[jwr]

Is this really Dutch-specific, or is there a chance other modern smart meters in other EU countries might use the same protocols?

[robinvdvleuten]

There are some other countries using this format as well. I know at least Belgium, Luxembourg, Ireland, Spain, Germany, Denmark, Sweden, Finland, and Hungary, though compatibility can vary.

[stragies]

Also Belgium, Luxembourg and Sweden according to https://www.home-assistant.io/integrations/dsmr/