "2024-10-20T19:16:23Z")

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A PV meter ( or PV communication for that matter) is a requirement. After adding a meter to my system DESS starts working fine! 👍

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**Author:** ![system](https://europe1.discourse-cdn.com/victron/original/1X/21a9a7b5db7c6339715f993568736a7053199995.png) [@system](https://community.victronenergy.com/u/system)\
**Post date:** [3 November 2024 19:16 UTC](https://community.victronenergy.com/t/dess-green-mode-not-charging-while-there-is-grid-feed-in-pv-without-energy-meter/7137/3 "2024-11-03T19:16:59Z")

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