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dxoverdy / Alpha2MQTT

A smart home interface for AlphaESS solar and battery inverters.
GNU General Public License v3.0
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Disable/shutdown PV inverter when energy prices turn negative #23

Closed RolfDeL closed 5 months ago

RolfDeL commented 5 months ago

Hi Daniel,

I've been looking in to the register set but can not find if you can disable/shutdown the PV production when energy prices turn negative. I have a dynamic energy contact.

Kind regards

ffrog8 commented 5 months ago

I don't think pv can be shut off. You can limit the % fees in to 0, which will stop exporting over what the house is using. Have to make sure that there are no other dispatch commands are active at the same time or the % is ignored.

dxoverdy commented 5 months ago

If you have a hybrid solar/battery system then you can use dispatch mode to set “load following”, similar to how you would use the dispatch commands to enable charge or discharge to grid.

Load following monitors export and attempts to keep it as close to zero as possible. If you know a charged period kicks in at 12:00 for half an hour you could ping the mqtt messages at 12:00 and enable that dispatch mode for (30x60) seconds.

Dan

On Wed, 17 Apr 2024 at 12:25, ffrog8 @.***> wrote:

I don't think pv can be shut off. You can limit the % fees in to 0, which will stop exporting over what the house is using. Have to make sure that there are no other dispatch commands are active at the same time or the % is ignored.

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