We also fixed most of the crashes on the electricity matter. However, in existing universes or in case you have any problem, use the /sanitize command.
We also understood you: here are the new cables colors!
Story saves from the EA2 are not compatible anymore. Only saves in creative or custom mode are working.
We created a saves file called "StellarOverloadEA3".
You will need to manually move your EA2 saves in this new file.
Old EA2 file: %APPDATA%\..\Local\StellarOverloadEA2\Saved\Saves\Universes
New EA3 file: %APPDATA%\..\Local\StellarOverloadEA3\Saved\Saves\Universes
In creative mode, you can teleport yourself with those shortcuts: CTRL+0, CTRL+1,... CTRL+9 to go on different planets.
Find all the detail in the release note here.