The reason for this feature request is because Solar Billing Tariff(NEM3) Export Pricing for some IOUs is based on the median of all the hours with exported power no matter how little. So when our EG4 18KPV constantly exports 100-200W, our export rate isn't for the hour we Forced Discharge which had a rate of $1.00/kWh, it's the mean of all ours of the month which often ends up being $0.05 / kWh. Without a way to have Zero-Export for all periods but during Forced Discharge periods our Export Pricing rate drops considerably because, as mentioned, of all the included hours with super low export rate values. Some of those hours the Export Rate Pricing is $0.001( .1 cents per kWh )!
Off-Grid Mode does provide Zero-Export but cycling from off-grid to on-grid multiple times per daily will increase wear on the relay and I worry that will lead to a wear and failure issue over the years.
See in this image how there are many hours of very little export and all 24 hours have export even though we only wanted to export for the few hours with higher export rates..