Local only (non-cloud) home energy monitor options

Hardware
1

I’ve got some Efergy sensors and a hub which work pretty well for monitoring our power usage, but I don’t like that all my data gets pushed to Efergy servers - that sort of data is very sensitive as you can tell when people are home or not etc. Wish I could hack the hub to store locally instead but haven’t seen this done. Wondering if there’s an alternative which would allow integration with Home Assistant and not send anything to the cloud.

Ideally I’d like sensors to monitor certain powerpoint as well as the clamp style for installation in meterbox. Would be nice if it had solar support

2

I use Volkszähler. Its a german project.
All data are stored locally in a mysql database. There is even a component in homeassistant.

1 Like
3

That sounds exactly what I’m after, thanks very much will have a look into that. Are the sensors it works with pretty readily available?

4

I used S0 energy meters, and connected them to a Pi which is running vzlogger (tool that sends the data to volkszähler). On my main power meter I got myself a IR to Serial adapter. Volkszähler is very customizable if you know how to do API calls. You can even measure water, tempertures and others.

5

I have a very homebrew solution.
I use a currentcost clamp (like this one) which sends current usage update every 6 seconds on 433mhz.
I then use a USB-DVB dongle and rtl_433 to receive and decode the 433mhz. I created a hassio addon to send mqtt messages with the usage.
IIRC currentcost also supports per-socket monitor, too but I never used one.

1 Like
6

This looks like a great project to aggregate raw readings etc.
I might investigate adding this software and using nodered to keep it updated from my currentcost

7

I’m using OpenEnergyMonitor
https://openenergymonitor.org/

8

That looks really good. How did you interface it to HA? I don’t see a native HA component for it

9

Yes I just took a look and it looks very nice, but seems to be leaning toward openhab and their own “open source” (Im sure its open, but practically only they sell it) hardware ecosystem.

10

Ah… this:


Just not very well labelled.
1 Like
11

I’m using the emoncms sensor and I do not use the emoncms cloud then I have this config in my configuration.yaml:

sensor:
  - platform: emoncms
    api_key: xxx
    url: http://emonpi.home/emoncms/
    id: 1
    unit_of_measurement: "°C"
    include_only_feed_id:
      - 2
      - 4
      - 21
      - 25
  - platform: emoncms
    api_key: xxx
    url: http://emonpi.home/emoncms/
    id: 2
    unit_of_measurement: "W"
    include_only_feed_id:
      - 1
      - 11
      - 16
      - 19
      - 20
      - 26

OpenEnergyMonitor is also a friend of Node-RED and MQTT then there is a lot of way to add it to your HA.

For the HW yes I bought it to them but if you prefer you can build it yourself.

2 Likes
12

I’ve backed this project - it also uses EmonCMS:

2 Likes