Z-wave electricity clamps for Australia?

Couple of questions re options in Australia for monitoring electricity usage/solar production:

Q1- Anyone in Australia identified if there are any Australian Z-wave electricity monitoring clamps available? (unfortunately the Aeotec Home Energy Meter Gen5 one hasn’t been released/certified for Australia due to low demand) :weary:

Q2 - If no Z-wave options, has anyone got another way to get the data into openHAB?

Background: Electricity consumption and Solar Generation (from solar panels on the roof) would be the two I would monitor. Both to be able to view graphs BUT to also monitor level of Solar Generation to turn on/off discretionary appliances only when there is enough self produced electricity (i.e. save money).

The nano switch monitor usage don’t they? I was under the impression they do. I don’t have any yet.

Why not monitor solar directly from the inverter? It probably has a bluetooth connection or an available ethernet/wlan adapter upgrade depending on the brand.

What solar inverter do you have as some have rs232 which you can use.

@Paso - I’m after a “clamp” that you put in the main/electricity board that monitoring total power consumption from the house

@denominator - I do have the SMA SB4000TL-21 inverter ( [spec](http://files.sma.de/dl/15330/SB5000TL-21-DEN1551-V20web.pdf manual ) that indicates bluetooth! But I’d still need a power clamp system to gather the total house power consumption no? (i.e. so I have both power consumption total + solar generation, which is want I need)

I thought you were looking for individual item monitoring.

You may be able to access your usage via your smart meter.

There is an SMA binding for openhab. It’s on my todo list atm.

thanks for the idea - I’ll check out smart meters in QLD and see if there is a possibility…

still haven’t managed to come across some energy monitoring clamps that would suit Australia then? (i.e. zwave)

I use OpenEnergyMonitor.
I use some of their older emonTX shields to monitor all my circuits and the supply so i can view/monitor the power being imported/exported - works really well and is within 1-2% of what my Solaredge inverter says im importing/exporting.

If I were to buy now, id get the newest wifi based system:

OEM uses MQTT so feeding into OpenHab ( and thus InfluxDB/Grafana is trivial )

@greg - thanks for the pointer - seems to have heaps of clamps/probes. How does it work in terms of implementing this at the OpenHab end? For example if you have OpenHab running on Raspberry Pi, do you need to run OEM somewhere, or do you mean I’d use OpenHab MQTT features to bring in the data via wifi somehow directly? (Sorry new to OpenHab)

The IOTAWATT doesn’t currently support MQTT directly ( but it is being added apparently: https://community.openenergymonitor.org/t/mqtt-for-iotawatt/5834)

So when this is ready, I would think the IOTAWATT will simply publish each clamp/feed to your MQTT broker.

The Openhab just subscribes to these channels to consume the data ( and persist it to influxdb/rrd etc )

Until this is done, or if you use the OEM TX Shields setup, you will need to run a local Emoncms system to get the data and publish it onto MQTT. Emoncms will run on RaspberryPI alongside a MQTT ( Mosquitto) broker and Openhab… in fact the EMONHUB RasperryPi image has Openhab and MQTT installed by default …or did…

I new to openhab also and live in South East Queensland.

You could put a light dependent resistor on meter as it has an led that blinks every kwh. You solar has a rs485 as accessory you can hook into. You could get a SDR and read all the meters in the area. link


Cost bout $180 link

thanks James - because I’ll need total power consumption (as well as solar) I’m trying to find a solution that will solve both ideally…working out how to bring in CurrentCost clamp data seems like it might be my best best, else a solution like Greg above mentioned (I asked him for a bit more info in my reply)

oh…I just noted your “light dependent resistor on meter” might be good for the total power consumption usage too right…I’ll have a look at that…

Yeah LDR depends on your knowledge level of electronics. Just using a clamp meter will give you amps but that is not what we pay for. KWH we pay for.

kWh = Watts / 1000 x time in hours
Watts = Volts X Current

Just use power bill for total and go from there otherwise you will need a sparky to install meter