Hello, I use ESS for my solar power station controlling. It usually works as I would expect. But I found that there is a difference between plan af work and reality. When price of electricity is negative ESS plans to hold my battery low until time of negative price comes. This is correct calculation it allowes to charge my battery when negative price and earn some money. But real behavior of ESS is different. ESS does not low power station production to keep battery empty but it begins to charge it. Result is when time of negative price comes the battery is full. I have seen the same behavior many at least three times. It looks like a ESS bug.
Hi, you type when prices are negative the sytem waits for negative prices. Isn’t that a typo fault? Anyway I don’t understand the situation.
I have the same issue but with an additional problem my sun forecast is much to low.
In the morning the system start immediately charging the battery and at 13:00 the battery is full.
It should start to deliver at the grid . When the prices go negative it should start charging battery.
EC_VictronDESS_Issue.pdf (136,9 KB)
