# Solar Forecast unrealistic and extreme high

**URL:** <https://community.victronenergy.com/t/solar-forecast-unrealistic-and-extreme-high/16002>\
**Category:** Q&A and troubleshooting\
**Tags:** beginner, vrm, not-listed, ess\
**Created:** [20 December 2024 08:16 UTC](https://community.victronenergy.com/t/solar-forecast-unrealistic-and-extreme-high/16002 "2024-12-20T08:16:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![spacecow](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@spacecow](https://community.victronenergy.com/u/spacecow)\
**Post date:** [20 December 2024 08:16 UTC](https://community.victronenergy.com/t/solar-forecast-unrealistic-and-extreme-high/16002/1 "2024-12-20T08:16:52Z")

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Hello  
Since 13th of december my Solar Forcast skyrocket to absurd values (I have 7kWp and the daily forecast jumpe above 200kWh). An forcast reset does not solve the issue now I got a forecast for today of 1.1MWh see attached picture). Is there any way to get this back working as I utilise the forecast in different controle loops in node-red.  
That during winter with low and fluctuating solar yield the forcast is unprecise is clear and ok, but thats around 3 magnitudes off. Is there a way of add information into the forecast process to get back to realistic values?

 ![image](https://europe1.discourse-cdn.com/victron/original/2X/f/fc90954f0289bcd3beda6634b5892e8da0f5efed.png)

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**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:** [18 January 2025 19:06 UTC](https://community.victronenergy.com/t/solar-forecast-unrealistic-and-extreme-high/16002/2 "2025-01-18T19:06:55Z")

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Are you using an mods or beta virtual nodes?

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**Author:** ![spacecow](https://avatars.discourse-cdn.com/v4/letter/s/a87d85/32.png) [@spacecow](https://community.victronenergy.com/u/spacecow)\
**Post date:** [31 January 2025 12:55 UTC](https://community.victronenergy.com/t/solar-forecast-unrealistic-and-extreme-high/16002/3 "2025-01-31T12:55:51Z")

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I think I found the problem, I use python scripts to import the solar yield from Deye microinverters, and there seam to be sporadicly wrong readings. I fixed the scripts to prevent report of unrealistic readings, reset the forecast and now everything seams to be normal again.

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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:** [14 February 2025 12:56 UTC](https://community.victronenergy.com/t/solar-forecast-unrealistic-and-extreme-high/16002/4 "2025-02-14T12:56:22Z")

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Closed on 14 February 2025 12:56 UTC

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