[ENHANCEMENT]: set smart grid mode depening on epex current price

[Skol6]

Hi,

I do have a floating current tarif model like f.e. Smartcontrol.
This means the price changes every hour from rather cheap to expensive.

There are alreade multiple implementations to receive and calculate the current price based on the EPEX spot market price.
It would be great if your simulation could react on those prices.

f.e. if the price is high - reduce the power of the heatpump
if the price is low - increase the power + produce hot water at this time frame.

Regards.

[edterbak]

Nice suggestion.
I will take it along. Thank you.

[Skol6]

to get the epex spot tariff there are already implementations available f.e. https://github.com/mampfes/ha_epex_spot
Currently I use the item "EPEX Spot Data Rank", where price is already in the right order.

The rest is quite simple:

• 3 cheapest hours: hot water + smartgrid more power (could also be done by manually changing flow temperature)
• 5 cheap hours: only smartgrid more power
• 8 normal hours: normal operation
• 5 high hours: smartgrid mode reduction
• 3 peak hours: smartgrid mode off - no heating

The cheapes hours are mainly in the night, so I am not sure if this is the best time to produce hot water. Midday the COP would be better.
Another method for price estimation could be to perform the calculation on the daily average price.

[emilic14]

I am also interested in this enhancement.

In France, there are several modes of tarifs depending on the time of the day or even on the season.
For example, we have one that is named TEMPO. They firstly divide the energy price in 2, day and night. Secondly they divide the prices in three colors (Blue, white red... go figure) where blue is the cheapest, white is a bit higher, and RED is like dont use energy as its like 3x more expensive.

So at the end we have a total of 6 cost variables.
Blue: Day (cost 1), night (cost 2)
White: Day (cost 3), night (cost 4)
Red : Day (cost 5), night cot 6)

My perfect scenario (as I have solar panels) is to heat my DHW when I am producing more than x (this is already possible, THANK YOU!), else heat up only in the night costs. And explicitly avoid RED days.
And for heating/cooling my house, i would also like to only heat up when I am producing or during the night times when cost is low.
As with the above, avoid RED days !!! (I think this is the smartgrid mode OFF - no heating)

[edterbak]

Hi all.

Yes, I hear you.
In the Netherlands there is also more and more demand for this kind of functions.
For me to build something that would work with all scenarios, all desires is kind of not within my capability.

But... What I have done, and what I will keep on expanding on and improving, is that there are now connectors in the Node Red flow present, which allow you to excert some controle over the logic. You can trigger stuf, enable or disable stuff.

If you have a node red plugin, or a home assistant addon, or anything else that is smart with apex or blue/white/red color codes for you, you can use this to connect to the node red flow.

This way, I dont have to maintain this logic. (I have no skillz in this are anyways 😄 ) And I open the door for every option there might be.

For instance.

• The Room Temperature. You can control the setpoint from external source. use the link-in node on the WP-Input tab.
• Start regular DHW run
• Boost DHW now with higher temps as set in homescreen
• Solar2DHW, you can turn it on or off at your choosen moments.
• Start a sterelization run

Of course, there are other options you might want.
Please inform me about the ones you would like to have exposed from external source
Additionally, I see that the description on the link-in nodes on the WP-Input tabs, are a bit too low in quality and clarity. I will improve on this !

[geduxas]

Also don't leave us behind with nordpool price's :D

[edterbak]

@geduxas I do not understand your reply yet. I just wrote above the approach I have in mind. It does not involve me designing extensive logic.

Instead, other plugins can do this logic stuff. I only expose the important pins for these plugins to be able to control the node red flow.

I have just reworked the WP Input tab and added more pins to it for others to exploit. 😄
See image.

If there are pins missing, please tell me and I will create them of course.

[edterbak]

Is this issue still open or unanswered?
If not, can you please close it ?

Thank you in advance 😄