Currently rewiring some my home's electricity so I can monitor my PV power production locally (without the shitty built in Chinese cloud garbage with hardcoded wifi passwords).

Using the Shelly Pro EM for energy monitoring (it has 2 CT clamps, one is going on the PV output, the other on the grid input).

The data will be collected in Home Assistant on a HA Green device. Additionally, we have "smart" electricity meters here, these have a port which can be used to fine grained power & gas monitoring, should be possible to integrate that into Home Assistant as well.

It's not anything particularly challenging, it's mostly refactoring my electrical distribution board to make room for the Shelly device, routing ethernet cables, and installing some power sockets and a network switch to tie everything together.