I am happy to inform you of what we added to stable VRM yesterday:
Security enhancements
When you update your account email, we now send a notification to your old email address. This ensures you’re always aware of changes to your account for added security.
When you have not set up 2FA for your VRM account yet, a non-persistent banner will help you find the 2FA configuration fast
We’ve improved the enhanced search modal on the installation overview, ensuring that the input field remains focused while navigating, improving consistency and user flow
GX device replacement dropdown
We’ve adjust the dropdown height to keep the search bar visible at all times, making it easier to find and select devices
In the coming weeks, we are rolling out some very big changes to VRM, so definitely stay tuned
@Barbara Is it possible that you also did something when reading the prices in the DESS? Over the past few days, I’ve had fixed prices appear for one or two hours each day for the following day. I really like the idea; then the system calculates PV under- and over-coverage earlier. Why not just calculate the average prices completely into the future until the actual dynamic prices are read in?
We are doing some tests to see if we can forecast prices. So far the results are not consistent enough for stable VRM, but I am sure we will get it right.
Isn’t there a way to calculate the average price of the last month(s) from within the system itself? That would have to be meaningful and regionally accurate.
Next night and tomorrow, the DESS won’t use its full battery capacity and will still be purchasing from the grid. At least, that’s what it plans to do. I’m not familiar with this type of behavior. This must have something to do with your current tests.
Checked your site, my assumption is that DESS forecasts your consumption to be higher than tomorrow’s solar in the late afternoon, so that’s why it would use the grid for the remaining consumption.
I’m from Germany. It just became clear. No, this afternoon, it was indeed the case that the system wanted to keep the battery at about 50% for two days and then wanted to buy more. For whatever reason, my SOC remained unchanged at 15%. At 4 p.m., it changed. This isn’t meant as a criticism, but rather as a helpful tool for your tests.
Is it possible to get a separate SOC limit for (green) DESS, instead of dynamic using the minimum battery SOC?
Now DESS uses the minimum battery SOC, what results in using grid power in the morning if there is a bit more energy consumed than expected. There is almost no margin for any error in forecast or change in consumption.
Also, is it possible to let DESS discharge to a certain SOC for multiple hours, instead of letting it discharge every hour to a separate SOC?
What now happens is, every hour the system reaches the target SOC for that hour ten minutes before the hour is over.
That results in losing every hour that there are high prices, 10 minutes of discharging and profit.
And, the system doesn’t switch back to normal operation for the rest of that hour, what results in using the grid power for those ten minutes.
It would be great to have it working for some hours to one SOC, and after it reaches that, it returning directly back to normal operation.
I think you’ve gotten too hung up on the idea of a second minimum SoC. Let the guys and girls at Victron do it. It’ll be fine. I’m currently watching the new reactions with great interest.
@Barbara I’ve been observing your new pricing function in VRM for two days now. It looks really, really good regarding DESS. It’s good for the entire system to look a little further into the future. I hope your price forecasts are always somewhat within the range. I fear otherwise, a wave of outrage will break out in the forum. So far, I think it’s absolutely excellent.
For normal DESS, you probably won’t need it. But for green DESS, you want to use as much as possible your own solar energy.
Today, the sun is not giving much energy. What will result in the system getting to the minimum SOC in the evening.
For normal DESS, you just buy more energy at the cheapest moment to compensate for it.
If you could set a minimum SOC for green DESS, it has a minimum it can discharge to, and then you can set your battery minimum SOC a lot lower, so even in some days with low sun, it will not use grid power for way longer.
That was the whole point of green DESS right?
Just wait a bit. I think Victron is currently working on a solution that goes far beyond any SOC limit. This SOC limit alone can lead to too much energy being stored, blocking battery capacity, or missing out on lucrative opportunities for sales. The price forecast option goes much further.
I’ve been observing and following the development of the DESS since October/November 2023. If there’s one thing I’ve learned, it’s that the first logical thought doesn’t always lead to the desired outcome. The entire matter, with two or now three forecasts and constantly changing circumstances, is now much more complex than it appears at first glance.
. Based on past values and weather forecasts. But I think it will get extremely complicated at some point.
