Avoiding grid certain hours?

[ridax67]

I think this project looks very good and believe this is what I will use, at least april-october. November to march I want avoid using any electricity working days 7-20. How would I make Bess understand to avoid using the grid these hours. Of course I could turn off bess and use tou these months but it would be nicer if it were possible to use bess for this as well.

Any ideas?

[johanzander]

Not sure I understand, BESSs only lever is controlling battery charge and discharge, not electricity or grid usage.
Can you explain the use case

[ridax67]

My electricity net provider has an optional power fee. If you opt in, you pay 135 SEK per kWh for the average of the 3 hours with highest usage workdays between 9-20 november to march. Complicated, but the main point is I want ro avoid using any grid workdays between 9-20. Last winter I managed this with tou and ran completely off batteries during these times and charged the cheapest hours during night. This way I avoided this fee and ran on cheap electricity even during the morning and evening peaks. Others with the same kind of contracts but can't avoid them completely because the daily consumtion is higher than their battery capacity use peak shaving there they cut off all consumtion above a set level.

To implement this one would need to have a setting when this would apply (months, days, hours) and the target cut off level.

You then would have to fill the battery by the start time and start the peak shaving. You can google peak shaving and I think you will find a lot of info.