SMA Home Manager - How to display current consumption

RangerDjanger · February 20, 2025, 3:59am

Hello,

I have integrated SMA Solar with Home Manager into my HA. All is working fine - except the one thing I cant get it to display is my home’s current consumption.

In the Sunny Portal - it shows a total consumption value… e.g. 2.65kW that I cannot find an entity showing in HA integration.

Has anyone solved this? Is it a derived sensor with a formular?

tom_l · February 20, 2025, 4:44am

Looks like you also have an SMA power meter.

The inverter does not supply the grid/house consumption and you need this extra device to get this info.

You can add this device to HA too. Though personally I found it to be very inaccurate.

swante · February 20, 2025, 6:18am

You have to calculate your own household consumption from the feed-in/grid purchase and production.

see

github.com/littleyoda/ha-pysmaplus

docs/faq.md

2d846f600

# Supported Devices

see [Supported Devices Page](supported_devices.md)

# How can I change the refresh rate?

By default, the values are retrieved every 5 seconds. This time can be reduced to one second.

However, the HA developers warn against low refresh rates, as they can overload older or slower systems. The update speed should only be reduced gradually and carefully.

# Speedwire (Inverter and battery storage)
SMA does not provide any freely available documentation for speedwire in connection with inverters and battery storage. Therefore, the entire implementation has been created by reverse engineering and cannot cover all cases.

see [Known Speedwire Problems](speedwire.md)


# How can create dashboard?
see [Dashboard Page](dashboard.md)

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tom_l · February 20, 2025, 6:38am

That is not available without an SMA power meter. They obviously have one since the values are available in Sunny Portal. The meter just needs to be added to HA.

swante · February 20, 2025, 7:08am

I’m the author of a SMA-Integration

I never(!) saw a sensor for household consumption.

The SHM2 doesn’t provide the information either. As far as I know, SMA also calculates the value for their portal.

But I’d be happy to be proven wrong by a screenshot or simlar.

tom_l · February 20, 2025, 7:09am

Yeah that has to be calculated from the others.

But you can’t get grid import/export from the inverter. You need the meter. That is the missing piece provided by the meter.

swante · February 20, 2025, 7:23am

Some inverters mirror the values of the SHM2.
And since it has ‘metering’ entries on the screenshot, I strongly assume that its inverter provides the values of the SHM2.
But you can’t say that for sure because the names are cut off

But you’re right. If the inverter does not provide the values, it is necessary to integrate the SHM2.