[Nut-upsdev] Providing Energy Information for UPS units

[dei_sesshoumaru at hotmail.com]

Hi

I am using NUT tools as add-on with my Home Assistant installation to monitor both my UPS systems (APC SMT3000RMI2U and APC SRT5KRMXLI).
The APC units offer a information called “total consumed energy” which which is available under OID  .1.3.6.1.4.1.318.1.1.1.4.3.6.0 (unit is kwhv, value * 100).
I would like to leverage this information to perform some basic metering, checking how much energy the devices behind the UPS are using.
My initial question is on Git: https://github.com/networkupstools/nut/issues/1428

As suggested by jimklimov I checked docs/nut-names.txt but found nothing for the above OID or for energy in general.
Hence I would like to propose to add the following information to NUT for extraction:
==> | output.energy.totalused | Nominal value of totally used energy (kwh) (for APC e.g. 49050 {=490.50kwh})

Question would be if other devices also have such information or if there is general concept name for this.
Maybe it makes sense to have a own category energy if there is more information provided. I can only check my APC systems, but maybe others can check theirs or already know that there is a general concept or more information.

I would hope that once NUT provides this valuable information, also the HA integration will fetch it and provide a sensor which then can be used for all kinds of automations, graphs and statistics. Not that an UPS is a power metering devcie, but I would love to leverage this information.

Best Regards
Sess
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