Dear Victron-Team, I warmly appreciate the implementation of solar forecast in VRM. It is a nice feature that allows a better planning of various aspects. Since I was using an own Solcast account before Victron’s implementation, I have the ability to compare. In the past I observed already that Vi…

@Barbara : Last 9 days I recorded VRM and native Solcast forecasts and PV results, where I like to share my findings. My post please shall be not considered as criticism, but as collaboration to support. Forecast versus PV result: [Screenshot 2024-09-29 122353] During 9 days native Solcast for…

Just an example from my installation from today, Victron forecast is completely wrong :frowning: [image] [image] [image]

Similar problems still here on my ESS with PV. I had been using Solcast for over 2 years and it provided ‘good enough’ forecasts for me to model the overnight target SoC so as not to feed back PV to the grid during the following day (I just look at tomorrows forecast for this model). I recently mi…

Please consider, I posted a follow-up about VRM solar forecast reliability in a separate thread, since this thread was temporarily hidden. For more information please see here: https://community.victronenergy.com/t/solar-forecast-reliability-in-vrm/23706

Hi @Barbara , Since anybody from community admin team deleted my previous forecast related to VRM based forecast, I have to submiit a new thread ;-( In that former thread I indicated the low VRM solar forecast stabilty, which makes a dynamic battery usage quite difficult (just to remind, I added a …

very interesting! What is your location? Do you often have fog there? (we have…) Can the Solacast forecast be imported free of charge via Node-RED like the VRM forecast?

[image] grua: Can the Solacast forecast be imported free of charge via Node-RED like the VRM forecast? Hi grua, In order to use the native Solcast forecast, you have to create a “Home PV” account at Solcast and to retrieve results via their API. Of course I do that in nodered. You have just …

[image] Thomas W.: During the period I used in my comparison the weather was not impacted by fog or high fog. In November and December we effectively had. During that time the comparison would have been not fair and meaningful. In one of former threads it was mentioned that VRM forecast actuall…

Hi @Barbara , Since anybody from community admin team deleted my previous forecast related to VRM based forecast, I have to submiit a new thread ;-( In that former thread I indicated the low VRM solar forecast stabilty, which makes a dynamic battery usage quite difficult (just to remind, I added a …

[image] Thomas W.: cover a feature to send private messages. Is it portentially deactivated? @Barbara : Where shall I provide my ID? This forum does not allow private or hidden messages.

VRM PV forecast (improvement appreciated) - Comparison Victron's Solcast vs. native Solcast

Beta testing VRM beta

nickdb (Nick) 1 March 2025 13:43 16

Two overlapping topics merged.

Topic		Replies	Views
VRM Forecast data doubled(?) DIY diy , vrm , not-listed , cerbo_gx	76	1366	22 July 2026
Vorhersagedaten bzw. Prognosedaten von Victron VRM in HA verwenden Deutschsprachiger Bereich vrm	11	1418	7 October 2024
Solarprognose Victron Deutschsprachiger Bereich	22	1049	11 March 2025
DESS: Why is the forecast 2-6 times higher sometimes - how is solar forecast working? DESS dess	98	2806	9 September 2025
Solar forecast data DIY diy , vrm , solar_forecast , modbus_tcp , victron_community	2	225	3 December 2024

VRM PV forecast (improvement appreciated) - Comparison Victron's Solcast vs. native Solcast

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