When will there be a discharge button in the VRM dashboard? Today the planned discharge of the battery will start at 5 p.m. today, while (in the case of Tibber) it could already be discharged at 4 p.m., for example. This has to be done sooner because I can only discharge a maximum of 4 kWh (1 phase) with a 20 kWh battery… Now I manually reduce the max charge voltage to 50v in the DVCC at the time I want, and today that is 1600 hours, to “force” the system to discharge at a time I want… and at 1700 hours. I set it back to 57.6v so that the dess “works” as I want again… This way it is more profitable for me to trade.
In addition, an adjustable SOC value should be possible or taken over from the set SOC. because I am of the opinion that the dess works less well with a 1-phase installation because it cannot be discharged “fast enough” to the grid. There is already a keep battery charged button in the VRM dashboard, so I think a discharge button is also possible. and the reason is that I want to be able to decide for myself how much profit (e.g. from 10 cents) I want to sell. and I don’t want to waste my battery cycle for a few cents difference with the purchase price, as is now happening with the formula proposed by Victron… Screenshot_20241112_110031_Tibber|225x500
i am not using dess at the moment anymore. i load my batteries at night with ess scheduled charge levels active…works better now,especially since we have almost no sun outside for days now…
and only when the price is high enough on tibber,i sell to the grid manually…
Ok, so if you are not using DESS, then your simplest way would be to set a highly negative Grid-Setpoint when you want to sell.
i.e. set it to -3000 Watts or whatever your battery / inverter is capable of.
But I don’t understand the relation to tibber prices - I’m not aware of how it works in Netherlands (?) - for us in Germany, purchase prices are in no way related to feed-in prices. (But Germany is an ancient dinosaur when it comes down to dynamic pricing anyway)
as shown in the picture, dess fills up the battery to 100% prefer, keeps it here the whole day…and sells at it’s set time later in the day…
in between those hours there is almost no solar,so the power taken from the grid between those hours is extra cost. it should calculate how much you are gonna use that day and release that amount from the battery,and sell what is left in the battery.
