I have tried freecad a number of times to replace solidworks as a critical piece of closed source software in hardware development toolchains. I have always struggled. Yesterday someone spent an hour with me at a makespace saying… “FreeCAD has a different way of doing this/try realthunder branch/use symmetry condition/delete all conditions that coincide” … it has been worth years of trying alone. When I started solidworks the reseller gave me a week of training - this is often why complex FOSS software gets a reputation for being clunky, because alone you will spend ages hunting a GUI button in a complex interface.

TLDR: Go outside, go to makespace or a FREECAD conference - meet other people who use open source software - its much easier to use/learn from others than alone.

Negative energy prices are a bad thing! That means that someone is dumping energy into the grid (you should be paying the grid if you have solar panels!!) In the UK all renewable energy had to be called ‘experimental’ so that the pricing was fixed and the government picks up the tab - that’s not good. Check this map - right now the wind isn’t blowing and solar hasn’t got out of bed - so most of the countries using renewables are looking shit - later today solar will kick in, but tonight it will be bad again. That isn’t a solution.