Grid-connected PV plant with battery storage and no self consumption

[Vasil Janevski]

I have a grid-connected PV plant, and I want to integrate a battery storage system. There is no self-consumption involved. The battery should charge using the PV plant's production during the day, and the stored energy should be discharged to the grid during the night when there is no production. Is there an option in PVsyst to configure this setup?

[Linda Thoren]

Dear Vasil Janevski,

Yes indeed, in PVsyst we have 3 storage strategies and the "Peak shaving" correspond well to what you are describing.

Following youtube tutorial further explain this feature in PVsyst:

Kind regards

[Vasil Janevski]

Thank you.

[sagar b]

Hi Linda,

What if I don't want to sell in the day time? 

Peak shaving strategy only store the energy that can not be injected into the grid due to grid limitation.

[Linda Thoren]

Hello,

Indeed the peak shaving is not design for this exact purpose. With the peak shaving strategy you will only store the energy above the set grid limitation. Setting a lower grid limitation will allow to charge the batteries and then you can set the specific hours for when you want to discharge the batteries. Indeed the discharge of the batteries will also be limited to the set grid limitation threshold. 

[sagar b]

On 2/18/2025 at 6:22 PM, Linda Thoren said:

Hello,

Indeed the peak shaving is not design for this exact purpose. With the peak shaving strategy you will only store the energy above the set grid limitation. Setting a lower grid limitation will allow to charge the batteries and then you can set the specific hours for when you want to discharge the batteries. Indeed the discharge of the batteries will also be limited to the set grid limitation threshold. 

Hi Linda,

In my case, I've same output capacity of solar inverter and grid limitation. But, I am going to integrate the battery in this system.

How can i reflect this in simulation? For this case, Peak shaving strategy can not charge the battery. Can't see any changes in loss diagram.

Do you have any suggestion for this?

[Linda Thoren]

One way to evaluate such a system could be to choose the increased self consumption storage strategy and create a self consumption profile that corresponds to the energy you intend to inject to the grid. With the self consumption strategy, the batteries will never discharge to the grid, only to fulfill the users needs. Though, if you create a consumption profile with large consumption during the night you could possibly considered the energy that is "self consumed" to be what you inject to the grid. 

Let me know if this work around seems to be valid in your context.

Kind regards

[sagar b]

21 hours ago, Linda Thoren said:

One way to evaluate such a system could be to choose the increased self consumption storage strategy and create a self consumption profile that corresponds to the energy you intend to inject to the grid. With the self consumption strategy, the batteries will never discharge to the grid, only to fulfill the users needs. Though, if you create a consumption profile with large consumption during the night you could possibly considered the energy that is "self consumed" to be what you inject to the grid. 

Let me know if this work around seems to be valid in your context.

Kind regards

Hi,

Yes, we can see the stored energy in battery but in self consumption, the priority is given to the user.

But, we need to reconsider the size of battery by ourselves.