Earlier quoted context omitted.
This applies to Finland and Sweden too, perhaps others to follow.
Same principle in Norway, though it uses HAN instead of P1.
They call it HAN here in Finland too, but it's the same interface as the Netherlands one.
Monitoring energy usage with smart plugs, Prometheus and Grafana
141–150 of 190 posts
Re: Monitoring energy usage with smart plugs, Prometheus and Grafana
#142Re: Monitoring energy usage with smart plugs, Prometheus and Grafana
#143Surprised there’s not more mention of Shelly monitors in these comments. They’re great for whole house (service entrance) and circuit power monitoring. Pretty open integration, OOTB integration with HA. I think it makes more sense to use “dumb” OTS circuit breakers in your house and augment with add-on monitor than combining the capabilities into a tightly-coupled single device.
I use a dozen of their relays and I am happy with it; for power metering they don't have a great solution, the 3 phase clamp is very expensive and there is no option for more, like Emporia Vue with 8 or 16 sensors. So yes, Shelly is worth mentioning, but not for fine grained power metering.
Re: Monitoring energy usage with smart plugs, Prometheus and Grafana
#144I got a Zigbee power breaker and hooked it up so all my flat's power goes through it, and then made an e-ink display to show my power consumption: https://www.stavros.io/posts/making-the-timeframe/
For people in The Netherlands: all Smart Meters that the net maintainers installed (are required to) support the P1 standard, which provides a standardized interface for customers to read out current current draw, cumulative power use, etc. Usually gas is hooked as well. You can hook up a cheap dongle to expose the stats in an app. For instance, we use: https://www.homewizard.com/nl/shop/wi-fi-p1-meter/ This meter al…
Do you know of an equivalent for the optical ports that speak DLMS/COSEM? The P1 standard doesn't seem to have caught on here in Spain just yet.
Re: Monitoring energy usage with smart plugs, Prometheus and Grafana
#145I got a Zigbee power breaker and hooked it up so all my flat's power goes through it, and then made an e-ink display to show my power consumption: https://www.stavros.io/posts/making-the-timeframe/
For people in The Netherlands: all Smart Meters that the net maintainers installed (are required to) support the P1 standard, which provides a standardized interface for customers to read out current current draw, cumulative power use, etc. Usually gas is hooked as well. You can hook up a cheap dongle to expose the stats in an app. For instance, we use: https://www.homewizard.com/nl/shop/wi-fi-p1-meter/ This meter al…
It seems that nl ppl always live 20 years into the future.
Re: Monitoring energy usage with smart plugs, Prometheus and Grafana
#146Guys what are your favourite smart plug? I need one with easy integration with grafana, not sucking, and shipment to EU country?
I use Gosund SP112. Available at Amazon, ~12€ / plug. Flashable with Tasmota or ESPHome (I use the later). It can switch the mains as well as one USB-A power outlet.
You need to open it to flash it the 1st time.
There's at least one unused accessible GPIO. On one I soldered an DS18x20 temperature sensor. Now it controls the heating in my shed based on the measured temperature stay above zero degrees in the winter.
Re: Monitoring energy usage with smart plugs, Prometheus and Grafana
#147Missing from the blog. The power reading of the Tosmota device should be calibrated: https://tasmota.github.io/docs/Power-Monitoring-Calibration/
The manufacture of the device he bought sells it with tasmota pre-installed and explicitly states "no calibration needed".
Re: Monitoring energy usage with smart plugs, Prometheus and Grafana
#148You need to be careful with what plugs you choose, though, because they each have, let's say, their own peculiarities. For instance, their overvoltage protection might not align well with what the local regulations say. For example, in my region of EU, the upper voltage tolerances are such that 264V must trigger an instant poweroff, and also anything producing power must shut off if the average voltage over the last…
Shelly relays can be configured to do all these things and the voltage safety threshold itself is also configurable (at least in the Plus devices) but they aren't zigbee. Otherwise great little devices.
Cannot find in-wall options much.
Re: Monitoring energy usage with smart plugs, Prometheus and Grafana
#149Earlier quoted context omitted.
There are 2 ways to design these. They could use a regular relay, or they could use a solid state relay. Solid state relays have widespread fraud. Like 60% of the ones on amazon will catch fire or fail before they hit the rated current. Trade suppliers generally don't sell them at >30 amps. Regular relays up to 10 amps are cheap and reliable. Beyond that, they get expensive surprisingly fast, and the reliability is h…
Is it the switching that kills the relay or is it enough to start/stop the load? E.g. if I have a 10A smart plug monitoring power on a small waist-tall freezer in the garage will it eventually damage the switching function?
Its generally the switching, although I wouldn't professionally sign off an undersized relay on the basis of 'it never switches, so its fine'.
The switching under load causes the contacts to get worn, then the large load causes the now-worn contacts to get hot, and the plastic supports melt and catch fire.
Re: Monitoring energy usage with smart plugs, Prometheus and Grafana
#150I got a Zigbee power breaker and hooked it up so all my flat's power goes through it, and then made an e-ink display to show my power consumption: https://www.stavros.io/posts/making-the-timeframe/
For people in The Netherlands: all Smart Meters that the net maintainers installed (are required to) support the P1 standard, which provides a standardized interface for customers to read out current current draw, cumulative power use, etc. Usually gas is hooked as well. You can hook up a cheap dongle to expose the stats in an app. For instance, we use: https://www.homewizard.com/nl/shop/wi-fi-p1-meter/ This meter al…
> all Smart Meters that the net maintainers installed (are required to) support the P1 standard
Does that support monitoring each power circuit separately?