Whoops - some how deleted this from a couple of weeks ago, reposting now!
It’s the usual story, you start playing with something and fall down a rabbit hole of research / tweaking / etc :)
We have attached to our Smart Electricity Meter a “PowerPal” which helps us track our power usage, and turns out there is a way to get that info into Home Assistant!
Here is an excellent write-up that goes into all the details:
I have ordered an M5Stack Atom Lite, and will set this up once it arrives :)
Currently listening: Ann Peebles - “I Can’t Stand the Rain”