Why is the Solar Forecast from the VRM so bad? I have 2 sites running with DESS and the Weather was 90-100 Cloudy the last 4-5 Day’s. The Forecast from VRM was always around 50-60kWh. Since the last 2 Days i checked also the AccuWether API - the Forecast is also not perfect… but very close. Location is set at the Victron Site - is there maybe something else to check?
Hi @sega,
Can you please post the VRM URLs for the sites that are showing this deviation so our team can have a closer look?
Our sampling shows error within 20%, so these results are an anomaly to investigate.
thx, i wrote you an email with 3 sites… also one has a bug in the VRM Overview - showing Loss of Mains.
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@guystewart Do you mean that 20% off on an hourly basis is not normal. In that case I have also issues. Furthermore, the forecast usage is not displayed.
