How to create kpi for improving a manufacturing production line efficiency for one line, then adapting it to the other 30+ production lines
In this case there are typically two reasons why you might want to do this:
1. Monitoring the current performance
2. Improving current performance
If the goal is to monitor then you will need to map your process first. Then it will be clear what can be used as an indicator or the performance (normally number of units passed in a period of time).
The next thing is looking for a possibility to improve. In this case you’ll need to focus on possible bottle necks and analyze what’s slowing your system. There was a good article on the topic.