Manual input sensor

I have a manual power meter [1] and would like to keep track of the consumption by manually entering the readout from time to time.

Is there any easy way to do this using home assistant?

[1] https://www.vermieter-ratgeber.de/sites/default/files/im_fokus/bild/stromzaehler_fotoliathomas_madel_ivv-ausgabe_12_2016_seite_46.jpg

You could use an input number:

There’s an example here: Component for manual meter readings?

Or publish to an MQTT sensor:

Or use the file sensor.

Thanks, I did not find these using the search!