Also Home Assistant [0] with SlimmeLezer [1, or is this a Dutch thing?] and Shelly Plug S [2]? :)

All that stuff gives one great insights into what a kWh is (how much energy), where you use the most energy etc. I love it.

[0]: https://www.home-assistant.io/blog/2021/08/04/home-energy-ma...

[1]: https://www.zuidwijk.com/product/slimmelezer/

[2]: https://shelly.cloud/products/shelly-plug-s-smart-home-autom...