Even though I’m on the other side of the world in New Zealand, the structure of my electricity charges is quite similar to @Krivatri in Flanders. There are 4 components to our monthly bill:
- Daily charge 68c whether we use any electricity or not
- 34c per kWh on main meter (available 24/7)
- 27c per kWh on ripple-controlled meter (almost always available except for short periods on the coldest winter days (22 hours minimum per day)
- -17c per kWh for any power exported to the grid (net metering is not allowed in NZ)
So for me, it makes no difference when I use the energy unless it’s on a very few days per year in the middle of winter. All the energy in our House Battery is used every night, so anything taken from it needs to be replaced @ 34c per kWh. Therefore, it never makes any sense for me to use House Battery energy to charge my EV. Much better to wait until the sun is shining (if possible), or if I can’t wait that long, use grid energy at night through the ripple-controlled meter.
My point being that each of us have different use cases and I love the flexibility afforded by HA where we can so easily tailor our controls to match our individual circumstances. I don’t use any HA automations at all, just a couple of templates. All my programming is done in Node-RED which is a visual programming environment I find very intuitive and easy to maintain.