[bombcar]

Probably too expensive to replace the meters (only very old meters actually run backwards).

And 600w is probably below the average usage anyway.

[ragebol]

Sounds reasonable. Here in NL, everyone must get a new smart meter that has a separate counter for delivering back to the grid. IIRC, the grid company replaced it free of cost, if done before some date.

The old ones (Ferraris meter?) just ran backwards, which is attractive of course. Our new meter has a P1 port which can integrate into eg. Home Assistant