Anyone experience with connecting a Growatt solar-inverter?

[hmadsen]

Hi

I tried inputting the suggested sensors into the solar panel part and this is what i get out

1.6 at the top, is “Total daily production” (Yes i know, its abysmal, but this is what i get in winter sadly )

Left is grid, and the 0 is offcourse what i have sold, and the 11.5 is what i have bought (13,6 minus 1,6 minus 0,5)

And at the bottom it shows that i have charged 0 kwh to the battery, and discharged 0,5 for some reason.

So it seems that the numbers are fairly reasonable, it’s just the labels that are (atleast for me) a bit confusing.

Does this look about right ? (Apart from the very small production volume on 20 pcs 350wh solar panels, that is allright, when i am in northern europe, where the sun sits very low and december 21, is the shortest daylight of the year…Least produced in a day was 0,1 Kwh ).

[mjdyson (Mark)]

Looks reasonable to me!

It would be worth cross checking your import values on a smart meter if you have one. And maybe in the Shine app, if you have that too. Otherwise looks good to me.

You’ve had more solar than the UK today

[hmadsen]

I have the Shine app, right now it says imported from grid 12,9Kwh while the figure on the HA energy says 14,5 right now, but i dont know if this might because the HA does not update the numbers as often, i do know that the wife is running the oven and stove right now, and Shine app says that we are drawing 2,93Kwh right now.

The Solar setup came with a “smart meter” i think this is the one that actually reports the in and out figures.

This device is set in series with the power cables that run to the normal smart meter that the electric company installed, to know my consumption.

It is called eastron SDM630-Modbus V3 and on the display right now it says 0016 (probably the 1.6Kwh produced) and 02,52 which is probably the instant draw right now.

Do we know if growatt has any provisions for telling it to not use the battery ?

I know this gets a bit nerdy…Imagine at a given day i produce 10 Kwh and i use 20 Kwh

Well the price for a Kwh is not always the same.

As it is now, as soon as i make any power, it will use that to minimize what i buy.

But the most expensive prices of the day right now is at 5-7 PM because this is when everyone runs their stoves, ovens and so on.

So why use the power i generate at 10 AM, and pay, lets say X amount of money for, when i could save it until 5-7PM where the price is (X*1,5)

Would offcourse require that it knew when the price was high and low, but atleast the electric company i buy and sell electricity to and from, have a chart for the prices next day, the day in advance so i know at 9 PM, when the prices will be highest and lowest so if this got integrated into HA and HA could control if we charge the battery or we discharge the battery, this would be ideal, price wise.

[hmadsen]

For future reference, this is the sensors i have chosen, according to HA

Do we know how often HA updates the figures, it has not changed in the last 15 minutes atleast… ?

[hmadsen]

@Ewert_Snyman

Anybody else experiencing problems with the HA just stops reading the Growatt data from the server? Reloading the integration seems to resolve the problem, but after a few minutes it stop reading the data again.

It seems that i might also have this problem, mine has read 14.5 Kwh for atleast 30 minutes now and it has not updated even though the shine app figures has… It has updated atleast once after i put the sensors in, because just when i started the number was lower, but now it seems to not update.

Maybe it stops when accessing the Shine app ?

[mjdyson (Mark)]

There is a similar tariff in the UK called “Octopus Agile” and I believe there have been integrations / ways of dealing with those types of tariff. I dont know if there’s an integration for your supplier, but have a read here – Octopus Energy Agile Tariff - Third party integrations - Home Assistant Community (home-assistant.io)

As for your Growatt system using the grid or batteries at certain times of the day. I dont believe the HA integration currently has this level of control. I’d like it to so we can prevent an EV from draining your house batteries when it’s on charge. It would probably need a big disclaimer along with it too!! I’ve seen a glimmer of hope on this front, but nothing is published.

[mjdyson (Mark)]

do you have an entity called “last_data_update”? it might show how often the data updates?

[hmadsen]

@mjdyson

There is a similar tariff in the UK called “Octopus Agile” and I believe there have been integrations / ways of dealing with those types of tariff. I dont know if there’s an integration for your supplier, but have a read here – Octopus Energy Agile Tariff - Third party integrations - Home Assistant Community (home-assistant.io)

As for your Growatt system using the grid or batteries at certain times of the day. I dont believe the HA integration currently has this level of control. I’d like it to so we can prevent an EV from draining your house batteries when it’s on charge. It would probably need a big disclaimer along with it too!! I’ve seen a glimmer of hope on this front, but nothing is published.

Well there are actually someone that has succeded in putting the prices into HA, we use something called NordPool, but they are manually adding stuff, editing files and so on, and i have to say that i am nowhere near that level of tech-fu so i am not able to implement it like they do. Also i think they mainly use it for pulling the data and showing it in HA, not for actual integration with anything.

I do know that HA integration is not at that level but i wonder if there are even functions in the Growatt system to be able to send a command “Solar power only to charge battery bank until it is full, and the house uses only power from grid, as it is cheap”

or

“right now we need to use battery power, because the price from the grid is high”

If the inverter does not support this level of external control, it will not be possible to do any IFTTT stuff on it, even if we have the sensors for electricity price and so on.

I agree with the Car charging off of the battery. Would be nice to be able to tell the car charger that it can only charge with as much Kwh that is surplus from the panels, that would otherwise be sold.

In my country i have to pay an average of 6 times what i get for a kwh.

So basically i have to sell 6 kwh to the grid, to afford to buy 1 kwh. This is because approx 5/6 of the price of a Kwh is actually taxes (A little less, because the operator needs a difference in the raw buy and sell price, to be able to make money).

I do have a sensor like this

OOCMA40002 Last Data Update

But it seems the value is always “In one hour”

So maybe what is really means is that it will only update once per hour ?

[Ewert_Snyman]

Please share your Energy configuration so that I can compare. Thank you.

[hmadsen]

Look above, i have posted a picture with what sensors i use for each point needed.

Post is about 6-7 posts above this one

[Ewert_Snyman]

Sorry, that is basically what mine looks like, but my home power consumption does not take the direct solar power use into consideration.

[hmadsen]

I dont know if implementation is different, but basically i dont actually use any of my solar power, per say.

Mine is set up, so that the power meter measures how much power i draw on each of the 3 phases, and then it relays this information to the Growatt inverter, and it will then send back the same amount of power, but only on one phase.

So basically i do not per say, use any solar power directly. I also do not have anything connected to the EPS connector.

[ironhead]

I have a Growatt MOD 7000TL3-X inverter with ShineRFStick-X and a 3-phase Growatt Smart Meter (actually Eastron SDM630-MODBUS V3). The meter is connected to the Growatt Raillog.
ShineRFStick-X and Growatt Raillog send data to Growatt ShineLanBox which is connected to the local network and the Internet.

Everything connected as in the attached photo.

Is it possible to observe solar energy production, import from the grid and export to the grid with such devices?

Tried with core integration but only inverter data is displayed.
Everything is visible in the ShinePhone app.

[Bernard-Jan (Bernard-Jan Baerken)]

I also was having the issue that the unit total (CHxxxx Lifetime energy output) was set to 0 every day.
Now I use the Total (address Total Lifetime enery output) and it work great.
But I consider myself lucky because this is still a bug for the people that have more then one unit and want to see how each unit work.

[hmadsen]

Would be REAL nice to get further integration, where if possible, HA could command the Growatt inverter to charge the battery for example.

If you look at this graph of the electricity price for tomorrow, it would have been really nice if i was able to charge the battery from 04:00 until 06:00 and then put that electricity back into the grid from 17:00 forward.

This is when the electricity is most expensive and this is the time where we run our oven and/or stove to make dinner, so we use “a lot” of electricity at that time.

I know the “price” shown here, only makes sense to me, but i can tell you that if i was able to charge the battery i have with about 6 KWh of energy between 04.00 and 06.00 and then use it between 17-19 i would be able to save what is equivalent to 5 dollars…In one day.

Would not even matter if there was a loss of 10% due to converting it to battery power and back to AC, it would still be a massive saving.

[cspiby]

Anyone had problems this week with data appearing on growatt’s website?

[KasperEdw (Kasper Edwards)]

I agree. Being able to control when to charge from the grid when prices are low would be really nice.

It can be controlled from the shinephone app, but its really cumbersome.

@hmadsen : are the shown graph from HA, and if so, what integration are you using?

[hmadsen]

@KasperEdw

Yes they are from HA, it is integrated from Nordpool, that is the “Electric exchange” my power supplier is buying the electricity that they sell me from.

Look at this thread, this is where i found the scripts for this integration.

You will need to install “hacks” for the nordpool integration, and Apex chart cards (All is mentioned in the other thread).

Any good ideas are welcome. Nordpool Energy Price per hour

In Nordics the energy-price is set on a stock market the day before. The price is set per hour and are published on multiple places. Example: https://www.nordpoolgroup.com/Market-data1/#/nordic/table Nordpool themselves also have a API for fetching and trading (I assume they don’t give out login to everyone) So aim trying to come up with a way to update a sensor with the values from the price. So the sensor displays the current price but also holds history so price for both history hour…

[bekselmans]

I have a growatt inverter and home battery. I can connect with home assistant, solar production sensor data is shown, but I don’t have any data for my battery.

Data from the dashboard at https://server.growatt.com :

I have 27 entities in ha for the girowatt integration, but no entities for the battery.
Is there a way to fix this?

[bobf41]

I just filed an issue in Growatt_server integration and now found this topic.
I am having the same issue with the Growatt 2500-S not showing the right values and not able to select the right sensor in Energy.
When I add state_class: total_increasing in the YAML for sensor Plat Dak Energy today I can select it in Energy config but throws an error:
statistics_not_defined
sensor.plat_dak_energy_today