# Node-RED virtual PV installation **URL:** \ **Category:** Node-RED\ **Tags:** node-red, dess, diy, cerbo-gx\ **Created:** [25 August 2026 11:47 UTC](https://community.victronenergy.com/t/nodered-virtuele-pv-instalatie/62101 "2026-08-25T11:47:19Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![jules.bosma](https://avatars.discourse-cdn.com/v4/letter/j/ecb155/32.png) [@jules.bosma](https://community.victronenergy.com/u/jules.bosma)\ **Post date:** [25 August 2026 11:47 UTC](https://community.victronenergy.com/t/nodered-virtuele-pv-instalatie/62101/1 "2026-08-25T11:47:19Z")
In an installation, the solar panels on the roof are fitted with Tsun microinverters, which cannot communicate directly with Victron. I created an integration in Node-RED in which the solar panels are linked to a virtual PV inverter. The energy yields are visible on the Cerbo, but are not included in DESS. Previously, I used a VM-3P75CT to measure the yield from the PV installation, and this is detected and included in DESS. However, now that there is both a virtual PV installation and this meter, the yields are being added together. When I disable the VM-3P75CT under Devices, the entire yield is no longer included in DESS. Cerbo software V3.75 Large. Could this be a bug? ---
**Author:** ![nickdb](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/nickdb/32/51440_2.png) [@nickdb](https://community.victronenergy.com/u/nickdb)\ **Post date:** [25 August 2026 12:26 UTC](https://community.victronenergy.com/t/nodered-virtuele-pv-instalatie/62101/2 "2026-08-25T12:26:59Z")
The system won’t know this is a duplicate, so configuring multiple meters will cause an accounting error. Just enable one for the PV role. ---
**Author:** ![jules.bosma](https://avatars.discourse-cdn.com/v4/letter/j/ecb155/32.png) [@jules.bosma](https://community.victronenergy.com/u/jules.bosma)\ **Post date:** [25 August 2026 13:29 UTC](https://community.victronenergy.com/t/nodered-virtuele-pv-instalatie/62101/3 "2026-08-25T13:29:46Z")
That was also the intention, but the virtual OV meter from Node-RED isn’t detected by DESS and included in the energy planning. ---
**Author:** ![nickdb](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/nickdb/32/51440_2.png) [@nickdb](https://community.victronenergy.com/u/nickdb)\ **Post date:** [25 August 2026 13:34 UTC](https://community.victronenergy.com/t/nodered-virtuele-pv-instalatie/62101/4 "2026-08-25T13:34:02Z")
Not yet. This is all new functionality it takes time to come together between the venus OS, nodered and VRM. This is unfortunately part of the joy of customising a system and using new capabilities. It requires some patience.