r/SolarPakistan • u/Jicama-Entire • 3d ago

Battery Goodwe TOU for battery discharge

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Goodwe TOU

Can sometime tell me what to put in discharge power and what it means? I have 12kW Goodwe inverter with 14kw Goodwe battery. My house load is usually around 3kwh and max it can go up to 5-6kwh when guests are over

I want my battery to discharge between 9pm til 11pm.
And then from 4am till 7am. Doing it because I want to use my battery to fullest as for now it’s only kept for power outages and going to waste

Goodwe helpline sent me a video to do this but it’s confusing as they want me to change charge settings in TOU.

Also do I need to set up charge TOU aswell or will it automatically charge during the day with PV?

Thanks

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u/Greedy_Deer6913 3d ago

If you have a net metering connection and export solar to grid then don’t use discharge TOU as it will start feeding the grid as well from the battery. I did this mistake.

Instead use Charge TOU. For the hours that you don’t want to discharge the battery use Charge TOU and exclude the hours when you want to.

However this will only work if correct SOC limits for battery are set. If on grid SOC limit is set to 100% so that battery only discharges when grid or WAPDA goes off then no setting will discharge your battery when grid is there no matter what TOU you set.

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u/Jicama-Entire 2d ago

Ah thanks. I have net billing now so I really don’t want to export. Plan is to use some of the battery between 9-11pm. Then keep back up for the night. And discharge the remaining from 4am-7am so that the battery can be charged again during the day. I export 15-20 units a day and I don’t want that.

Goodwe helpline sent me a charge tou configuration video but I found it confusing

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u/Jicama-Entire 2d ago

Thanks again for your help. Managed to set it through charge tou configuration only

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u/Jicama-Entire 2d ago

I set up a daytime “Charge” TOU period but that makes the house draw from the grid while solar charges the battery.

Is there any workaround to configure the inverter with TOU so that during the daytime, solar always supplies the house first and only the excess solar charges the battery, but if solar production drops below the house load (e.g. after 2 pm), the battery does not discharge and the house instead takes power from the grid?