Add in battery

[danjenkins]

If we have battery in/out figures could this component be updated to include battery too?

Like the tesla one

[gurbyz]

Thank you for this feature request. It has been asked before also. Not that I will process this immediately, but if you can share (Q1) an example of the extra sensor data (e.g. is it 1 or 2 sensors c.q. what does a positive value mean) that would be helpful for implementing (some time in feature, maybe, no promises ;-) ).

And I don't own a battery myself, so it would be interesting to know (Q2) if people could have 'other lines in the diagram' as well. I'd rather hope not (because I like the simplicity of your diagram) but I can image people saying 'my setup requires a line drawn from solar to battery directly'.

What if the battery doesn't have power anymore to support the house? (Q3) Will there be a line between grid and house directly? Or could it be that for some setups there will be a line between grid and battery?

Questions, questions, maybe I should get a battery first. Haha. :-D

[danjenkins]

Good questions! Let me have a think but more than happy to send you data etc :) I'll have a think about the other questions!

[schwarzenbergf]

Good job, Gerben! I like your way to keep it simple.
Anyhow, a battery is really required in this scenario (and will be more and more in the future).
Because in future the main goal (in my opinion) will be optimizing of self-consumption (and not 'feed-in'). Increasing self-consumption works only with batteries.
So, in my setup (with 28 kWh batteries) I'm stand-alone (no grid consumption) for 9 month a year (in Germany).
And I would be glad if I could use your great card.
So, in addition to the existing flows I would see the following with a battery included (Q2):

• PV --> Battery
• Battery --> House
  In very rare cases this one is at least possible (but not relevant):
• Grid --> Battery (charging the battery from grid, battery maintenance f.i.)
  That's all (I guess).
  Q1: there is one additional sensor (battery power: + means to battery (charging), - means from battery (discharging)
  Q2: see above
  Q3: not enough bat power: flow can be from grid , PV and/or bat to house.

Let me know if I can be of help.

[gurbyz]

Thanks for your thoughts and answers about adding a battery to the card.

I'm not sure if just one extra battery sensor will give enough information to display all 3 extra lines. If I would make an early version of the card that supports a battery I would start with only House --> Battery and Battery --> House. That suits the most to the physical sensor setup. A then use that as a starting point to improve it further.

Q4: Do you also have a sensor (apart from the one in kW) that measures energy (in kWh) for charging/discharging the battery? Because those kind of sensor(s) would be needed for the 'energy view' of the card.

[danjenkins]

Sorry for not getting back to you on the above a while back!

on Q4 - Yes and no - the tesla local api gives you a % full. However if you know that each powerwall is 13.5kwh of storage you could work it out and put that into another templated sensor.

[schwarzenbergf]

House --> Battery and Battery --> House would be completely OK.
I think for this card we don't need more.
Q4: At the moment there is no such sensor for the battery (kWh). Could be done in Home Assistant (Template Sensor) or, as @danjenkins proposed, using the SoC (State of Charge), which is available.
Just show the battery power and the SoC with the bat icon. At the energy view showing SoC instead of kWh would be OK for me.
Thank you!

[gurbyz]

On the dev branch is version 0.0.16-dev which has some very basic support for a battery now. You have to install it manually from GitHub. Please, switch on the debug: true parameter of the card to be able to check if you installed the dev version correctly and that you are not fooled by a cached version in your browser.

See here for troubleshooting: https://github.com/gurbyz/power-wheel-card/wiki

0.0.16-dev

New features

• BETA. Basic support for a battery in the power view.
  • New card parameter battery_power_entity.
  • New card parameter battery_icon.

As said, it's very basic and it only has an extra line between Home and Battery. The nett value of the Battery is added to the Home value. So if you are discharging the battery with 50W, your Home will get 50W added to its value. And vice versa.

I hope you get it running and can give some feedback. What will help is to have two power-wheel-cards setup, one with and one without the battery sensor added to its setup. Then you are able to see the differences in values.

[gurbyz]

494d74c

[danjenkins]

Thats some quick work! Thanks @gurbyz ! I'll try and get this setup sometime this week - my Home Assistant Lovelace interface needs some serious love!

[schwarzenbergf]

That's great, thanks! I'll report to you soon.

[schwarzenbergf]

Hi Gerben,
I started with the test. Looks already good. Here is what I see when the House is driven by PV AND Battery:

When PV drives House AND charges the Battery it looks like this (charging through the House):

May be in my case (with battery and NO feed-in to the grid) it would be better to change the places of Grid and Battery (maybe with an option 'feed-in = false').
I will still have to think about this.

Some calculated values at the arrows are missing.
And finally it would be great to have the SoC value of the battery shown at the battery icon, because this is in this scenario always an important information.

Again, thank you very much for your efforts. I'm not in a hurry with this, so please do not feel pushed by me.

My setup is as follows:

          - type: custom:power-wheel-card
            solar_power_entity: sensor.pv
            grid_power_entity: sensor.grid
            battery_power_entity: sensor.bat
            production_is_positive: false
            title: Solar Wheel
            title_power: Power Flow
            debug: true

[gurbyz]

Thx for your answer. Especially for the no-hurry part. Time is always a problem here. ;-)

Maybe place the Battery in the top-right corner? Then I can get rid of the 'charging through the house' situation. Like this:

House is driven by PV AND Battery

PV drives House AND charges the Battery

(Extra advantage: the card size stays the same for battery users and non battery users. And for battery users that also use the energy view and/or money view, there is also no switching of card sizes and thus no rearranging of all the other cards when switching views.)

I'm not owning a battery, so here's Question5:
Q5: Can I do the assumption that (for your setup) the battery is never being charged when there is no sun? So the grid never charges the battery? And (difficult to answer) will that be the case for everyone with a battery at house?

By the way, arrow values are hidden when they are equal to one of the surrounding icon values. Otherwise you would see a lot of identical (and redundant) values in the card.

[danjenkins]

With my battery I can charge it from the grid

…

On Thu, 19 Sep 2019, 19:15 Gerben ten Hove, ***@***.***> wrote: Thx for your answer. Especially for the no-hurry part. Time is always a problem here. ;-) Maybe place the Battery in the top-right corner? Then I can get rid of the 'charging through the house' situation. Like this: House is driven by PV AND Battery [image: House is driven by PV AND Battery] <https://user-images.githubusercontent.com/3920372/65268417-64009000-db17-11e9-9de5-86fd0a0d18ba.jpg> PV drives House AND charges the Battery [image: PV drives House AND charges the Battery] <https://user-images.githubusercontent.com/3920372/65268443-724eac00-db17-11e9-81fd-19b21ba12b8b.jpg> (Extra advantage: the card size stays the same for battery users and non battery users. And for battery users that also use the *energy view* and/or *money view*, there is also no switching of card sizes and thus no rearranging of all the other cards when switching views.) I'm not owning a battery, so here's Question5: Q5: Can I do the assumption that (for your setup) the battery is never being charged when there is no sun? So the grid never charges the battery? And (difficult to answer) will that be the case for everyone with a battery at house? By the way, arrow values are hidden when they are equal to one of the surrounding icon values. Otherwise you would see a lot of identical (and redundant) values in the card. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#23?email_source=notifications&email_token=AAB3LLNATL2W7IWWHF3QXKTQKO6U7A5CNFSM4H35YYFKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7ELT6Q#issuecomment-533248506>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAB3LLL7BX4SQLEGFHQVLYTQKO6U7ANCNFSM4H35YYFA> .

[gurbyz]

Oow. That's a pity (for me and my proposal). Or is that an exceptional or rare situation? Do you find your setup in this situation often? (I can imagine that it's better to charge your battery with solar power than with grid power, because when the battery is full the unused solar power will flow back to the grid (often against a lower tariff)).

Can you share a picture like the one in your starting post of this charging-from-the-grid situation? And maybe also one where you battery is charging-from-the-sun?