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PostPosted: Wed Feb 27, 2019 8:12 am 

Joined: Tue Feb 26, 2019 9:55 am
Posts: 4
Hello, I am trying simulate a situation where the "self-consumption" should be 100% and "sold energy to grid" should be near 0%. I have created a CSV-file of the daily user's needs and used that in the "self-consumption" of the Main parameters.

So why is the "self-consumption" in Economic evaluation 0 kWh/year and the "Sold energy to grid" basically all produced energy, and how do I change it? It messes up the Financial results, because PVSyst thinks I want to sell all the produced energy.

Thanks


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PostPosted: Fri Mar 01, 2019 12:14 am 
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Joined: Mon Apr 16, 2012 7:29 pm
Posts: 1680
Before analyzing the economic evaluation, please analyze first the energy output of your simulation.

I don't understand well what you have specified on your CSV file: with CSV reading, PVsyst only accepts hourly consumption values, not daily values.
If you want to create a PV system ensuring 100% self-consumption, it should be of sufficiently low power for never exceeding the User's needs, even by clear sky conditions.


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PostPosted: Mon Mar 04, 2019 8:34 am 

Joined: Tue Feb 26, 2019 9:55 am
Posts: 4
Quote:
Before analyzing the economic evaluation, please analyze first the energy output of your simulation.

I don't understand well what you have specified on your CSV file: with CSV reading, PVsyst only accepts hourly consumption values, not daily values.
If you want to create a PV system ensuring 100% self-consumption, it should be of sufficiently low power for never exceeding the User's needs, even by clear sky conditions.
Thanks, Andre.

I realized that the self-consumption has to be in hourly consumption values, like you said. I had the self-consumption in daily consumption values and that's why in the economic evaluation all the generated power was on the "sold energy to grid" row.


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PostPosted: Wed Mar 06, 2019 10:44 am 

Joined: Wed Mar 06, 2019 10:33 am
Posts: 1
Quote:
Quote:
Before analyzing the economic evaluation, please analyze first the energy output of your simulation.

I don't understand well what you have specified on your CSV file: with CSV reading, PVsyst only accepts hourly consumption values, not daily values.
If you want to create a PV system ensuring 100% self-consumption, it should be of sufficiently low power for never exceeding the User's needs, even by clear sky conditions.
Thanks, Andre.

I realized that the self-consumption has to be in hourly consumption values, like you said. I had the self-consumption in daily consumption values and that's why in the economic evaluation all the generated power was on the "sold energy to grid" row.
Thanks for the info, where can I find a file to make my owns calculations?

Best


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